net: bcmasp: Add support for ASP2.0 Ethernet controller

Add support for the Broadcom ASP 2.0 Ethernet controller which is first
introduced with 72165. This controller features two distinct Ethernet
ports that can be independently operated.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Justin Chen <justin.chen@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/Kconfig

@@ -255,4 +255,15 @@ config BNXT_HWMON
 	  Say Y if you want to expose the thermal sensor data on NetXtreme-C/E
 	  devices, via the hwmon sysfs interface.
 
+config BCMASP
+	tristate "Broadcom ASP 2.0 Ethernet support"
+	default ARCH_BRCMSTB
+	depends on OF
+	select MII
+	select PHYLIB
+	select MDIO_BCM_UNIMAC
+	help
+	  This configuration enables the Broadcom ASP 2.0 Ethernet controller
+	  driver which is present in Broadcom STB SoCs such as 72165.
+
 endif # NET_VENDOR_BROADCOM

drivers/net/ethernet/broadcom/Makefile

@@ -17,3 +17,4 @@ obj-$(CONFIG_BGMAC_BCMA) += bgmac-bcma.o bgmac-bcma-mdio.o
 obj-$(CONFIG_BGMAC_PLATFORM) += bgmac-platform.o
 obj-$(CONFIG_SYSTEMPORT) += bcmsysport.o
 obj-$(CONFIG_BNXT) += bnxt/
+obj-$(CONFIG_BCMASP) += asp2/

drivers/net/ethernet/broadcom/asp2/Makefile

+obj-$(CONFIG_BCMASP) += bcm-asp.o
+bcm-asp-objs := bcmasp.o bcmasp_intf.o bcmasp_ethtool.o

drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c

+// SPDX-License-Identifier: GPL-2.0
+#define pr_fmt(fmt)				"bcmasp_ethtool: " fmt
+
+#include <linux/ethtool.h>
+#include <linux/netdevice.h>
+#include <linux/platform_device.h>
+
+#include "bcmasp.h"
+#include "bcmasp_intf_defs.h"
+
+static void bcmasp_get_drvinfo(struct net_device *dev,
+			       struct ethtool_drvinfo *info)
+{
+	strscpy(info->driver, "bcmasp", sizeof(info->driver));
+	strscpy(info->bus_info, dev_name(dev->dev.parent),
+		sizeof(info->bus_info));
+}
+
+static u32 bcmasp_get_msglevel(struct net_device *dev)
+{
+	struct bcmasp_intf *intf = netdev_priv(dev);
+
+	return intf->msg_enable;
+}
+
+static void bcmasp_set_msglevel(struct net_device *dev, u32 level)
+{
+	struct bcmasp_intf *intf = netdev_priv(dev);
+
+	intf->msg_enable = level;
+}
+
+const struct ethtool_ops bcmasp_ethtool_ops = {
+	.get_drvinfo		= bcmasp_get_drvinfo,
+	.get_link		= ethtool_op_get_link,
+	.get_link_ksettings	= phy_ethtool_get_link_ksettings,
+	.set_link_ksettings	= phy_ethtool_set_link_ksettings,
+	.get_msglevel		= bcmasp_get_msglevel,
+	.set_msglevel		= bcmasp_set_msglevel,
+};

drivers/net/ethernet/broadcom/asp2/bcmasp_intf_defs.h

+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __BCMASP_INTF_DEFS_H
+#define __BCMASP_INTF_DEFS_H
+
+#define UMC_OFFSET(intf)		\
+	((((intf)->port) * 0x800) + 0xc000)
+#define  UMC_CMD			0x008
+#define   UMC_CMD_TX_EN			BIT(0)
+#define   UMC_CMD_RX_EN			BIT(1)
+#define   UMC_CMD_SPEED_SHIFT		0x2
+#define    UMC_CMD_SPEED_MASK		0x3
+#define    UMC_CMD_SPEED_10		0x0
+#define    UMC_CMD_SPEED_100		0x1
+#define    UMC_CMD_SPEED_1000		0x2
+#define    UMC_CMD_SPEED_2500		0x3
+#define   UMC_CMD_PROMISC		BIT(4)
+#define   UMC_CMD_PAD_EN		BIT(5)
+#define   UMC_CMD_CRC_FWD		BIT(6)
+#define   UMC_CMD_PAUSE_FWD		BIT(7)
+#define   UMC_CMD_RX_PAUSE_IGNORE	BIT(8)
+#define   UMC_CMD_TX_ADDR_INS		BIT(9)
+#define   UMC_CMD_HD_EN			BIT(10)
+#define   UMC_CMD_SW_RESET		BIT(13)
+#define   UMC_CMD_LCL_LOOP_EN		BIT(15)
+#define   UMC_CMD_AUTO_CONFIG		BIT(22)
+#define   UMC_CMD_CNTL_FRM_EN		BIT(23)
+#define   UMC_CMD_NO_LEN_CHK		BIT(24)
+#define   UMC_CMD_RMT_LOOP_EN		BIT(25)
+#define   UMC_CMD_PRBL_EN		BIT(27)
+#define   UMC_CMD_TX_PAUSE_IGNORE	BIT(28)
+#define   UMC_CMD_TX_RX_EN		BIT(29)
+#define   UMC_CMD_RUNT_FILTER_DIS	BIT(30)
+#define  UMC_MAC0			0x0c
+#define  UMC_MAC1			0x10
+#define  UMC_FRM_LEN			0x14
+#define  UMC_EEE_CTRL			0x64
+#define   EN_LPI_RX_PAUSE		BIT(0)
+#define   EN_LPI_TX_PFC			BIT(1)
+#define   EN_LPI_TX_PAUSE		BIT(2)
+#define   EEE_EN			BIT(3)
+#define   RX_FIFO_CHECK			BIT(4)
+#define   EEE_TX_CLK_DIS		BIT(5)
+#define   DIS_EEE_10M			BIT(6)
+#define   LP_IDLE_PREDICTION_MODE	BIT(7)
+#define  UMC_EEE_LPI_TIMER		0x68
+#define  UMC_PAUSE_CNTRL		0x330
+#define  UMC_TX_FLUSH			0x334
+#define  UMC_MIB_START			0x400
+#define  UMC_MIB_CNTRL			0x580
+#define   UMC_MIB_CNTRL_RX_CNT_RST	BIT(0)
+#define   UMC_MIB_CNTRL_RUNT_CNT_RST	BIT(1)
+#define   UMC_MIB_CNTRL_TX_CNT_RST	BIT(2)
+#define  UMC_RX_MAX_PKT_SZ		0x608
+#define  UMC_MPD_CTRL			0x620
+#define   UMC_MPD_CTRL_MPD_EN		BIT(0)
+#define   UMC_MPD_CTRL_PSW_EN		BIT(27)
+#define  UMC_PSW_MS			0x624
+#define  UMC_PSW_LS			0x628
+
+#define UMAC2FB_OFFSET_2_1		0x9f044
+#define UMAC2FB_OFFSET			0x9f03c
+#define  UMAC2FB_CFG			0x0
+#define   UMAC2FB_CFG_OPUT_EN		BIT(0)
+#define   UMAC2FB_CFG_VLAN_EN		BIT(1)
+#define   UMAC2FB_CFG_SNAP_EN		BIT(2)
+#define   UMAC2FB_CFG_BCM_TG_EN		BIT(3)
+#define   UMAC2FB_CFG_IPUT_EN		BIT(4)
+#define   UMAC2FB_CFG_CHID_SHIFT	8
+#define   UMAC2FB_CFG_OK_SEND_SHIFT	24
+#define   UMAC2FB_CFG_DEFAULT_EN	\
+		(UMAC2FB_CFG_OPUT_EN | UMAC2FB_CFG_VLAN_EN \
+		| UMAC2FB_CFG_SNAP_EN | UMAC2FB_CFG_IPUT_EN)
+
+#define RGMII_OFFSET(intf)	\
+	((((intf)->port) * 0x100) + 0xd000)
+#define  RGMII_EPHY_CNTRL		0x00
+#define    RGMII_EPHY_CFG_IDDQ_BIAS	BIT(0)
+#define    RGMII_EPHY_CFG_EXT_PWRDOWN	BIT(1)
+#define    RGMII_EPHY_CFG_FORCE_DLL_EN	BIT(2)
+#define    RGMII_EPHY_CFG_IDDQ_GLOBAL	BIT(3)
+#define    RGMII_EPHY_CK25_DIS		BIT(4)
+#define    RGMII_EPHY_RESET		BIT(7)
+#define  RGMII_OOB_CNTRL		0x0c
+#define   RGMII_LINK			BIT(4)
+#define   RGMII_OOB_DIS			BIT(5)
+#define   RGMII_MODE_EN			BIT(6)
+#define   RGMII_ID_MODE_DIS		BIT(16)
+
+#define RGMII_PORT_CNTRL		0x60
+#define   RGMII_PORT_MODE_EPHY		0
+#define   RGMII_PORT_MODE_GPHY		1
+#define   RGMII_PORT_MODE_EXT_EPHY	2
+#define   RGMII_PORT_MODE_EXT_GPHY	3
+#define   RGMII_PORT_MODE_EXT_RVMII	4
+#define   RGMII_PORT_MODE_MASK		GENMASK(2, 0)
+
+#define RGMII_SYS_LED_CNTRL		0x74
+#define  RGMII_SYS_LED_CNTRL_LINK_OVRD	BIT(15)
+
+#define TX_SPB_DMA_OFFSET(intf) \
+	((((intf)->channel) * 0x30) + 0x48180)
+#define  TX_SPB_DMA_READ		0x00
+#define  TX_SPB_DMA_BASE		0x08
+#define  TX_SPB_DMA_END			0x10
+#define  TX_SPB_DMA_VALID		0x18
+#define  TX_SPB_DMA_FIFO_CTRL		0x20
+#define   TX_SPB_DMA_FIFO_FLUSH		BIT(0)
+#define  TX_SPB_DMA_FIFO_STATUS		0x24
+
+#define TX_SPB_CTRL_OFFSET(intf) \
+	((((intf)->channel) * 0x68) + 0x49340)
+#define  TX_SPB_CTRL_ENABLE		0x0
+#define   TX_SPB_CTRL_ENABLE_EN		BIT(0)
+#define  TX_SPB_CTRL_XF_CTRL2		0x20
+#define   TX_SPB_CTRL_XF_BID_SHIFT	16
+
+#define TX_SPB_TOP_OFFSET(intf) \
+	((((intf)->channel) * 0x1c) + 0x4a0e0)
+#define TX_SPB_TOP_BLKOUT		0x0
+#define TX_SPB_TOP_SPRE_BW_CTRL		0x4
+
+#define TX_EPKT_C_OFFSET(intf) \
+	((((intf)->channel) * 0x120) + 0x40900)
+#define  TX_EPKT_C_CFG_MISC		0x0
+#define   TX_EPKT_C_CFG_MISC_EN		BIT(0)
+#define   TX_EPKT_C_CFG_MISC_PT		BIT(1)
+#define   TX_EPKT_C_CFG_MISC_PS_SHIFT	14
+#define   TX_EPKT_C_CFG_MISC_FD_SHIFT	20
+
+#define TX_PAUSE_CTRL_OFFSET(intf) \
+	((((intf)->channel * 0xc) + 0x49a20))
+#define  TX_PAUSE_MAP_VECTOR		0x8
+
+#define RX_EDPKT_DMA_OFFSET(intf) \
+	((((intf)->channel) * 0x38) + 0x9ca00)
+#define  RX_EDPKT_DMA_WRITE		0x00
+#define  RX_EDPKT_DMA_READ		0x08
+#define  RX_EDPKT_DMA_BASE		0x10
+#define  RX_EDPKT_DMA_END		0x18
+#define  RX_EDPKT_DMA_VALID		0x20
+#define  RX_EDPKT_DMA_FULLNESS		0x28
+#define  RX_EDPKT_DMA_MIN_THRES		0x2c
+#define  RX_EDPKT_DMA_CH_XONOFF		0x30
+
+#define RX_EDPKT_CFG_OFFSET(intf) \
+	((((intf)->channel) * 0x70) + 0x9c600)
+#define  RX_EDPKT_CFG_CFG0		0x0
+#define   RX_EDPKT_CFG_CFG0_DBUF_SHIFT	9
+#define    RX_EDPKT_CFG_CFG0_RBUF	0x0
+#define    RX_EDPKT_CFG_CFG0_RBUF_4K	0x1
+#define    RX_EDPKT_CFG_CFG0_BUF_4K	0x2
+/* EFRM STUFF, 0 = no byte stuff, 1 = two byte stuff */
+#define   RX_EDPKT_CFG_CFG0_EFRM_STUF	BIT(11)
+#define   RX_EDPKT_CFG_CFG0_BALN_SHIFT	12
+#define    RX_EDPKT_CFG_CFG0_NO_ALN	0
+#define    RX_EDPKT_CFG_CFG0_4_ALN	2
+#define    RX_EDPKT_CFG_CFG0_64_ALN	6
+#define  RX_EDPKT_RING_BUFFER_WRITE	0x38
+#define  RX_EDPKT_RING_BUFFER_READ	0x40
+#define  RX_EDPKT_RING_BUFFER_BASE	0x48
+#define  RX_EDPKT_RING_BUFFER_END	0x50
+#define  RX_EDPKT_RING_BUFFER_VALID	0x58
+#define  RX_EDPKT_CFG_ENABLE		0x6c
+#define   RX_EDPKT_CFG_ENABLE_EN	BIT(0)
+
+#define RX_SPB_DMA_OFFSET(intf) \
+	((((intf)->channel) * 0x30) + 0xa0000)
+#define  RX_SPB_DMA_READ		0x00
+#define  RX_SPB_DMA_BASE		0x08
+#define  RX_SPB_DMA_END			0x10
+#define  RX_SPB_DMA_VALID		0x18
+#define  RX_SPB_DMA_FIFO_CTRL		0x20
+#define   RX_SPB_DMA_FIFO_FLUSH		BIT(0)
+#define  RX_SPB_DMA_FIFO_STATUS		0x24
+
+#define RX_SPB_CTRL_OFFSET(intf) \
+	((((intf)->channel - 6) * 0x68) + 0xa1000)
+#define  RX_SPB_CTRL_ENABLE		0x00
+#define   RX_SPB_CTRL_ENABLE_EN		BIT(0)
+
+#define RX_PAUSE_CTRL_OFFSET(intf) \
+	((((intf)->channel - 6) * 0x4) + 0xa1138)
+#define  RX_PAUSE_MAP_VECTOR		0x00
+
+#define RX_SPB_TOP_CTRL_OFFSET(intf) \
+	((((intf)->channel - 6) * 0x14) + 0xa2000)
+#define  RX_SPB_TOP_BLKOUT		0x00
+
+#define NUM_4K_BUFFERS			32
+#define RING_BUFFER_SIZE		(PAGE_SIZE * NUM_4K_BUFFERS)
+
+#define DESC_RING_COUNT			(64 * NUM_4K_BUFFERS)
+#define DESC_SIZE			16
+#define DESC_RING_SIZE			(DESC_RING_COUNT * DESC_SIZE)
+
+#endif