[v3,05/40] cxl/pci: Add new DVSEC definitions

Commit Message

Dan Williams Jan. 24, 2022, 12:29 a.m. UTC

From: Ben Widawsky <[e-mail]>

In preparation for properly supporting memory active timeout, and later
on, other attributes obtained from DVSEC fields, add the full list of
DVSEC identifiers from the CXL 2.0 specification.

Reviewed-by: Dan Williams <[e-mail]>
Reviewed-by: Jonathan Cameron <[e-mail]> (v1)
Signed-off-by: Ben Widawsky <[e-mail]>
Signed-off-by: Dan Williams <[e-mail]>
---
 drivers/cxl/pci.h |   15 +++++++++++++++
 1 file changed, 15 insertions(+)

Patch

diff --git a/drivers/cxl/pci.h b/drivers/cxl/pci.h
index 29b8eaef3a0a..8ae2b4adc59d 100644
--- a/drivers/cxl/pci.h
+++ b/drivers/cxl/pci.h
@@ -16,6 +16,21 @@ 
 /* CXL 2.0 8.1.3: PCIe DVSEC for CXL Device */
 #define CXL_DVSEC_PCIE_DEVICE					0
 
+/* CXL 2.0 8.1.4: Non-CXL Function Map DVSEC */
+#define CXL_DVSEC_FUNCTION_MAP					2
+
+/* CXL 2.0 8.1.5: CXL 2.0 Extensions DVSEC for Ports */
+#define CXL_DVSEC_PORT_EXTENSIONS				3
+
+/* CXL 2.0 8.1.6: GPF DVSEC for CXL Port */
+#define CXL_DVSEC_PORT_GPF					4
+
+/* CXL 2.0 8.1.7: GPF DVSEC for CXL Device */
+#define CXL_DVSEC_DEVICE_GPF					5
+
+/* CXL 2.0 8.1.8: PCIe DVSEC for Flex Bus Port */
+#define CXL_DVSEC_PCIE_FLEXBUS_PORT				7
+
 /* CXL 2.0 8.1.9: Register Locator DVSEC */
 #define CXL_DVSEC_REG_LOCATOR					8
 #define   CXL_DVSEC_REG_LOCATOR_BLOCK1_OFFSET			0xC