[coreboot-gerrit] Change in coreboot[master]: soc/intel/tigerlake: Configure TcssDma0En and TcssDma1En

[John Zhao (Code Review)]

John Zhao has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/41812 )

Change subject: soc/intel/tigerlake: Configure TcssDma0En and TcssDma1En
......................................................................

soc/intel/tigerlake: Configure TcssDma0En and TcssDma1En

Determine the TcssDma0 and TcssDma1 enabling based on TBT DMA
controllers setting.

BUG=:b:146624360
TEST=Booted on Volteer and verified TcssDma0 and TcssDma1 enabling.
lspci shows TcssDma0(0d.2) and TcssDma1(0d.3).

Signed-off-by: John Zhao 
Change-Id: I61ac4131481374e9a2a34d1a30f822046c3897fb
---
M src/soc/intel/tigerlake/romstage/fsp_params.c
1 file changed, 11 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/12/41812/1

diff --git a/src/soc/intel/tigerlake/romstage/fsp_params.c b/src/soc/intel/tigerlake/romstage/fsp_params.c
index ede5059..f7956c8 100644
--- a/src/soc/intel/tigerlake/romstage/fsp_params.c
+++ b/src/soc/intel/tigerlake/romstage/fsp_params.c
@@ -116,8 +116,17 @@
    m_cfg->TcssXdciEn = config->TcssXdciEn;

/* TCSS DMA */
-	m_cfg->TcssDma0En = config->TcssDma0En;
-	m_cfg->TcssDma1En = config->TcssDma1En;
+	dev = pcidev_path_on_root(SA_DEVFN_TCSS_DMA0);
+	if (dev)
+		m_cfg->TcssDma0En = dev->enabled;
+	else
+		m_cfg->TcssDma0En = 0;
+
+	dev = pcidev_path_on_root(SA_DEVFN_TCSS_DMA1);
+	if (dev)
+		m_cfg->TcssDma1En = dev->enabled;
+	else
+		m_cfg->TcssDma1En = 0;

/* USB4/TBT */
    dev = pcidev_path_on_root(SA_DEVFN_TBT0);