Huawei BMA: Adding Huawei BMA driver: host_veth_drv

driver inclusion
category: feature
bugzilla: 34535
CVE: NA

The BMA software is a system management software offered by Huawei. It supports
the status monitoring, performance monitoring, and event monitoring of various
components, including server CPUs, memory, hard disks, NICs, IB cards, PCIe
cards, RAID controller cards, and optical modules.

This host_veth_drv driver is one of the communication drivers used by BMA
software. It depends on the host_edma_drv driver. The host_veth_drv driver will
create a virtual net device "veth" once loaded. BMA software will use it to
send/receive RESTful messages to/from BMC software.

Link: https://lkml.org/lkml/2020/6/22/752Signed-off-by: NNaixin Yu <yunaixin@huawei.com>
Reviewed-by: NWang Qindong <wangqindong@huawei.com>
Acked-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>

drivers/net/ethernet/huawei/bma/Makefile

@@ -3,4 +3,5 @@
 #
 
 obj-$(CONFIG_BMA) += edma_drv/
-obj-$(CONFIG_BMA) += cdev_drv/
+obj-$(CONFIG_BMA) += cdev_drv/
\ No newline at end of file
+obj-$(CONFIG_BMA) += veth_drv/
\ No newline at end of file

drivers/net/ethernet/huawei/bma/veth_drv/Makefile

+obj-$(CONFIG_BMA) += host_veth_drv.o
+host_veth_drv-y := veth_hb.o
\ No newline at end of file

drivers/net/ethernet/huawei/bma/veth_drv/veth_hb.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*Huawei iBMA driver.
+ *Copyright (c) 2017, Huawei Technologies Co., Ltd.
+ *
+ *This program is free software; you can redistribute it and/or
+ *modify it under the terms of the GNU General Public License
+ *as published by the Free Software Foundation; either version 2
+ *of the License, or (at your option) any later version.
+ *
+ *This program is distributed in the hope that it will be useful,
+ *but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *GNU General Public License for more details.
+ *
+ */
+
+#ifndef _VETH_HB_H_
+#define _VETH_HB_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <linux/interrupt.h>
+
+#define DEP_BMA
+
+#include "../edma_drv/bma_include.h"
+#include "../include/bma_ker_intf.h"
+
+#ifdef DRV_VERSION
+#define VETH_VERSION	MICRO_TO_STR(DRV_VERSION)
+#else
+#define VETH_VERSION	"0.3.4"
+#endif
+
+#define MODULE_NAME	"veth"
+#define BSP_VETH_T	u64
+
+#define BSP_OK				(0)
+#define BSP_ERR				(0xFFFFFFFF)
+#define BSP_NETDEV_TX_BUSY		(1)
+#define BSP_ERR_INIT_ERR		(BSP_NETDEV_TX_BUSY)
+#define BSP_ETH_ERR_BASE		(0x0FFFF000)
+#define BSP_ERR_OUT_OF_MEM		(BSP_ETH_ERR_BASE + 1)
+#define BSP_ERR_NULL_POINTER		(BSP_ETH_ERR_BASE + 2)
+#define BSP_ERR_INVALID_STR		(BSP_ETH_ERR_BASE + 3)
+#define BSP_ERR_INVALID_PARAM		(BSP_ETH_ERR_BASE + 4)
+#define BSP_ERR_INVALID_DATA		(BSP_ETH_ERR_BASE + 5)
+#define BSP_ERR_OUT_OF_RANGE		(BSP_ETH_ERR_BASE + 6)
+#define BSP_ERR_INVALID_CARD		(BSP_ETH_ERR_BASE + 7)
+#define BSP_ERR_INVALID_GRP		(BSP_ETH_ERR_BASE + 8)
+#define BSP_ERR_INVALID_ETH		(BSP_ETH_ERR_BASE + 9)
+#define BSP_ERR_SEND_ERR		(BSP_ETH_ERR_BASE + 10)
+#define BSP_ERR_DMA_ERR			(BSP_ETH_ERR_BASE + 11)
+#define BSP_ERR_RECV_ERR		(BSP_ETH_ERR_BASE + 12)
+#define BSP_ERR_SKB_ERR			(BSP_ETH_ERR_BASE + 13)
+#define BSP_ERR_DMA_ADDR_ERR		(BSP_ETH_ERR_BASE + 14)
+#define BSP_ERR_IOREMAP_ERR		(BSP_ETH_ERR_BASE + 15)
+#define BSP_ERR_LEN_ERR			(BSP_ETH_ERR_BASE + 16)
+#define BSP_ERR_STAT_ERR		(BSP_ETH_ERR_BASE + 17)
+#define BSP_ERR_AGAIN			(BSP_ETH_ERR_BASE + 18)
+#define BSP_ERR_NOT_TO_HANDLE		(BSP_ETH_ERR_BASE + 19)
+
+#define VETH_H2B_IRQ_NO			(113)
+#define SYSCTL_REG_BASE			(0x20000000)
+#define SYSCTL_REG_SIZE			(0x1000)
+#define PCIE1_REG_BASE			(0x29000000)
+#define PCIE1_REG_SIZE			(0x1000)
+#define VETH_SHAREPOOL_BASE_INBMC	(0x84820000)
+#define VETH_SHAREPOOL_SIZE		(0xdf000)
+#define VETH_SHAREPOOL_OFFSET		(0x10000)
+#define MAX_SHAREQUEUE_SIZE		(0x20000)
+
+#define BSPVETH_SHMBDBASE_OFFSET	(0x80)
+#define SHMDMAL_OFFSET			(0x10000)
+#define MAX_SHMDMAL_SIZE		(BSPVETH_DMABURST_MAX * 32)
+
+#define BSPVETH_DMABURST_MAX		64
+#define BSPVETH_SKBTIMER_INTERVAL	(1)
+#define BSPVETH_DMATIMER_INTERVAL	(1)
+#define BSPVETH_CTLTIMER_INTERVAL	(10)
+#define BSPVETH_HDCMD_CHKTIMER_INTERVAL	(10)
+#define BSP_DMA_64BIT_MASK		(0xffffffffffffffffULL)
+#define BSP_DMA_32BIT_MASK		(0x00000000ffffffffULL)
+#define HOSTRTC_REG_BASE		(0x2f000000)
+#define HOSTRTC_REG_SIZE		(0x10000)
+#define REG_SYSCTL_HOSTINT_CLEAR	(0x44)
+#define SHIFT_SYSCTL_HOSTINT_CLEAR	(22)
+#define REG_SYSCTL_HOSTINT		(0xf4)
+#define SHIFT_SYSCTL_HOSTINT		(26)
+
+#define NET_TYPE_LEN			(16)
+
+#define MAX_QUEUE_NUM			(1)
+#define MAX_QUEUE_BDNUM			(128)
+#define BSPVETH_MAX_QUE_DEEP		(MAX_QUEUE_BDNUM)
+#define BSPVETH_POINT_MASK		(MAX_QUEUE_BDNUM - 1)
+#define BSPVETH_WORK_LIMIT		(64)
+#define BSPVETH_CHECK_DMA_STATUS_TIMES	(120)
+
+#define REG_PCIE1_DMAREAD_ENABLE	(0xa18)
+#define SHIFT_PCIE1_DMAREAD_ENABLE	(0)
+#define REG_PCIE1_DMAWRITE_ENABLE	(0x9c4)
+#define SHIFT_PCIE1_DMAWRITE_ENABLE	(0)
+#define REG_PCIE1_DMAREAD_STATUS	(0xa10)
+#define SHIFT_PCIE1_DMAREAD_STATUS	(0)
+#define REG_PCIE1_DMAREADINT_CLEAR	(0xa1c)
+#define SHIFT_PCIE1_DMAREADINT_CLEAR	(0)
+#define REG_PCIE1_DMAWRITE_STATUS	(0x9bc)
+#define SHIFT_PCIE1_DMAWRITE_STATUS	(0)
+#define REG_PCIE1_DMAWRITEINT_CLEAR	(0x9c8)
+#define SHIFT_PCIE1_DMAWRITEINT_CLEAR	(0)
+
+#define BSPVETH_DMA_OK			(1)
+#define BSPVETH_DMA_BUSY		(0)
+#define BSPVETH_RX			(2)
+#define BSPVETH_TX			(3)
+#define HOSTRTC_INT_OFFSET		(0x10)
+#define BSPVETH_DEV_NAME		(MODULE_NAME)
+#define NET_NAME_LEN			(64)
+
+#ifdef PCI_VENDOR_ID_HUAWEI
+#undef PCI_VENDOR_ID_HUAWEI
+#endif
+#define PCI_VENDOR_ID_HUAWEI		(0x19e5)
+
+#define PCI_DEVICE_ID_KBOX		(0x1710)
+#define BSPVETH_MTU_MAX			(1500)
+#define BSPVETH_MTU_MIN			(64)
+#define BSPVETH_SKB_SIZE		(1536)
+#define BSPVETH_NET_TIMEOUT		(5 * HZ)
+#define BSPVETH_QUEUE_TIMEOUT_10MS	(100)
+#define BSPVETH_SHMQUEUE_INITOK		(0x12)
+#define BSPVETH_LBK_TYPE		(0x800)
+
+#ifndef VETH_BMC
+#define BSPVETH_CACHELINE_SIZE		(64)
+#else
+#define BSPVETH_CACHELINE_SIZE		(32)
+#endif
+#define BSPVETH_HBCMD_WCMP		(0x44)
+#define BSPVETH_HBCMD_CMP		(0x55)
+#define BSPVETH_HBCMD_OK		(0x66)
+#define BSPVETH_HEART_WACK		(0x99)
+#define BSPVETH_HEART_ACK		(0xaa)
+
+#define BSPVETH_HBCMD_TIMEOUT		(1000)
+
+#define SIZE_OF_UNSIGNED_LONG 8
+#define ADDR_H_SHIFT 32
+#define REGION_HOST 1
+#define REGION_BMC 2
+
+enum veth_hb_cmd {
+	VETH_HBCMD_UNKNOWN = 0x0,
+	VETH_HBCMD_SETIP,
+
+	VETH_HBCMD_MAX,
+};
+
+#define USE_TASKLET
+
+#define BSPVETH_ETHTOOL_BASE		0x89F0
+#define BSPVETH_ETHTOOL_TESTINT		(BSPVETH_ETHTOOL_BASE + 1)
+#define BSPVETH_ETHTOOL_TESTSHAREMEM	(BSPVETH_ETHTOOL_BASE + 2)
+#define BSPVETH_ETHTOOL_DUMPSHAREMEM	(BSPVETH_ETHTOOL_BASE + 3)
+#define BSPVETH_ETHTOOL_TESTDMA		(BSPVETH_ETHTOOL_BASE + 4)
+#define BSPVETH_ETHTOOL_RWPCIEREG	(BSPVETH_ETHTOOL_BASE + 5)
+#define BSPVETH_ETHTOOL_TESTLBK		(BSPVETH_ETHTOOL_BASE + 6)
+#define BSPVETH_ETHTOOL_INITSTATIS	(BSPVETH_ETHTOOL_BASE + 7)
+#define BSPVETH_HBCMD			(BSPVETH_ETHTOOL_BASE + 8)
+
+struct bspveth_test {
+	u32 intdirect;	/*0--H2B,1--B2H*/
+	u32 rwshmcheck;	/*0--w,1--r and check*/
+	u32 dshmbase;
+	u32 dshmlen;
+	u32 testdma;	/*0--disable,1---enable*/
+	u32 pcierw;	/*0--w,1---r*/
+	u32 reg;
+	u32 data;
+	u32 testlbk;	/*0--disable,1---enable*/
+};
+
+struct bspveth_hdcmd {
+	u32 cmd;
+	u32 stat;
+	u32 heart;
+	u32 err;
+	u32 sequence;
+	u32 len;
+	u8 data[256];
+};
+
+struct bspveth_rxtx_statis {
+	u64 pkt;
+	u64 pktbyte;
+	u64 refill;
+	u64 freetx;
+	u64 dmapkt;
+	u64 dmapktbyte;
+
+	u32 dropped_pkt;
+	u32 netifrx_err;
+	u32 null_point;
+	u32 retry_err;
+	u32 dma_mapping_err;
+	u32 allocskb_err;
+	u32 q_full;
+	u32 q_emp;
+	u32 shm_full;
+	u32 shm_emp;
+	u32 dma_busy;
+	u32 need_fill;
+	u32 need_free;
+	u32 dmacmp_err;
+	u32 type_err;
+	u32 shmqueue_noinit;
+	u32 shmretry_err;
+	u32 dma_earlyint;
+	u32 clr_dma_earlyint;
+	u32 clr_dma_int;
+	u32 dmarx_shmaddr_unalign;
+	u32 dmarx_hostaddr_unalign;
+	u32 dmatx_shmaddr_unalign;
+	u32 dmatx_hostaddr_unalign;
+	u32 dma_need_offset;
+	u32 lastdmadir_err;
+	u32 dma_failed;
+	u32 dma_burst;
+	u32 lbk_cnt;
+	u32 lbk_txerr;
+};
+
+struct bspveth_bd_info {
+	struct sk_buff *pdma_v;
+	u32 len;
+	unsigned long time_stamp;
+};
+
+struct bspveth_dma_shmbd {
+	u32 dma_p;
+	u32 len;
+	u32 off;
+};
+
+struct bspveth_shmq_hd {
+	u32 count;
+	u32 size;	/*count x sizeof(dmaBD)*/
+	u32 next_to_fill;
+	u32 next_to_free;
+	u32 head;
+	u32 tail;
+	u16 init;	/*  1--ok,0--nok*/
+};
+
+struct bspveth_dma_bd {
+	u64 dma_p;
+	u32 len;
+	u32 off;
+};
+
+struct bspveth_dmal {
+	u32 chl;
+	u32 len;
+	u32 slow;
+	u32 shi;
+	u32 dlow;
+	u32 dhi;
+};
+
+struct bspveth_rxtx_q {
+#ifndef VETH_BMC
+	struct bspveth_dma_bd *pbdbase_v;
+	u8 *pbdbase_p;
+#endif
+
+	struct bspveth_bd_info *pbdinfobase_v;
+	struct bspveth_shmq_hd *pshmqhd_v;
+	u8 *pshmqhd_p;
+
+	struct bspveth_dma_shmbd *pshmbdbase_v;
+	u8 *pshmbdbase_p;
+
+	struct bspveth_dmal *pdmalbase_v;
+	u8 *pdmalbase_p;
+
+	u32 dmal_cnt;
+	u32 dmal_byte;
+
+	u32 count;
+	u32 size;
+	u32 rx_buf_len;
+
+	u32 next_to_fill;
+	u32 next_to_free;
+	u32 head;
+	u32 tail;
+	u16 start_dma;
+	u16 dmacmperr;
+
+	u16 dma_overtime;
+
+	u32 work_limit;
+	struct bspveth_rxtx_statis s;
+};
+
+struct bspveth_device {
+	struct bspveth_rxtx_q *ptx_queue[MAX_QUEUE_NUM];
+	struct bspveth_rxtx_q *prx_queue[MAX_QUEUE_NUM];
+	struct net_device *pnetdev;
+	char name[NET_NAME_LEN];
+
+	struct pci_dev *ppcidev;
+	u8 *phostrtc_p;
+	u8 *phostrtc_v;
+
+	u8 *psysctl_v;
+	u8 *ppcie1_v;
+
+	u8 *pshmpool_p;
+	u8 *pshmpool_v;
+	u32 shmpoolsize;
+
+	u32 recv_int;
+	u32 tobmc_int;
+	u32 tohost_int;
+	u32 run_dma_tx_task;
+	u32 run_dma_rx_task;
+	u32 run_skb_rx_task;
+	u32 run_skb_fr_task;
+	u32 shutdown_cnt;
+	__kernel_time_t init_time;
+
+	/* spinlock for register */
+	spinlock_t reg_lock;
+#ifndef USE_TASKLET
+	struct timer_list skbtrtimer;
+	struct timer_list dmatimer;
+#else
+	struct tasklet_struct skb_task;
+	struct tasklet_struct dma_task;
+#endif
+
+	struct net_device_stats stats;
+	struct work_struct shutdown_task;
+#ifdef DEP_BMA
+	struct bma_priv_data_s *bma_priv;
+#else
+	void *edma_priv;
+#endif
+};
+
+struct tag_pcie_comm_priv {
+	char net_type[NET_TYPE_LEN];
+	struct net_device_stats stats;
+	int status;
+	int irq_enable;
+	int pcie_comm_rx_flag;
+	spinlock_t lock; /* spinlock for priv data */
+};
+
+#define QUEUE_MASK(p)		((p) & (BSPVETH_POINT_MASK))
+
+#define CHECK_ADDR_ALIGN(addr, statis)\
+do {                         \
+	if ((addr) & 0x3) \
+		statis;\
+} while (0)
+
+#define PROC_P_STATIS(name, statis)\
+	PROC_DPRINTK("[%10s]:\t0x%llx", #name, statis)
+
+#define  INC_STATIS_RXTX(queue, name, count, type) \
+do {                 \
+	if (type == BSPVETH_RX)\
+		g_bspveth_dev.prx_queue[queue]->s.name += count;\
+	else\
+		g_bspveth_dev.ptx_queue[queue]->s.name += count;\
+} while (0)
+
+#define PROC_DPRINTK(fmt, args...) (len += sprintf(buf + len, fmt, ##args))
+
+#define JUDGE_TX_QUEUE_SPACE(head, tail, len) \
+	(((BSPVETH_MAX_QUE_DEEP + (tail) - (head) - 1) \
+	    & BSPVETH_POINT_MASK) >= (len))
+
+#define JUDGE_RX_QUEUE_SPACE(head, tail, len) \
+	(((BSPVETH_MAX_QUE_DEEP + (tail) - (head)) \
+	    & BSPVETH_POINT_MASK) > (len))
+
+#ifndef VETH_BMC
+#define BSPVETH_UNMAP_DMA(data, len) \
+	dma_unmap_single(&g_bspveth_dev.ppcidev->dev, \
+			 data, len, DMA_FROM_DEVICE)
+#else
+#define BSPVETH_UNMAP_DMA(data, len) \
+	dma_unmap_single(NULL, data, len, DMA_FROM_DEVICE)
+#endif
+
+int veth_tx(struct sk_buff *pstr_skb, struct net_device *pstr_dev);
+int veth_dma_task_H(u32 type);
+s32 veth_skbtimer_close(void);
+void veth_skbtimer_init(void);
+s32 veth_dmatimer_close_H(void);
+void veth_dmatimer_init_H(void);
+int veth_skb_tr_task(void);
+
+s32 __dma_rxtx_H(struct bspveth_rxtx_q *prxtx_queue, u32 queue, u32 type);
+s32 veth_recv_pkt(struct bspveth_rxtx_q *prx_queue, int queue);
+s32 veth_free_txskb(struct bspveth_rxtx_q *ptx_queue, int queue);
+
+enum {
+	QUEUE_TX_STATS,
+	QUEUE_RX_STATS,
+	VETH_STATS,
+	SHMQ_TX_STATS,
+	SHMQ_RX_STATS,
+	NET_STATS,
+};
+
+struct veth_stats {
+	char stat_string[ETH_GSTRING_LEN];
+	int type;
+	int sizeof_stat;
+	int stat_offset;
+};
+
+#define VETH_STAT_SIZE(m)	sizeof(((struct bspveth_device *)0)->m)
+#define VETH_STAT_OFFSET(m)	offsetof(struct bspveth_device, m)
+#define QUEUE_TXRX_STAT_SIZE(m)	sizeof(((struct bspveth_rxtx_q *)0)->m)
+#define QUEUE_TXRX_STAT_OFFSET(m)	offsetof(struct bspveth_rxtx_q, m)
+#define SHMQ_TXRX_STAT_SIZE(m)	sizeof(((struct bspveth_shmq_hd *)0)->m)
+#define SHMQ_TXRX_STAT_OFFSET(m)	offsetof(struct bspveth_shmq_hd, m)
+
+#ifdef __cplusplus
+}
+#endif
+#endif