nfp: add support for NFP3800/NFP3803 PCIe devices

Enable binding the nfp driver to NFP3800 and NFP3803 devices.
The PCIE_SRAM offset is different for the NFP3800 device, which also
only supports a single explicit group.

Changes to Dirk's work:
* 48-bit dma addressing is not ready yet. Keep 40-bit dma addressing
for NFP3800.
Signed-off-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Fei Qin <fei.qin@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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

@@ -33,6 +33,10 @@
 static const char nfp_driver_name[] = "nfp";
 
 static const struct pci_device_id nfp_pci_device_ids[] = {
+	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP3800,
+	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
+	  PCI_ANY_ID, 0, NFP_DEV_NFP3800,
+	},
 	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000,
 	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
 	  PCI_ANY_ID, 0, NFP_DEV_NFP6000,

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

@@ -38,6 +38,10 @@ struct nfp_net_vf {
 static const char nfp_net_driver_name[] = "nfp_netvf";
 
 static const struct pci_device_id nfp_netvf_pci_device_ids[] = {
+	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP3800_VF,
+	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
+	  PCI_ANY_ID, 0, NFP_DEV_NFP3800_VF,
+	},
 	{ PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF,
 	  PCI_VENDOR_ID_NETRONOME, PCI_ANY_ID,
 	  PCI_ANY_ID, 0, NFP_DEV_NFP6000_VF,

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

@@ -32,10 +32,6 @@
 
 #define PCI_64BIT_BAR_COUNT             3
 
-/* NFP hardware vendor/device ids.
- */
-#define PCI_DEVICE_ID_NETRONOME_NFP3800	0x3800
-
 #define NFP_CPP_NUM_TARGETS             16
 /* Max size of area it should be safe to request */
 #define NFP_CPP_SAFE_AREA_SIZE		SZ_2M

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

@@ -8,6 +8,25 @@
 #include "nfp_dev.h"
 
 const struct nfp_dev_info nfp_dev_info[NFP_DEV_CNT] = {
+	[NFP_DEV_NFP3800] = {
+		.dma_mask		= DMA_BIT_MASK(40),
+		.qc_idx_mask		= GENMASK(8, 0),
+		.qc_addr_offset		= 0x400000,
+		.min_qc_size		= 512,
+		.max_qc_size		= SZ_64K,
+
+		.chip_names		= "NFP3800",
+		.pcie_cfg_expbar_offset	= 0x0a00,
+		.pcie_expl_offset	= 0xd000,
+		.qc_area_sz		= 0x100000,
+	},
+	[NFP_DEV_NFP3800_VF] = {
+		.dma_mask		= DMA_BIT_MASK(40),
+		.qc_idx_mask		= GENMASK(8, 0),
+		.qc_addr_offset		= 0,
+		.min_qc_size		= 512,
+		.max_qc_size		= SZ_64K,
+	},
 	[NFP_DEV_NFP6000] = {
 		.dma_mask		= DMA_BIT_MASK(40),
 		.qc_idx_mask		= GENMASK(7, 0),

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

@@ -7,6 +7,8 @@
 #include <linux/types.h>
 
 enum nfp_dev_id {
+	NFP_DEV_NFP3800,
+	NFP_DEV_NFP3800_VF,
 	NFP_DEV_NFP6000,
 	NFP_DEV_NFP6000_VF,
 	NFP_DEV_CNT,

include/linux/pci_ids.h

@@ -2531,9 +2531,11 @@
 #define PCI_VENDOR_ID_HUAWEI		0x19e5
 
 #define PCI_VENDOR_ID_NETRONOME		0x19ee
+#define PCI_DEVICE_ID_NETRONOME_NFP3800	0x3800
 #define PCI_DEVICE_ID_NETRONOME_NFP4000	0x4000
 #define PCI_DEVICE_ID_NETRONOME_NFP5000	0x5000
 #define PCI_DEVICE_ID_NETRONOME_NFP6000	0x6000
+#define PCI_DEVICE_ID_NETRONOME_NFP3800_VF	0x3803
 #define PCI_DEVICE_ID_NETRONOME_NFP6000_VF	0x6003
 
 #define PCI_VENDOR_ID_QMI		0x1a32