soc/intel/baytrail: Fix 16-bit read/write PCI_COMMAND register
Change-Id: I9b15b5458bb8140fa9bb6b0ffb6b9c78e8d8a93b
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40848
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/src/soc/intel/baytrail/smihandler.c b/src/soc/intel/baytrail/smihandler.c
index da97535..6ca4e64 100644
--- a/src/soc/intel/baytrail/smihandler.c
+++ b/src/soc/intel/baytrail/smihandler.c
@@ -58,7 +58,7 @@
for (slot = 0; slot < 0x20; slot++) {
for (func = 0; func < 8; func++) {
- u32 reg32;
+ u16 reg16;
pci_devfn_t dev = PCI_DEV(bus, slot, func);
val = pci_read_config32(dev, PCI_VENDOR_ID);
@@ -68,9 +68,9 @@
continue;
/* Disable Bus Mastering for this one device */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 &= ~PCI_COMMAND_MASTER;
- pci_write_config32(dev, PCI_COMMAND, reg32);
+ reg16 = pci_read_config16(dev, PCI_COMMAND);
+ reg16 &= ~PCI_COMMAND_MASTER;
+ pci_write_config16(dev, PCI_COMMAND, reg16);
/* If this is a bridge, then follow it. */
hdr = pci_read_config8(dev, PCI_HEADER_TYPE);
diff --git a/src/soc/intel/baytrail/southcluster.c b/src/soc/intel/baytrail/southcluster.c
index b406096..3f83e08 100644
--- a/src/soc/intel/baytrail/southcluster.c
+++ b/src/soc/intel/baytrail/southcluster.c
@@ -328,9 +328,9 @@
* that requires setting up the 64-bit BAR. */
pci_write_config32(dev, PCI_BASE_ADDRESS_0, TEMP_BASE_ADDRESS);
pci_write_config32(dev, PCI_BASE_ADDRESS_1, 0);
- pci_write_config8(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
+ pci_write_config16(dev, PCI_COMMAND, PCI_COMMAND_MEMORY);
write32(gctl, read32(gctl) | 0x1);
- pci_write_config8(dev, PCI_COMMAND, 0);
+ pci_write_config16(dev, PCI_COMMAND, 0);
pci_write_config32(dev, PCI_BASE_ADDRESS_0, 0);
}
@@ -452,7 +452,7 @@
/* Common PCI device function disable. */
void southcluster_enable_dev(struct device *dev)
{
- uint32_t reg32;
+ uint16_t reg16;
if (!dev->enabled) {
int slot = PCI_SLOT(dev->path.pci.devfn);
@@ -461,10 +461,10 @@
dev_path(dev), slot, func);
/* Ensure memory, io, and bus master are all disabled */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 &= ~(PCI_COMMAND_MASTER |
+ reg16 = pci_read_config16(dev, PCI_COMMAND);
+ reg16 &= ~(PCI_COMMAND_MASTER |
PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
- pci_write_config32(dev, PCI_COMMAND, reg32);
+ pci_write_config16(dev, PCI_COMMAND, reg16);
/* Place device in D3Hot */
if (place_device_in_d3hot(dev) < 0) {
@@ -477,9 +477,7 @@
sc_disable_devfn(dev);
} else {
/* Enable SERR */
- reg32 = pci_read_config32(dev, PCI_COMMAND);
- reg32 |= PCI_COMMAND_SERR;
- pci_write_config32(dev, PCI_COMMAND, reg32);
+ pci_or_config16(dev, PCI_COMMAND, PCI_COMMAND_SERR);
}
}