New patch to review for coreboot: af21eb3 device_romstage: Add a way to move to the next device

[Martin Roth]

Martin Roth ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5732

-gerrit

commit af21eb3e3767816c6ef03331938c8f3522e052fc
Author: Martin Roth 
Date:   Mon May 12 17:38:59 2014 -0600

device_romstage: Add a way to move to the next device

When trying to loop through all the devices in romstage, there was
    no function to just go from one to the next.

This gives an easy way to go all the way down the chain of devices.

Change-Id: Id205b24610d75de060b0d48fa283a2ab92d1df0a
    Signed-off-by: Martin Roth 
---
 src/device/device_romstage.c | 22 ++++++++++++++++++++++
 src/include/device/device.h  |  2 ++
 2 files changed, 24 insertions(+)

diff --git a/src/device/device_romstage.c b/src/device/device_romstage.c
index 591cf88..d37dd8e 100644
--- a/src/device/device_romstage.c
+++ b/src/device/device_romstage.c
@@ -55,6 +55,28 @@ ROMSTAGE_CONST struct device *dev_find_slot(unsigned int bus,
 }

/**
+ * Given a device pointer, find the next pci device.
+ *
+ * @param previous_dev A pointer to a PCI device structure.
+ * @return Pointer to the next device structure (if found), 0 otherwise.
+ */
+ROMSTAGE_CONST struct device *dev_find_next_device(
+		ROMSTAGE_CONST struct device *previous_dev)
+{
+	ROMSTAGE_CONST struct device *dev, *result;
+
+	result = 0;
+
+	for (dev = previous_dev->next; dev; dev = dev->next) {
+		if (dev->path.type == DEVICE_PATH_PCI) {
+			result = dev;
+			break;
+		}
+	}
+	return result;
+}
+
+/**
  * Given an SMBus bus and a device number, find the device structure.
  *
  * @param bus The bus number.
diff --git a/src/include/device/device.h b/src/include/device/device.h
index dfebeaa..90fcc7c 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -238,6 +238,8 @@ u32 find_pci_tolm(struct bus *bus);

ROMSTAGE_CONST struct device * dev_find_slot (unsigned int bus,
    					unsigned int devfn);
+ROMSTAGE_CONST struct device *dev_find_next_device(
+						ROMSTAGE_CONST struct device *previous_dev);
 ROMSTAGE_CONST struct device * dev_find_slot_on_smbus (unsigned int bus,
    						unsigned int addr);