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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-07-12 15:26:29 +0300
committerPhilipp Deppenwiese <zaolin.daisuki@gmail.com>2019-07-17 14:27:16 +0000
commitf2ac0137566076262152f74b6b6761c9f6f2def2 (patch)
treee082ebf2811068a3ec5c9da99968e8aba39fad25 /src
parented52e3dd9c33e5f714bde615e16c1b187cdd269f (diff)
soc/intel: Fix regression with hidden PCI devices
Fix regression with commit 903b40a soc/intel: Replace uses of dev_find_slot() Platforms where FSP hides PCI devices before enumeration may halt with error message 'PCI: dev is NULL!'. The workaround here is to print an error message revealing the faulty source code function and revert to old behaviour of dev_find_slot(). Change-Id: I5eab3e7f1993b686103eaa257aacda379dc259fa Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/34285 Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: Maxim Polyakov <max.senia.poliak@gmail.com> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Christian Walter <christian.walter@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
-rw-r--r--src/device/device_const.c12
-rw-r--r--src/include/device/device.h6
-rw-r--r--src/soc/intel/apollolake/include/soc/pci_devs.h4
-rw-r--r--src/soc/intel/broadwell/include/soc/pci_devs.h4
-rw-r--r--src/soc/intel/cannonlake/include/soc/pci_devs.h4
-rw-r--r--src/soc/intel/denverton_ns/include/soc/pci_devs.h4
-rw-r--r--src/soc/intel/icelake/include/soc/pci_devs.h4
-rw-r--r--src/soc/intel/skylake/include/soc/pci_devs.h6
8 files changed, 29 insertions, 15 deletions
diff --git a/src/device/device_const.c b/src/device/device_const.c
index c1b0b063ff..f2f0177f57 100644
--- a/src/device/device_const.c
+++ b/src/device/device_const.c
@@ -234,6 +234,18 @@ DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn)
return pcidev_path_on_root(PCI_DEVFN(dev, fn));
}
+DEVTREE_CONST struct device *pcidev_path_on_root_debug(pci_devfn_t devfn, const char *func)
+{
+ DEVTREE_CONST struct device *dev = pcidev_path_on_root(devfn);
+ if (dev)
+ return dev;
+
+ printk(BIOS_ERR, "BUG: %s requests hidden 00:%02x.%u\n", func, devfn >> 3, devfn & 7);
+
+ /* FIXME: This can return wrong device. */
+ return dev_find_slot(0, devfn);
+}
+
/**
* 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 676da65263..d6f80cee0f 100644
--- a/src/include/device/device.h
+++ b/src/include/device/device.h
@@ -275,8 +275,6 @@ void mmconf_resource(struct device *dev, unsigned long index);
void tolm_test(void *gp, struct device *dev, struct resource *new);
u32 find_pci_tolm(struct bus *bus);
-DEVTREE_CONST struct device *dev_find_slot(unsigned int bus,
- unsigned int devfn);
DEVTREE_CONST struct device *dev_find_next_pci_device(
DEVTREE_CONST struct device *previous_dev);
DEVTREE_CONST struct device *dev_find_slot_on_smbus(unsigned int bus,
@@ -292,6 +290,10 @@ DEVTREE_CONST struct device *pcidev_path_on_bus(unsigned int bus, pci_devfn_t de
DEVTREE_CONST struct device *pcidev_on_root(uint8_t dev, uint8_t fn);
DEVTREE_CONST struct bus *pci_root_bus(void);
+/* To be deprecated, avoid using. */
+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);
+
void scan_smbus(struct device *bus);
void scan_generic_bus(struct device *bus);
void scan_static_bus(struct device *bus);
diff --git a/src/soc/intel/apollolake/include/soc/pci_devs.h b/src/soc/intel/apollolake/include/soc/pci_devs.h
index a334f63468..c5eaf4c3e8 100644
--- a/src/soc/intel/apollolake/include/soc/pci_devs.h
+++ b/src/soc/intel/apollolake/include/soc/pci_devs.h
@@ -22,8 +22,8 @@
#if !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
diff --git a/src/soc/intel/broadwell/include/soc/pci_devs.h b/src/soc/intel/broadwell/include/soc/pci_devs.h
index 522e3eb166..ae3e08f661 100644
--- a/src/soc/intel/broadwell/include/soc/pci_devs.h
+++ b/src/soc/intel/broadwell/include/soc/pci_devs.h
@@ -25,8 +25,8 @@
#else
#include <device/device.h>
#include <device/pci_def.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#endif
/* System Agent Devices */
diff --git a/src/soc/intel/cannonlake/include/soc/pci_devs.h b/src/soc/intel/cannonlake/include/soc/pci_devs.h
index 1bc028f194..33814b0330 100644
--- a/src/soc/intel/cannonlake/include/soc/pci_devs.h
+++ b/src/soc/intel/cannonlake/include/soc/pci_devs.h
@@ -24,8 +24,8 @@
#if !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
diff --git a/src/soc/intel/denverton_ns/include/soc/pci_devs.h b/src/soc/intel/denverton_ns/include/soc/pci_devs.h
index 303ba67e65..27f9e35326 100644
--- a/src/soc/intel/denverton_ns/include/soc/pci_devs.h
+++ b/src/soc/intel/denverton_ns/include/soc/pci_devs.h
@@ -27,8 +27,8 @@
#if ENV_RAMSTAGE
#include <device/device.h>
#include <device/pci_def.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_##slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_##slot, func)
diff --git a/src/soc/intel/icelake/include/soc/pci_devs.h b/src/soc/intel/icelake/include/soc/pci_devs.h
index 1348f23b78..0eddee2790 100644
--- a/src/soc/intel/icelake/include/soc/pci_devs.h
+++ b/src/soc/intel/icelake/include/soc/pci_devs.h
@@ -23,8 +23,8 @@
#if !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
diff --git a/src/soc/intel/skylake/include/soc/pci_devs.h b/src/soc/intel/skylake/include/soc/pci_devs.h
index 5acaaebc5a..0669ced18c 100644
--- a/src/soc/intel/skylake/include/soc/pci_devs.h
+++ b/src/soc/intel/skylake/include/soc/pci_devs.h
@@ -24,8 +24,8 @@
#if !defined(__SIMPLE_DEVICE__)
#include <device/device.h>
-#define _SA_DEV(slot) pcidev_path_on_root(_SA_DEVFN(slot))
-#define _PCH_DEV(slot, func) pcidev_path_on_root(_PCH_DEVFN(slot, func))
+#define _SA_DEV(slot) pcidev_path_on_root_debug(_SA_DEVFN(slot), __func__)
+#define _PCH_DEV(slot, func) pcidev_path_on_root_debug(_PCH_DEVFN(slot, func), __func__)
#else
#define _SA_DEV(slot) PCI_DEV(0, SA_DEV_SLOT_ ## slot, 0)
#define _PCH_DEV(slot, func) PCI_DEV(0, PCH_DEV_SLOT_ ## slot, func)
@@ -39,7 +39,7 @@
#define SA_DEV_SLOT_PEG 0x01
#define SA_DEVFN_PEG(func) PCI_DEVFN(SA_DEV_SLOT_PEG, func)
-#define SA_DEV_PEG(func) pcidev_path_on_root(SA_DEVFN_PEG(func))
+#define SA_DEV_PEG(func) pcidev_path_on_root_debug(SA_DEVFN_PEG(func), __func__)
#define SA_DEV_PEG0 SA_DEV_PEG(0)
#define SA_DEV_PEG1 SA_DEV_PEG(1)
#define SA_DEV_PEG2 SA_DEV_PEG(2)