[coreboot-gerrit] Change in coreboot[master]: devicetree: Add accessors for chip_info

[Kyösti Mälkki (Code Review)]

Kyösti Mälkki has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/34298 )

Change subject: devicetree: Add accessors for chip_info
......................................................................

devicetree: Add accessors for chip_info

Apply uniform style of error messages for missing device
nodes and chip_info.

Change-Id: I70def4599509b8193e44ea3f02c4906f865b4469
Signed-off-by: Kyösti Mälkki 
---
M src/device/device_const.c
M src/include/device/device.h
2 files changed, 31 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/98/34298/1

diff --git a/src/device/device_const.c b/src/device/device_const.c
index e9cf5eb..ba12249 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -244,6 +244,33 @@
    return dev_find_slot(0, devfn);
 }

+DEVTREE_CONST void *config_of(DEVTREE_CONST struct device *dev)
+{
+	if (dev && dev->chip_info)
+		return dev->chip_info;
+
+	printk(BIOS_ERR, "BUG: %s has no chip_info\n", dev_path(dev));
+	return NULL;
+}
+
+DEVTREE_CONST void *config_of_path(pci_devfn_t devfn)
+{
+	DEVTREE_CONST struct device *dev = pcidev_path_on_root(devfn);
+	if (dev)
+		return config_of(dev);
+
+	dev = dev_find_slot(0, devfn);
+	if (dev) {
+		printk(BIOS_ERR, "BUG: config of hidden 00:%02x.%u requested\n",
+		       devfn >> 3, devfn & 7);
+		return config_of(dev);
+	}
+
+	printk(BIOS_ERR, "BUG: config of missing 00:%02x.%u requested\n",
+	       devfn >> 3, devfn & 7);
+	return NULL;
+}
+
 /**
  * Given an SMBus bus and a device number, find the device structure.
  *
diff --git a/src/include/device/device.h b/src/include/device/device.h
index 24b6421..f8485a3 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -294,6 +294,10 @@
 DEVTREE_CONST struct device *dev_find_slot(unsigned int bus, unsigned int devfn);
 DEVTREE_CONST struct device *pcidev_path_on_root_debug(pci_devfn_t devfn, const char *func);

+/* Safely discover chip_info. */
+DEVTREE_CONST void *config_of(DEVTREE_CONST struct device *dev);
+DEVTREE_CONST void *config_of_path(pci_devfn_t devfn);
+
 void scan_smbus(struct device *bus);
 void scan_generic_bus(struct device *bus);
 void scan_static_bus(struct device *bus);