mlxsw: Introduce Mellanox SwitchX-2 ASIC support

Benefit from the previously introduced Mellanox Switch infrastructure and add driver for SwitchX-2 ASIC. Note that this driver is very simple now. It implements bare minimum for getting device to work on slow-path. Fast-path offload functionality is going to be added soon. Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Elad Raz <eladr@mellanox.com> Reviewed-by: Scott Feldman <sfeldma@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
mariux64 · Jul 30, 2015 · 31557f0 · 31557f0
1 parent 4ec14b7
commit 31557f0
Show file tree

Hide file tree

Showing 8 changed files with 1,655 additions and 0 deletions.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Kconfig b/drivers/net/ethernet/mellanox/mlxsw/Kconfig
@@ -19,3 +19,14 @@ config MLXSW_PCI
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called mlxsw_pci.
+
+config MLXSW_SWITCHX2
+	tristate "Mellanox Technologies SwitchX-2 support"
+	depends on MLXSW_CORE && NET_SWITCHDEV
+	default m
+	---help---
+	  This driver supports Mellanox Technologies SwitchX-2 Ethernet
+	  Switch ASICs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called mlxsw_switchx2.
diff --git a/drivers/net/ethernet/mellanox/mlxsw/Makefile b/drivers/net/ethernet/mellanox/mlxsw/Makefile
@@ -2,3 +2,5 @@ obj-$(CONFIG_MLXSW_CORE)	+= mlxsw_core.o
 mlxsw_core-objs			:= core.o
 obj-$(CONFIG_MLXSW_PCI)		+= mlxsw_pci.o
 mlxsw_pci-objs			:= pci.o
+obj-$(CONFIG_MLXSW_SWITCHX2)	+= mlxsw_switchx2.o
+mlxsw_switchx2-objs		:= switchx2.o
diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.h b/drivers/net/ethernet/mellanox/mlxsw/core.h
@@ -53,6 +53,8 @@
 #define MODULE_MLXSW_DRIVER_ALIAS(kind)	\
 	MODULE_ALIAS(MLXSW_MODULE_ALIAS_PREFIX kind)
 
+#define MLXSW_DEVICE_KIND_SWITCHX2 "switchx2"
+
 struct mlxsw_core;
 struct mlxsw_driver;
 struct mlxsw_bus;

diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.c b/drivers/net/ethernet/mellanox/mlxsw/pci.c
@@ -55,6 +55,7 @@
 static const char mlxsw_pci_driver_name[] = "mlxsw_pci";
 
 static const struct pci_device_id mlxsw_pci_id_table[] = {
+	{PCI_VDEVICE(MELLANOX, PCI_DEVICE_ID_MELLANOX_SWITCHX2), 0},
 	{0, }
 };
 
@@ -63,6 +64,8 @@ static struct dentry *mlxsw_pci_dbg_root;
 static const char *mlxsw_pci_device_kind_get(const struct pci_device_id *id)
 {
 	switch (id->device) {
+	case PCI_DEVICE_ID_MELLANOX_SWITCHX2:
+		return MLXSW_DEVICE_KIND_SWITCHX2;
 	default:
 		BUG();
 	}

diff --git a/drivers/net/ethernet/mellanox/mlxsw/pci.h b/drivers/net/ethernet/mellanox/mlxsw/pci.h
@@ -39,6 +39,7 @@
 
 #include "item.h"
 
+#define PCI_DEVICE_ID_MELLANOX_SWITCHX2	0xc738
 #define MLXSW_PCI_BAR0_SIZE		(1024 * 1024) /* 1MB */
 #define MLXSW_PCI_PAGE_SIZE		4096
 

diff --git a/drivers/net/ethernet/mellanox/mlxsw/port.h b/drivers/net/ethernet/mellanox/mlxsw/port.h
@@ -51,6 +51,10 @@
 #define MLXSW_PORT_MAX_PHY_PORTS	0x40
 #define MLXSW_PORT_MAX_PORTS		MLXSW_PORT_MAX_PHY_PORTS
 
+#define MLXSW_PORT_DEVID_BITS_OFFSET	10
+#define MLXSW_PORT_PHY_BITS_OFFSET	4
+#define MLXSW_PORT_PHY_BITS_MASK	(MLXSW_PORT_MAX_PHY_PORTS - 1)
+
 #define MLXSW_PORT_CPU_PORT		0x0
 
 #define MLXSW_PORT_DONT_CARE		(MLXSW_PORT_MAX_PORTS)