Change in coreboot[master]: soc/amd/common/block/data_fabric: add data_fabric_write32

[Felix Held (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Marshall Dawson.
Felix Held has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/50620 )

Change subject: soc/amd/common/block/data_fabric: add data_fabric_write32
......................................................................

soc/amd/common/block/data_fabric: add data_fabric_write32

Signed-off-by: Felix Held 
Change-Id: I9c1ae03e9aec1dec45333e697060308cb6cbda4b
---
M src/soc/amd/common/block/data_fabric/data_fabric_helper.c
M src/soc/amd/common/block/include/amdblocks/data_fabric.h
2 files changed, 12 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/50620/1

diff --git a/src/soc/amd/common/block/data_fabric/data_fabric_helper.c b/src/soc/amd/common/block/data_fabric/data_fabric_helper.c
index d97cf52..abd12ed 100644
--- a/src/soc/amd/common/block/data_fabric/data_fabric_helper.c
+++ b/src/soc/amd/common/block/data_fabric/data_fabric_helper.c
@@ -28,3 +28,14 @@
    data_fabric_set_indirect_address(function, reg, instance_id);
    return pci_read_config32(SOC_DF_F4_DEV, DF_FICAD_LO);
 }
+
+void data_fabric_write32(uint8_t function, uint16_t reg, uint8_t instance_id, uint32_t data)
+{
+	if (instance_id == BROADCAST_FABRIC_ID)
+		/* No bit masking required. Macros will apply mask to values. */
+		pci_write_config32(_SOC_DEV(DF_DEV, function), reg, data);
+
+	/* non-broadcast data fabric accesses need to be done via indirect access */
+	data_fabric_set_indirect_address(function, reg, instance_id);
+	pci_write_config32(SOC_DF_F4_DEV, DF_FICAD_LO, data);
+}
diff --git a/src/soc/amd/common/block/include/amdblocks/data_fabric.h b/src/soc/amd/common/block/include/amdblocks/data_fabric.h
index 606d564..3695c4a 100644
--- a/src/soc/amd/common/block/include/amdblocks/data_fabric.h
+++ b/src/soc/amd/common/block/include/amdblocks/data_fabric.h
@@ -8,5 +8,6 @@
 #define BROADCAST_FABRIC_ID		0xff

uint32_t data_fabric_read32(uint8_t function, uint16_t reg, uint8_t instance_id);
+void data_fabric_write32(uint8_t function, uint16_t reg, uint8_t instance_id, uint32_t data);

#endif /* AMD_BLOCK_DATA_FABRIC_H */