nfp: use dev_info for the DMA mask

In preparation for new chips instead of defines use dev_info constants
to store DMA mask length.
Signed-off-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NFei Qin <fei.qin@corigine.com>
Signed-off-by: NSimon Horman <simon.horman@corigine.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

drivers/net/ethernet/netronome/nfp/nfp_main.c

@@ -685,8 +685,7 @@ static int nfp_pci_probe(struct pci_dev *pdev,
 
 	pci_set_master(pdev);
 
-	err = dma_set_mask_and_coherent(&pdev->dev,
-					DMA_BIT_MASK(NFP_NET_MAX_DMA_BITS));
+	err = dma_set_mask_and_coherent(&pdev->dev, dev_info->dma_mask);
 	if (err)
 		goto err_pci_disable;
 

drivers/net/ethernet/netronome/nfp/nfp_net.h

@@ -63,9 +63,6 @@
 #define NFP_NET_Q0_BAR		2
 #define NFP_NET_Q1_BAR		4	/* OBSOLETE */
 
-/* Max bits in DMA address */
-#define NFP_NET_MAX_DMA_BITS	40
-
 /* Default size for MTU and freelist buffer sizes */
 #define NFP_NET_DEFAULT_MTU		1500U
 

drivers/net/ethernet/netronome/nfp/nfp_netvf_main.c

@@ -98,8 +98,7 @@ static int nfp_netvf_pci_probe(struct pci_dev *pdev,
 
 	pci_set_master(pdev);
 
-	err = dma_set_mask_and_coherent(&pdev->dev,
-					DMA_BIT_MASK(NFP_NET_MAX_DMA_BITS));
+	err = dma_set_mask_and_coherent(&pdev->dev, dev_info->dma_mask);
 	if (err)
 		goto err_pci_regions;
 

drivers/net/ethernet/netronome/nfp/nfpcore/nfp_dev.c

 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 /* Copyright (C) 2019 Netronome Systems, Inc. */
 
+#include <linux/dma-mapping.h>
+
 #include "nfp_dev.h"
 
 const struct nfp_dev_info nfp_dev_info[NFP_DEV_CNT] = {
 	[NFP_DEV_NFP6000] = {
+		.dma_mask		= DMA_BIT_MASK(40),
 		.chip_names		= "NFP4000/NFP5000/NFP6000",
 		.pcie_cfg_expbar_offset	= 0x0400,
 		.pcie_expl_offset	= 0x1000,

drivers/net/ethernet/netronome/nfp/nfpcore/nfp_dev.h

@@ -12,6 +12,7 @@ enum nfp_dev_id {
 };
 
 struct nfp_dev_info {
+	u64 dma_mask;
 	const char *chip_names;
 	u32 pcie_cfg_expbar_offset;
 	u32 pcie_expl_offset;