RE: [PATCH 2/2] net: ethernet: Add driver for Sunplus SP7021
From: Wells Lu 呂芳騰
Date: Wed Nov 03 2021 - 10:14:22 EST
Hi,
Thanks a lot for review.
> From: Denis Kirjanov <dkirjanov@xxxxxxx>
> Sent: Wednesday, November 3, 2021 8:05 PM
> To: Wells Lu <wellslutw@xxxxxxxxx>; davem@xxxxxxxxxxxxx;
> kuba@xxxxxxxxxx; robh+dt@xxxxxxxxxx; netdev@xxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx;
> p.zabel@xxxxxxxxxxxxxx
> Cc: Wells Lu 呂芳騰 <wells.lu@xxxxxxxxxxx>
> Subject: Re: [PATCH 2/2] net: ethernet: Add driver for Sunplus SP7021
>
>
>
> 11/3/21 2:02 PM, Wells Lu пишет:
> > Add Ethernet driver for Sunplus SP7021.
> >
> > Signed-off-by: Wells Lu <wells.lu@xxxxxxxxxxx>
> > ---
> > MAINTAINERS | 1 +
> > drivers/net/ethernet/Kconfig | 1 +
> > drivers/net/ethernet/Makefile | 1 +
> > drivers/net/ethernet/sunplus/Kconfig | 20 +
> > drivers/net/ethernet/sunplus/Makefile | 6 +
> > drivers/net/ethernet/sunplus/l2sw_define.h | 221 ++++++++
> > drivers/net/ethernet/sunplus/l2sw_desc.c | 233 ++++++++
> > drivers/net/ethernet/sunplus/l2sw_desc.h | 21 +
> > drivers/net/ethernet/sunplus/l2sw_driver.c | 779
> +++++++++++++++++++++++++++
> > drivers/net/ethernet/sunplus/l2sw_driver.h | 23 +
> > drivers/net/ethernet/sunplus/l2sw_hal.c | 422 +++++++++++++++
> > drivers/net/ethernet/sunplus/l2sw_hal.h | 47 ++
> > drivers/net/ethernet/sunplus/l2sw_int.c | 326 +++++++++++
> > drivers/net/ethernet/sunplus/l2sw_int.h | 16 +
> > drivers/net/ethernet/sunplus/l2sw_mac.c | 68 +++
> > drivers/net/ethernet/sunplus/l2sw_mac.h | 24 +
> > drivers/net/ethernet/sunplus/l2sw_mdio.c | 118 ++++
> > drivers/net/ethernet/sunplus/l2sw_mdio.h | 19 +
> > drivers/net/ethernet/sunplus/l2sw_register.h | 99 ++++
> > 19 files changed, 2445 insertions(+)
> > create mode 100644 drivers/net/ethernet/sunplus/Kconfig
> > create mode 100644 drivers/net/ethernet/sunplus/Makefile
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_define.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_desc.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_desc.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_driver.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_driver.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_hal.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_hal.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_int.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_int.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_mac.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_mac.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_mdio.c
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_mdio.h
> > create mode 100644 drivers/net/ethernet/sunplus/l2sw_register.h
> >
> > diff --git a/MAINTAINERS b/MAINTAINERS index 4669c16..ca676ec 100644
> > --- a/MAINTAINERS
> > +++ b/MAINTAINERS
> > @@ -18006,6 +18006,7 @@ L: netdev@xxxxxxxxxxxxxxx
> > S: Maintained
> > W: https://sunplus-tibbo.atlassian.net/wiki/spaces/doc/overview
> > F: Documentation/devicetree/bindings/net/sunplus,sp7021-l2sw.yaml
> > +F: drivers/net/ethernet/sunplus/
> >
> > SUPERH
> > M: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx>
> > diff --git a/drivers/net/ethernet/Kconfig
> > b/drivers/net/ethernet/Kconfig index 412ae3e..0084852 100644
> > --- a/drivers/net/ethernet/Kconfig
> > +++ b/drivers/net/ethernet/Kconfig
> > @@ -176,6 +176,7 @@ source "drivers/net/ethernet/smsc/Kconfig"
> > source "drivers/net/ethernet/socionext/Kconfig"
> > source "drivers/net/ethernet/stmicro/Kconfig"
> > source "drivers/net/ethernet/sun/Kconfig"
> > +source "drivers/net/ethernet/sunplus/Kconfig"
> > source "drivers/net/ethernet/synopsys/Kconfig"
> > source "drivers/net/ethernet/tehuti/Kconfig"
> > source "drivers/net/ethernet/ti/Kconfig"
> > diff --git a/drivers/net/ethernet/Makefile
> > b/drivers/net/ethernet/Makefile index aaa5078..e4ce162 100644
> > --- a/drivers/net/ethernet/Makefile
> > +++ b/drivers/net/ethernet/Makefile
> > @@ -87,6 +87,7 @@ obj-$(CONFIG_NET_VENDOR_SMSC) += smsc/
> > obj-$(CONFIG_NET_VENDOR_SOCIONEXT) += socionext/
> > obj-$(CONFIG_NET_VENDOR_STMICRO) += stmicro/
> > obj-$(CONFIG_NET_VENDOR_SUN) += sun/
> > +obj-$(CONFIG_NET_VENDOR_SUNPLUS) += sunplus/
> > obj-$(CONFIG_NET_VENDOR_TEHUTI) += tehuti/
> > obj-$(CONFIG_NET_VENDOR_TI) += ti/
> > obj-$(CONFIG_NET_VENDOR_TOSHIBA) += toshiba/ diff --git
> > a/drivers/net/ethernet/sunplus/Kconfig
> > b/drivers/net/ethernet/sunplus/Kconfig
> > new file mode 100644
> > index 0000000..a9e3a4c
> > --- /dev/null
> > +++ b/drivers/net/ethernet/sunplus/Kconfig
> > @@ -0,0 +1,20 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +#
> > +# Sunplus Ethernet device configuration #
> > +
> > +config NET_VENDOR_SUNPLUS
> > + tristate "Sunplus Dual 10M/100M Ethernet (with L2 switch) devices"
> > + depends on ETHERNET && SOC_SP7021
> > + select PHYLIB
> > + select PINCTRL_SPPCTL
> > + select COMMON_CLK_SP7021
> > + select RESET_SUNPLUS
> > + select NVMEM_SUNPLUS_OCOTP
> > + help
> > + If you have Sunplus dual 10M/100M Ethernet (with L2 switch)
> > + devices, say Y.
> > + The network device supports dual 10M/100M Ethernet interfaces,
> > + or one 10/100M Ethernet interface with two LAN ports.
> > + To compile this driver as a module, choose M here. The module
> > + will be called sp_l2sw.
> > diff --git a/drivers/net/ethernet/sunplus/Makefile
> > b/drivers/net/ethernet/sunplus/Makefile
> > new file mode 100644
> > index 0000000..b401cec
> > --- /dev/null
> > +++ b/drivers/net/ethernet/sunplus/Makefile
> > @@ -0,0 +1,6 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +#
> > +# Makefile for the Sunplus network device drivers.
> > +#
> > +obj-$(CONFIG_NET_VENDOR_SUNPLUS) += sp_l2sw.o sp_l2sw-objs :=
> > +l2sw_driver.o l2sw_int.o l2sw_hal.o l2sw_desc.o l2sw_mac.o
> > +l2sw_mdio.o
> > diff --git a/drivers/net/ethernet/sunplus/l2sw_define.h
> > b/drivers/net/ethernet/sunplus/l2sw_define.h
> > new file mode 100644
> > index 0000000..c1049c5
> > --- /dev/null
> > +++ b/drivers/net/ethernet/sunplus/l2sw_define.h
> > @@ -0,0 +1,221 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/* Copyright Sunplus Technology Co., Ltd.
> > + * All rights reserved.
> > + */
> > +
> > +#ifndef __L2SW_DEFINE_H__
> > +#define __L2SW_DEFINE_H__
> > +
> > +#include <linux/module.h>
> > +#include <linux/init.h>
> > +#include <linux/sched.h>
> > +#include <linux/kernel.h>
> > +#include <linux/slab.h>
> > +#include <linux/errno.h>
> > +#include <linux/types.h>
> > +#include <linux/interrupt.h>
> > +#include <linux/kdev_t.h>
> > +#include <linux/in.h>
> > +#include <linux/netdevice.h>
> > +#include <linux/etherdevice.h>
> > +#include <linux/ip.h>
> > +#include <linux/tcp.h>
> > +#include <linux/skbuff.h>
> > +#include <linux/ethtool.h>
> > +#include <linux/platform_device.h>
> > +#include <linux/phy.h>
> > +#include <linux/mii.h>
> > +#include <linux/if_vlan.h>
> > +#include <linux/io.h>
> > +#include <linux/dma-mapping.h>
> > +#include <linux/of_address.h>
> > +#include <linux/of_mdio.h>
> > +
> > +#undef pr_fmt
> > +#define pr_fmt(fmt) "[L2SW]" fmt
> > +
> > +//define MAC interrupt status bit
> > +#define MAC_INT_DAISY_MODE_CHG BIT(31)
> > +#define MAC_INT_IP_CHKSUM_ERR BIT(23)
> > +#define MAC_INT_WDOG_TIMER1_EXP BIT(22)
> > +#define MAC_INT_WDOG_TIMER0_EXP BIT(21)
> > +#define MAC_INT_INTRUDER_ALERT BIT(20)
> > +#define MAC_INT_PORT_ST_CHG BIT(19)
> > +#define MAC_INT_BC_STORM BIT(18)
> > +#define MAC_INT_MUST_DROP_LAN BIT(17)
> > +#define MAC_INT_GLOBAL_QUE_FULL BIT(16)
> > +#define MAC_INT_TX_SOC_PAUSE_ON BIT(15)
> > +#define MAC_INT_RX_SOC_QUE_FULL BIT(14)
> > +#define MAC_INT_TX_LAN1_QUE_FULL BIT(9)
> > +#define MAC_INT_TX_LAN0_QUE_FULL BIT(8)
> > +#define MAC_INT_RX_L_DESCF BIT(7)
> > +#define MAC_INT_RX_H_DESCF BIT(6)
> > +#define MAC_INT_RX_DONE_L BIT(5)
> > +#define MAC_INT_RX_DONE_H BIT(4)
> > +#define MAC_INT_TX_DONE_L BIT(3)
> > +#define MAC_INT_TX_DONE_H BIT(2)
> > +#define MAC_INT_TX_DES_ERR BIT(1)
> > +#define MAC_INT_RX_DES_ERR BIT(0)
> > +
> > +#define MAC_INT_RX (MAC_INT_RX_DONE_H |
> MAC_INT_RX_DONE_L | \
> > + MAC_INT_RX_DES_ERR)
> > +#define MAC_INT_TX (MAC_INT_TX_DONE_L |
> MAC_INT_TX_DONE_H | \
> > + MAC_INT_TX_DES_ERR)
> > +#define MAC_INT_MASK_DEF
> (MAC_INT_DAISY_MODE_CHG | MAC_INT_IP_CHKSUM_ERR | \
> > + MAC_INT_WDOG_TIMER1_EXP |
> MAC_INT_WDOG_TIMER0_EXP | \
> > + MAC_INT_INTRUDER_ALERT | MAC_INT_BC_STORM
> | \
> > + MAC_INT_MUST_DROP_LAN |
> MAC_INT_GLOBAL_QUE_FULL | \
> > + MAC_INT_TX_SOC_PAUSE_ON |
> MAC_INT_RX_SOC_QUE_FULL | \
> > + MAC_INT_TX_LAN1_QUE_FULL |
> MAC_INT_TX_LAN0_QUE_FULL | \
> > + MAC_INT_RX_L_DESCF | MAC_INT_RX_H_DESCF)
> > +
> > +/*define port ability*/
> > +#define PORT_ABILITY_LINK_ST_P1 BIT(25)
> > +#define PORT_ABILITY_LINK_ST_P0 BIT(24)
> > +
> > +/*define PHY command bit*/
> > +#define PHY_WT_DATA_MASK 0xffff0000
> > +#define PHY_RD_CMD 0x00004000
> > +#define PHY_WT_CMD 0x00002000
> > +#define PHY_REG_MASK 0x00001f00
> > +#define PHY_ADR_MASK 0x0000001f
> > +
> > +/*define PHY status bit*/
> > +#define PHY_RD_DATA_MASK 0xffff0000
> > +#define PHY_RD_RDY BIT(1)
> > +#define PHY_WT_DONE BIT(0)
> > +
> > +/*define other register bit*/
> > +#define RX_MAX_LEN_MASK 0x00011000
> > +#define ROUTE_MODE_MASK 0x00000060
> > +#define POK_INT_THS_MASK 0x000E0000
> > +#define VLAN_TH_MASK 0x00000007
> > +
> > +/*define tx descriptor bit*/
> > +#define OWN_BIT BIT(31)
> > +#define FS_BIT BIT(25)
> > +#define LS_BIT BIT(24)
> > +#define LEN_MASK 0x000007FF
> > +#define PKTSP_MASK 0x00007000
> > +#define PKTSP_PORT1 0x00001000
> > +#define TO_VLAN_MASK 0x0003F000
> > +#define TO_VLAN_GROUP1 0x00002000
> > +
> > +#define EOR_BIT BIT(31)
> > +
> > +/*define rx descriptor bit*/
> > +#define ERR_CODE (0xf << 26)
> > +#define RX_TCP_UDP_CHKSUM_BIT BIT(23)
> > +#define RX_IP_CHKSUM_BIT BIT(18)
> > +
> > +#define OWC_BIT BIT(31)
> > +#define TXOK_BIT BIT(26)
> > +#define LNKF_BIT BIT(25)
> > +#define BUR_BIT BIT(22)
> > +#define TWDE_BIT BIT(20)
> > +#define CC_MASK 0x000f0000
> > +#define TBE_MASK 0x00070000
> > +
> > +// Address table search
> > +#define MAC_ADDR_LOOKUP_IDLE BIT(2)
> > +#define MAC_SEARCH_NEXT_ADDR BIT(1)
> > +#define MAC_BEGIN_SEARCH_ADDR BIT(0)
> > +
> > +// Address table search
> > +#define MAC_HASK_LOOKUP_ADDR_MASK (0x3ff << 22)
> > +#define MAC_AT_TABLE_END BIT(1)
> > +#define MAC_AT_DATA_READY BIT(0)
> > +
> > +#define MAC_PHY_ADDR 0x01 /* define by
> hardware */
> > +
> > +/*config descriptor*/
> > +#define TX_DESC_NUM 16
> > +#define MAC_GUARD_DESC_NUM 2
> > +#define RX_QUEUE0_DESC_NUM 16
> > +#define RX_QUEUE1_DESC_NUM 16
> > +#define TX_DESC_QUEUE_NUM 1
> > +#define RX_DESC_QUEUE_NUM 2
> > +
> > +#define MAC_TX_BUFF_SIZE 1536
> > +#define MAC_RX_LEN_MAX 2047
> > +
> > +#define DESC_ALIGN_BYTE 32
> > +#define RX_OFFSET 0
> > +#define TX_OFFSET 0
> > +
> > +#define ETHERNET_MAC_ADDR_LEN 6
> > +
> > +struct mac_desc {
> > + u32 cmd1;
> > + u32 cmd2;
> > + u32 addr1;
> > + u32 addr2;
> > +};
> > +
> > +struct skb_info {
> > + struct sk_buff *skb;
> > + u32 mapping;
> > + u32 len;
> > +};
> > +
> > +struct l2sw_common {
> > + struct net_device *net_dev;
> > + struct platform_device *pdev;
> > + int dual_nic;
> > + int sa_learning;
> > +
> > + void *desc_base;
> > + dma_addr_t desc_dma;
> > + s32 desc_size;
> > + struct clk *clk;
> > + struct reset_control *rstc;
> > + int irq;
> > +
> > + struct mac_desc *rx_desc[RX_DESC_QUEUE_NUM];
> > + struct skb_info *rx_skb_info[RX_DESC_QUEUE_NUM];
> > + u32 rx_pos[RX_DESC_QUEUE_NUM];
> > + u32 rx_desc_num[RX_DESC_QUEUE_NUM];
> > + u32 rx_desc_buff_size;
> > +
> > + struct mac_desc *tx_desc;
> > + struct skb_info tx_temp_skb_info[TX_DESC_NUM];
> > + u32 tx_done_pos;
> > + u32 tx_pos;
> > + u32 tx_desc_full;
> > +
> > + struct mii_bus *mii_bus;
> > + struct phy_device *phy_dev;
> > +
> > + struct napi_struct rx_napi;
> > + struct napi_struct tx_napi;
> > +
> > + spinlock_t rx_lock; // spinlock for accessing rx buffer
> > + spinlock_t tx_lock; // spinlock for accessing tx buffer
> > + spinlock_t ioctl_lock; // spinlock for ioctl operations
> > + struct mutex store_mode; // mutex for dynamic mode change
>
> run checkpatch.pl and fix the errors
I ran checkpatch.pl with -f option for all *.c and *.h files, like:
$ checkpatch.pl -f *.c
$ checkpatch.pl -f *.h
I got 0 warnings and 0 errors for all files.
Also, I ran checkpath.pl for patch files, except cover-letter patch, as
shown below:
$ checkpatch.pl 0001*.patch
$ checkpatch.pl 0002*.patch
I got 0 warnings and 0 errors for the 2 patch files. But the second patch
file shows some 'CHECK' items, like
"Unnecessary parentheses around...",
"Macro argument reuse 'N' may be better as'(N)'..."
I am sure the code has no problem.
Do I need to clean 'CHECK' items?
Best regards,