netdev - [PATCH v14 08/22] sfc: initialize dpa

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Message-ID: <20250417212926.1343268-9-alejandro.lucero-palau@amd.com>
Date: Thu, 17 Apr 2025 22:29:11 +0100
From: <alejandro.lucero-palau@....com>
To: <linux-cxl@...r.kernel.org>, <netdev@...r.kernel.org>,
	<dan.j.williams@...el.com>, <edward.cree@....com>, <davem@...emloft.net>,
	<kuba@...nel.org>, <pabeni@...hat.com>, <edumazet@...gle.com>,
	<dave.jiang@...el.com>
CC: Alejandro Lucero <alucerop@....com>, Jonathan Cameron
	<Jonathan.Cameron@...wei.com>
Subject: [PATCH v14 08/22] sfc: initialize dpa

From: Alejandro Lucero <alucerop@....com>

Use hardcoded values for defining and initializing dpa as there is no
mbox available.

Signed-off-by: Alejandro Lucero <alucerop@....com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
---
 drivers/net/ethernet/sfc/efx_cxl.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/ethernet/sfc/efx_cxl.c b/drivers/net/ethernet/sfc/efx_cxl.c
index 79427a85a1b7..e8bfaf7641e4 100644
--- a/drivers/net/ethernet/sfc/efx_cxl.c
+++ b/drivers/net/ethernet/sfc/efx_cxl.c
@@ -23,6 +23,9 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
 	DECLARE_BITMAP(found, CXL_MAX_CAPS) = {};
 	struct efx_nic *efx = &probe_data->efx;
 	struct pci_dev *pci_dev = efx->pci_dev;
+	struct cxl_dpa_info sfc_dpa_info = {
+		.size = EFX_CTPIO_BUFFER_SIZE
+	};
 	struct efx_cxl *cxl;
 	u16 dvsec;
 	int rc;
@@ -70,6 +73,11 @@ int efx_cxl_init(struct efx_probe_data *probe_data)
 	 */
 	cxl->cxlds.media_ready = true;
 
+	cxl_mem_dpa_init(&sfc_dpa_info, EFX_CTPIO_BUFFER_SIZE, 0);
+	rc = cxl_dpa_setup(&cxl->cxlds, &sfc_dpa_info);
+	if (rc)
+		return rc;
+
 	probe_data->cxl = cxl;
 
 	return 0;
-- 
2.34.1