diff mbox series

[v5,07/27] sfc: use cxl api for regs setup and checking

Message ID 20241118164434.7551-8-alejandro.lucero-palau@amd.com (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series cxl: add type2 device basic support | expand

Checks

Context Check Description
netdev/series_format fail Series longer than 15 patches
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 4 maintainers not CCed: habetsm.xilinx@gmail.com linux-net-drivers@amd.com andrew+netdev@lunn.ch ecree.xilinx@gmail.com
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4 this patch: 4
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 31 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Lucero Palau, Alejandro Nov. 18, 2024, 4:44 p.m. UTC 
From: Alejandro Lucero <alucerop@amd.com>

Use cxl code for registers discovery and mapping.

Validate capabilities found based on those registers against expected
capabilities.

Signed-off-by: Alejandro Lucero <alucerop@amd.com>
---
 drivers/net/ethernet/sfc/efx_cxl.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index 99f396028639..d6afd1b5499f 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -21,6 +21,8 @@ 
 int efx_cxl_init(struct efx_probe_data *probe_data)
 {
 	struct efx_nic *efx = &probe_data->efx;
+	DECLARE_BITMAP(expected, CXL_MAX_CAPS);
+	DECLARE_BITMAP(found, CXL_MAX_CAPS);
 	struct pci_dev *pci_dev;
 	struct efx_cxl *cxl;
 	struct resource res;
@@ -65,6 +67,23 @@  int efx_cxl_init(struct efx_probe_data *probe_data)
 		goto err2;
 	}
 
+	rc = cxl_pci_accel_setup_regs(pci_dev, cxl->cxlds);
+	if (rc) {
+		pci_err(pci_dev, "CXL accel setup regs failed");
+		goto err2;
+	}
+
+	bitmap_clear(expected, 0, CXL_MAX_CAPS);
+	bitmap_set(expected, CXL_DEV_CAP_HDM, 1);
+	bitmap_set(expected, CXL_DEV_CAP_RAS, 1);
+
+	if (!cxl_pci_check_caps(cxl->cxlds, expected, found, false)) {
+		pci_err(pci_dev,
+			"CXL device capabilities found(%08lx) not as expected(%08lx)",
+			*found, *expected);
+		goto err2;
+	}
+
 	probe_data->cxl = cxl;
 
 	return 0;