[PATCH v3] hw/cxl: Fix missing write mask for HDM decoder target list registers

[Jonathan Cameron <Jonathan.Cameron@huawei.com>]

Without being able to write these registers, no interleaving is possible.
More refined checks of HDM register state on commit to follow.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v3: Actually pass the parameter to the call...
v2: (Ben Widawsky)
- Correctly set a tighter write mask for the endpoint devices where this
  register has a different use.
  
 hw/cxl/cxl-component-utils.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/hw/cxl/cxl-component-utils.c b/hw/cxl/cxl-component-utils.c
index 7985c9bfca..2208284ee6 100644
--- a/hw/cxl/cxl-component-utils.c
+++ b/hw/cxl/cxl-component-utils.c
@@ -154,7 +154,8 @@ static void ras_init_common(uint32_t *reg_state, uint32_t *write_msk)
     reg_state[R_CXL_RAS_ERR_CAP_CTRL] = 0x00;
 }
 
-static void hdm_init_common(uint32_t *reg_state, uint32_t *write_msk)
+static void hdm_init_common(uint32_t *reg_state, uint32_t *write_msk,
+                            enum reg_type type)
 {
     int decoder_count = 1;
     int i;
@@ -174,6 +175,12 @@ static void hdm_init_common(uint32_t *reg_state, uint32_t *write_msk)
         write_msk[R_CXL_HDM_DECODER0_SIZE_LO + i * 0x20] = 0xf0000000;
         write_msk[R_CXL_HDM_DECODER0_SIZE_HI + i * 0x20] = 0xffffffff;
         write_msk[R_CXL_HDM_DECODER0_CTRL + i * 0x20] = 0x13ff;
+        if (type == CXL2_DEVICE) {
+            write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * 0x20] = 0xf0000000;
+        } else {
+            write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_LO + i * 0x20] = 0xffffffff;
+        }
+        write_msk[R_CXL_HDM_DECODER0_TARGET_LIST_HI + i * 0x20] = 0xffffffff;
     }
 }
 
@@ -239,7 +246,7 @@ void cxl_component_register_init_common(uint32_t *reg_state, uint32_t *write_msk
     }
 
     init_cap_reg(HDM, 5, 1);
-    hdm_init_common(reg_state, write_msk);
+    hdm_init_common(reg_state, write_msk, type);
 
     if (caps < 5) {
         return;
-- 
2.32.0