device: Switch pci_dev_is_wake_source to take pci_devfn_t
With the recent switch to SMM module loader v2, the size of the SMM for
module google/volteer increased to above 64K in size, and thus failed to
install the permanent SMM handler. Turns out, the devicetree is all
pulled into the SMM build because of elog, which calls
`pci_dev_is_wake_source`, and is the only user of `struct device` in
SMM. Changing this function to take a pci_devfn_t instead allows the
linker to remove almost the entire devicetree from SMM (only usage left
is when disabling HECI via SMM).
BUG=b:186661594
TEST=Verify loaded program size of `smm.elf` for google/volteer is
almost ~50% smaller.
Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I4c39e5188321c8711d6479b15065e5aaedad8f38
Reviewed-on: https://review.coreboot.org/c/coreboot/+/52765
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
diff --git a/src/device/pci_ops.c b/src/device/pci_ops.c
index aaa9f95..76d5e96 100644
--- a/src/device/pci_ops.c
+++ b/src/device/pci_ops.c
@@ -79,19 +79,16 @@
die("PCI: dev is NULL!\n");
}
-bool pci_dev_is_wake_source(const struct device *dev)
+bool pci_dev_is_wake_source(pci_devfn_t dev)
{
unsigned int pm_cap;
uint16_t pmcs;
- if (dev->path.type != DEVICE_PATH_PCI)
- return false;
-
- pm_cap = pci_find_capability(dev, PCI_CAP_ID_PM);
+ pm_cap = pci_s_find_capability(dev, PCI_CAP_ID_PM);
if (!pm_cap)
return false;
- pmcs = pci_s_read_config16(PCI_BDF(dev), pm_cap + PCI_PM_CTRL);
+ pmcs = pci_s_read_config16(dev, pm_cap + PCI_PM_CTRL);
/* PCI Device is a wake source if PME_ENABLE and PME_STATUS are set in PMCS register. */
return (pmcs & PCI_PM_CTRL_PME_ENABLE) && (pmcs & PCI_PM_CTRL_PME_STATUS);
diff --git a/src/drivers/wifi/generic/generic.c b/src/drivers/wifi/generic/generic.c
index 5429f6b..1ee7ab2 100644
--- a/src/drivers/wifi/generic/generic.c
+++ b/src/drivers/wifi/generic/generic.c
@@ -10,7 +10,7 @@
static void wifi_pci_dev_init(struct device *dev)
{
- if (pci_dev_is_wake_source(dev))
+ if (pci_dev_is_wake_source(PCI_BDF(dev)))
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_WIFI, 0);
}
diff --git a/src/include/device/pci_ops.h b/src/include/device/pci_ops.h
index 7fe7d42..a167825 100644
--- a/src/include/device/pci_ops.h
+++ b/src/include/device/pci_ops.h
@@ -215,6 +215,6 @@
*
* Returns true if PCI device is wake source, false otherwise.
*/
-bool pci_dev_is_wake_source(const struct device *dev);
+bool pci_dev_is_wake_source(pci_devfn_t dev);
#endif /* PCI_OPS_H */
diff --git a/src/soc/intel/alderlake/elog.c b/src/soc/intel/alderlake/elog.c
index 1efba25..84765d9 100644
--- a/src/soc/intel/alderlake/elog.c
+++ b/src/soc/intel/alderlake/elog.c
@@ -48,11 +48,8 @@
};
for (i = 0; i < MIN(CONFIG_MAX_ROOT_PORTS, ARRAY_SIZE(pme_map)); ++i) {
- const struct device *dev = pcidev_path_on_root(pme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev))
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(pme_map[i].devfn),
+ PCI_FUNC(pme_map[i].devfn))))
elog_add_event_wake(pme_map[i].wake_source, 0);
}
}
@@ -77,11 +74,8 @@
size_t i;
for (i = 0; i < ARRAY_SIZE(ipme_map); i++) {
- const struct device *dev = pcidev_path_on_root(ipme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ unsigned int devfn = ipme_map[i].devfn;
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)))) {
elog_add_event_wake(ipme_map[i].wake_source, 0);
dev_found = true;
}
@@ -89,11 +83,8 @@
/* Check Thunderbolt ports */
for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
- const struct device *dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ unsigned int devfn = SA_DEVFN_TBT(i);
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)))) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TBT, i);
dev_found = true;
}
@@ -101,11 +92,8 @@
/* Check DMA devices */
for (i = 0; i < NUM_TCSS_DMA_FUNCTIONS; i++) {
- const struct device *dev = pcidev_path_on_root(SA_DEVFN_TCSS_DMA(i));
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ unsigned int devfn = SA_DEVFN_TCSS_DMA(i);
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)))) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TCSS_DMA, i);
dev_found = true;
}
diff --git a/src/soc/intel/jasperlake/elog.c b/src/soc/intel/jasperlake/elog.c
index ccf6fd0..858b371 100644
--- a/src/soc/intel/jasperlake/elog.c
+++ b/src/soc/intel/jasperlake/elog.c
@@ -48,11 +48,8 @@
};
for (i = 0; i < MIN(CONFIG_MAX_ROOT_PORTS, ARRAY_SIZE(pme_map)); ++i) {
- const struct device *dev = pcidev_path_on_root(pme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev))
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(pme_map[i].devfn),
+ PCI_FUNC(pme_map[i].devfn))))
elog_add_event_wake(pme_map[i].wake_source, 0);
}
}
@@ -75,11 +72,8 @@
};
for (i = 0; i < ARRAY_SIZE(ipme_map); i++) {
- const struct device *dev = pcidev_path_on_root(ipme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(ipme_map[i].devfn),
+ PCI_FUNC(ipme_map[i].devfn)))) {
elog_add_event_wake(ipme_map[i].wake_source, 0);
dev_found = true;
}
diff --git a/src/soc/intel/tigerlake/elog.c b/src/soc/intel/tigerlake/elog.c
index 878959a..0fccf84 100644
--- a/src/soc/intel/tigerlake/elog.c
+++ b/src/soc/intel/tigerlake/elog.c
@@ -48,11 +48,8 @@
};
for (i = 0; i < MIN(CONFIG_MAX_ROOT_PORTS, ARRAY_SIZE(pme_map)); ++i) {
- const struct device *dev = pcidev_path_on_root(pme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev))
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(pme_map[i].devfn),
+ PCI_FUNC(pme_map[i].devfn))))
elog_add_event_wake(pme_map[i].wake_source, 0);
}
}
@@ -76,12 +73,8 @@
size_t i;
for (i = 0; i < ARRAY_SIZE(ipme_map); i++) {
- const struct device *dev =
- pcidev_path_on_root(ipme_map[i].devfn);
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(ipme_map[i].devfn),
+ PCI_FUNC(ipme_map[i].devfn)))) {
elog_add_event_wake(ipme_map[i].wake_source, 0);
dev_found = true;
}
@@ -89,11 +82,8 @@
/* Check Thunderbolt ports */
for (i = 0; i < NUM_TBT_FUNCTIONS; i++) {
- const struct device *dev = pcidev_path_on_root(SA_DEVFN_TBT(i));
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ const unsigned int devfn = SA_DEVFN_TBT(i);
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)))) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TBT, i);
dev_found = true;
}
@@ -101,11 +91,8 @@
/* Check DMA devices */
for (i = 0; i < NUM_TCSS_DMA_FUNCTIONS; i++) {
- const struct device *dev = pcidev_path_on_root(SA_DEVFN_TCSS_DMA(i));
- if (!dev)
- continue;
-
- if (pci_dev_is_wake_source(dev)) {
+ const unsigned int devfn = SA_DEVFN_TCSS_DMA(i);
+ if (pci_dev_is_wake_source(PCI_DEV(0, PCI_SLOT(devfn), PCI_FUNC(devfn)))) {
elog_add_event_wake(ELOG_WAKE_SOURCE_PME_TCSS_DMA, i);
dev_found = true;
}