Creates the Cross Core Modem Network Interface (CCMNI) which implements
the wwan_ops for registration with the WWAN framework, CCMNI also
implements the net_device_ops functions used by the network device.
Network device operations include open, close, start transmission, TX
timeout, change MTU, and select queue.
Signed-off-by: Haijun Lio <haijun.liu@xxxxxxxxxxxx>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@xxxxxxxxx>
Signed-off-by: Ricardo Martinez <ricardo.martinez@xxxxxxxxxxxxxxx>
---
drivers/net/wwan/t7xx/Makefile | 1 +
drivers/net/wwan/t7xx/t7xx_modem_ops.c | 11 +-
drivers/net/wwan/t7xx/t7xx_netdev.c | 535 +++++++++++++++++++++++++
drivers/net/wwan/t7xx/t7xx_netdev.h | 56 +++
4 files changed, 602 insertions(+), 1 deletion(-)
create mode 100644 drivers/net/wwan/t7xx/t7xx_netdev.c
create mode 100644 drivers/net/wwan/t7xx/t7xx_netdev.h
diff --git a/drivers/net/wwan/t7xx/Makefile b/drivers/net/wwan/t7xx/Makefile
index a2c97a66dfbe..fcee61e7c4bc 100644
--- a/drivers/net/wwan/t7xx/Makefile
+++ b/drivers/net/wwan/t7xx/Makefile
@@ -18,3 +18,4 @@ mtk_t7xx-y:= t7xx_pci.o \
t7xx_hif_dpmaif.o \
t7xx_hif_dpmaif_tx.o \
t7xx_hif_dpmaif_rx.o \
+ t7xx_netdev.o \
diff --git a/drivers/net/wwan/t7xx/t7xx_modem_ops.c b/drivers/net/wwan/t7xx/t7xx_modem_ops.c
index 8802948fb6ef..ab1faa628702 100644
--- a/drivers/net/wwan/t7xx/t7xx_modem_ops.c
+++ b/drivers/net/wwan/t7xx/t7xx_modem_ops.c
@@ -13,6 +13,7 @@
#include "t7xx_mhccif.h"
#include "t7xx_modem_ops.h"
#include "t7xx_monitor.h"
+#include "t7xx_netdev.h"
#include "t7xx_pci.h"
#include "t7xx_pcie_mac.h"
#include "t7xx_port.h"
@@ -683,10 +684,15 @@ int mtk_md_init(struct mtk_pci_dev *mtk_dev)
if (ret)
goto err_alloc;
- ret = cldma_init(ID_CLDMA1);
+ /* init the data path */
+ ret = ccmni_init(mtk_dev);
if (ret)
goto err_fsm_init;
+ ret = cldma_init(ID_CLDMA1);
+ if (ret)
+ goto err_ccmni_init;
+
ret = port_proxy_init(mtk_dev->md);
if (ret)
goto err_cldma_init;
@@ -701,6 +707,8 @@ int mtk_md_init(struct mtk_pci_dev *mtk_dev)
err_cldma_init:
cldma_exit(ID_CLDMA1);
+err_ccmni_init:
+ ccmni_exit(mtk_dev);
err_fsm_init:
ccci_fsm_uninit();
err_alloc:
@@ -727,6 +735,7 @@ void mtk_md_exit(struct mtk_pci_dev *mtk_dev)
fsm_append_command(fsm_ctl, CCCI_COMMAND_PRE_STOP, 1);
port_proxy_uninit();
cldma_exit(ID_CLDMA1);
+ ccmni_exit(mtk_dev);
ccci_fsm_uninit();
destroy_workqueue(md->handshake_wq);
}
diff --git a/drivers/net/wwan/t7xx/t7xx_netdev.c b/drivers/net/wwan/t7xx/t7xx_netdev.c
new file mode 100644
index 000000000000..542344abafef
--- /dev/null
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.c
@@ -0,0 +1,535 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2021, MediaTek Inc.
+ * Copyright (c) 2021, Intel Corporation.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/ip.h>
+#include <linux/netdevice.h>
+#include <linux/wwan.h>
+
+#include <net/ipv6.h>
+
+#include "t7xx_hif_dpmaif_rx.h"
+#include "t7xx_hif_dpmaif_tx.h"
+#include "t7xx_netdev.h"
+
+#define IP_MUX_SESSION_DEFAULT 0
+#define SBD_PACKET_TYPE_MASK GENMASK(7, 4)
+
+static void ccmni_make_etherframe(struct net_device *dev, void *skb_eth_hdr,
+ u8 *mac_addr, unsigned int packet_type)
+{
+ struct ethhdr *eth_hdr;
+
+ eth_hdr = skb_eth_hdr;
+ memcpy(eth_hdr->h_dest, mac_addr, sizeof(eth_hdr->h_dest));
+ memset(eth_hdr->h_source, 0, sizeof(eth_hdr->h_source));
+
+ if (packet_type == IPV6_VERSION)
+ eth_hdr->h_proto = cpu_to_be16(ETH_P_IPV6);
+ else
+ eth_hdr->h_proto = cpu_to_be16(ETH_P_IP);
+}
+
+static enum txq_type get_txq_type(struct sk_buff *skb)
+{
+ u32 total_len, payload_len, l4_off;
+ bool tcp_syn_fin_rst, is_tcp;
+ struct ipv6hdr *ip6h;
+ struct tcphdr *tcph;
+ struct iphdr *ip4h;
+ u32 packet_type;
+ __be16 frag_off;
+
+ packet_type = skb->data[0] & SBD_PACKET_TYPE_MASK;
+ if (packet_type == IPV6_VERSION) {
+ ip6h = (struct ipv6hdr *)skb->data;
+ total_len = sizeof(struct ipv6hdr) + ntohs(ip6h->payload_len);
+ l4_off = ipv6_skip_exthdr(skb, sizeof(struct ipv6hdr), &ip6h->nexthdr, &frag_off);
+ tcph = (struct tcphdr *)(skb->data + l4_off);
+ is_tcp = ip6h->nexthdr == IPPROTO_TCP;
+ payload_len = total_len - l4_off - (tcph->doff << 2);
+ } else if (packet_type == IPV4_VERSION) {
+ ip4h = (struct iphdr *)skb->data;
+ tcph = (struct tcphdr *)(skb->data + (ip4h->ihl << 2));
+ is_tcp = ip4h->protocol == IPPROTO_TCP;
+ payload_len = ntohs(ip4h->tot_len) - (ip4h->ihl << 2) - (tcph->doff << 2);
+ } else {
+ return TXQ_NORMAL;
+ }
+
+ tcp_syn_fin_rst = tcph->syn || tcph->fin || tcph->rst;
+ if (is_tcp && !payload_len && !tcp_syn_fin_rst)
+ return TXQ_FAST;
+
+ return TXQ_NORMAL;
+}
+
+static u16 ccmni_select_queue(struct net_device *dev, struct sk_buff *skb,
+ struct net_device *sb_dev)
+{
+ struct ccmni_instance *ccmni;
+
+ ccmni = netdev_priv(dev);
+
+ if (ccmni->ctlb->capability & NIC_CAP_DATA_ACK_DVD)
+ return get_txq_type(skb);
+
+ return TXQ_NORMAL;
+}
+
+static int ccmni_open(struct net_device *dev)
+{
+ struct ccmni_instance *ccmni;
+
+ ccmni = wwan_netdev_drvpriv(dev);
+ netif_carrier_on(dev);
+ netif_tx_start_all_queues(dev);
+ atomic_inc(&ccmni->usage);
+ return 0;
+}
+
+static int ccmni_close(struct net_device *dev)
+{
+ struct ccmni_instance *ccmni;
+
+ ccmni = wwan_netdev_drvpriv(dev);
+
+ if (atomic_dec_return(&ccmni->usage) < 0)
+ return -EINVAL;
+
+ netif_carrier_off(dev);
+ netif_tx_disable(dev);
+ return 0;
+}
+
+static int ccmni_send_packet(struct ccmni_instance *ccmni, struct sk_buff *skb, enum txq_type txqt)
+{
+ struct ccmni_ctl_block *ctlb;
+ struct ccci_header *ccci_h;
+ unsigned int ccmni_idx;
+
+ skb_push(skb, sizeof(struct ccci_header));
+ ccci_h = (struct ccci_header *)skb->data;
+ ccci_h->status &= ~HDR_FLD_CHN;
+
+ ccmni_idx = ccmni->index;
+ ccci_h->data[0] = ccmni_idx;
+ ccci_h->data[1] = skb->len;
+ ccci_h->reserved = 0;
+
+ ctlb = ccmni->ctlb;
+ if (dpmaif_tx_send_skb(ctlb->hif_ctrl, txqt, skb)) {
+ skb_pull(skb, sizeof(struct ccci_header));
+ /* we will reserve header again in the next retry */
+ return NETDEV_TX_BUSY;
+ }
+
+ return 0;
+}
+
+static int ccmni_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct ccmni_instance *ccmni;
+ struct ccmni_ctl_block *ctlb;
+ enum txq_type txqt;
+ int skb_len;
+
+ ccmni = wwan_netdev_drvpriv(dev);
+ ctlb = ccmni->ctlb;
+ txqt = TXQ_NORMAL;
+ skb_len = skb->len;
+
+ /* If MTU changed or there is no headroom, drop the packet */
+ if (skb->len > dev->mtu || skb_headroom(skb) < sizeof(struct ccci_header)) {
+ dev_kfree_skb(skb);
+ dev->stats.tx_dropped++;
+ return NETDEV_TX_OK;
+ }
+
+ if (ctlb->capability & NIC_CAP_DATA_ACK_DVD)
+ txqt = get_txq_type(skb);
+
+ if (ccmni_send_packet(ccmni, skb, txqt)) {
+ if (!(ctlb->capability & NIC_CAP_TXBUSY_STOP)) {
+ if ((ccmni->tx_busy_cnt[txqt]++) % 100 == 0)
+ netdev_notice(dev, "[TX]CCMNI:%d busy:pkt=%ld(ack=%d) cnt=%ld\n",
+ ccmni->index, dev->stats.tx_packets,
+ txqt, ccmni->tx_busy_cnt[txqt]);
+ } else {
+ ccmni->tx_busy_cnt[txqt]++;
+ }
+
+ return NETDEV_TX_BUSY;
+ }
+
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb_len;
+ if (ccmni->tx_busy_cnt[txqt] > 10) {
+ netdev_notice(dev, "[TX]CCMNI:%d TX busy:tx_pkt=%ld(ack=%d) retries=%ld\n",
+ ccmni->index, dev->stats.tx_packets,
+ txqt, ccmni->tx_busy_cnt[txqt]);
+ }
+ ccmni->tx_busy_cnt[txqt] = 0;
+
+ return NETDEV_TX_OK;
+}
+
+static int ccmni_change_mtu(struct net_device *dev, int new_mtu)
+{
+ if (new_mtu > CCMNI_MTU_MAX)
+ return -EINVAL;
+
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static void ccmni_tx_timeout(struct net_device *dev, unsigned int __always_unused txqueue)
+{
+ struct ccmni_instance *ccmni;
+
+ ccmni = (struct ccmni_instance *)netdev_priv(dev);
+ dev->stats.tx_errors++;
+ if (atomic_read(&ccmni->usage) > 0)
+ netif_tx_wake_all_queues(dev);
+}
+
+static const struct net_device_ops ccmni_netdev_ops = {
+ .ndo_open = ccmni_open,
+ .ndo_stop = ccmni_close,
+ .ndo_start_xmit = ccmni_start_xmit,
+ .ndo_tx_timeout = ccmni_tx_timeout,
+ .ndo_change_mtu = ccmni_change_mtu,
+ .ndo_select_queue = ccmni_select_queue,
+};
+
+static void ccmni_start(struct ccmni_ctl_block *ctlb)
+{
+ struct ccmni_instance *ccmni;
+ int i;
+
+ /* carry on the net link */
+ for (i = 0; i < ctlb->nic_dev_num; i++) {
+ ccmni = ctlb->ccmni_inst[i];
+ if (!ccmni)
+ continue;
+
+ if (atomic_read(&ccmni->usage) > 0) {
+ netif_tx_start_all_queues(ccmni->dev);
+ netif_carrier_on(ccmni->dev);
+ }
+ }
+}
+
+static void ccmni_pre_stop(struct ccmni_ctl_block *ctlb)
+{
+ struct ccmni_instance *ccmni;
+ int i;
+
+ /* stop tx */
+ for (i = 0; i < ctlb->nic_dev_num; i++) {
+ ccmni = ctlb->ccmni_inst[i];
+ if (!ccmni)
+ continue;
+
+ if (atomic_read(&ccmni->usage) > 0)
+ netif_tx_disable(ccmni->dev);
+ }
+}
+
+static void ccmni_pos_stop(struct ccmni_ctl_block *ctlb)
+{
+ struct ccmni_instance *ccmni;
+ int i;
+
+ /* carry off the net link */
+ for (i = 0; i < ctlb->nic_dev_num; i++) {
+ ccmni = ctlb->ccmni_inst[i];
+ if (!ccmni)
+ continue;
+
+ if (atomic_read(&ccmni->usage) > 0)
+ netif_carrier_off(ccmni->dev);
+ }
+}
+
+static void ccmni_wwan_setup(struct net_device *dev)
+{
+ dev->header_ops = NULL;
+ dev->hard_header_len += sizeof(struct ccci_header);
+
+ dev->mtu = WWAN_DEFAULT_MTU;
+ dev->max_mtu = CCMNI_MTU_MAX;
+ dev->tx_queue_len = CCMNI_TX_QUEUE;
+ dev->watchdog_timeo = CCMNI_NETDEV_WDT_TO;
+ /* ccmni is a pure IP device */
+ dev->flags = (IFF_POINTOPOINT | IFF_NOARP)
+ & ~(IFF_BROADCAST | IFF_MULTICAST);
+
+ /* not supporting VLAN */
+ dev->features = NETIF_F_VLAN_CHALLENGED;
+
+ dev->features |= NETIF_F_SG;
+ dev->hw_features |= NETIF_F_SG;
+
+ /* uplink checksum offload */
+ dev->features |= NETIF_F_HW_CSUM;
+ dev->hw_features |= NETIF_F_HW_CSUM;
+
+ /* downlink checksum offload */
+ dev->features |= NETIF_F_RXCSUM;
+ dev->hw_features |= NETIF_F_RXCSUM;
+
+ dev->addr_len = ETH_ALEN;
+
+ /* use kernel default free_netdev() function */
+ dev->needs_free_netdev = true;
+
+ /* no need to free again because of free_netdev() */
+ dev->priv_destructor = NULL;
+ dev->type = ARPHRD_PPP;
+
+ dev->netdev_ops = &ccmni_netdev_ops;
+ random_ether_addr((u8 *)dev->dev_addr);
+}
+
+static int ccmni_wwan_newlink(void *ctxt, struct net_device *dev, u32 if_id,
+ struct netlink_ext_ack *extack)
+{
+ struct ccmni_ctl_block *ctlb;
+ struct ccmni_instance *ccmni;
+ int ret;
+
+ ctlb = ctxt;
+
+ if (if_id >= ARRAY_SIZE(ctlb->ccmni_inst))
+ return -EINVAL;
+
+ /* initialize private structure of netdev */
+ ccmni = wwan_netdev_drvpriv(dev);
+ ccmni->index = if_id;
+ ccmni->ctlb = ctlb;
+ ccmni->dev = dev;
+ atomic_set(&ccmni->usage, 0);
+ ctlb->ccmni_inst[if_id] = ccmni;
+
+ ret = register_netdevice(dev);
+ if (ret)
+ return ret;
+
+ netif_device_attach(dev);
+ return 0;
+}
+
+static void ccmni_wwan_dellink(void *ctxt, struct net_device *dev, struct list_head *head)
+{
+ struct ccmni_instance *ccmni;
+ struct ccmni_ctl_block *ctlb;
+ int if_id;
+
+ ccmni = wwan_netdev_drvpriv(dev);
+ ctlb = ctxt;
+ if_id = ccmni->index;
+
+ if (if_id >= ARRAY_SIZE(ctlb->ccmni_inst))
+ return;
+
+ if (WARN_ON(ctlb->ccmni_inst[if_id] != ccmni))
+ return;
+
+ unregister_netdevice(dev);
+}
+
+static const struct wwan_ops ccmni_wwan_ops = {
+ .priv_size = sizeof(struct ccmni_instance),
+ .setup = ccmni_wwan_setup,
+ .newlink = ccmni_wwan_newlink,
+ .dellink = ccmni_wwan_dellink,
+};
+
+static int ccmni_md_state_callback(enum md_state state, void *para)
+{
+ struct ccmni_ctl_block *ctlb;
+ int ret = 0;
+
+ ctlb = para;
+ ctlb->md_sta = state;
+
+ switch (state) {
+ case MD_STATE_READY:
+ ccmni_start(ctlb);
+ break;
+
+ case MD_STATE_EXCEPTION:
+ case MD_STATE_STOPPED:
+ ccmni_pre_stop(ctlb);
+ ret = dpmaif_md_state_callback(ctlb->hif_ctrl, state);
+ if (ret < 0)
+ dev_err(ctlb->hif_ctrl->dev,
+ "dpmaif md state callback err, md_sta=%d\n", state);
+
+ ccmni_pos_stop(ctlb);
+ break;
+
+ case MD_STATE_WAITING_FOR_HS1:
+ case MD_STATE_WAITING_TO_STOP:
+ ret = dpmaif_md_state_callback(ctlb->hif_ctrl, state);
+ if (ret < 0)
+ dev_err(ctlb->hif_ctrl->dev,
+ "dpmaif md state callback err, md_sta=%d\n", state);
+ break;
+
+ default:
+ break;
+ }
+
+ return ret;
+}
+
+static void init_md_status_notifier(struct ccmni_ctl_block *ctlb)
+{
+ struct fsm_notifier_block *md_status_notifier;
+
+ md_status_notifier = &ctlb->md_status_notify;
+ INIT_LIST_HEAD(&md_status_notifier->entry);
+ md_status_notifier->notifier_fn = ccmni_md_state_callback;
+ md_status_notifier->data = ctlb;
+
+ fsm_notifier_register(md_status_notifier);
+}
+
+static void ccmni_recv_skb(struct mtk_pci_dev *mtk_dev, int netif_id, struct sk_buff *skb)
+{
+ struct ccmni_instance *ccmni;
+ struct net_device *dev;
+ int pkt_type, skb_len;
+
+ ccmni = mtk_dev->ccmni_ctlb->ccmni_inst[netif_id];
+ if (!ccmni) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ dev = ccmni->dev;
+
+ pkt_type = skb->data[0] & SBD_PACKET_TYPE_MASK;
+ ccmni_make_etherframe(dev, skb->data - ETH_HLEN, dev->dev_addr, pkt_type);
+ skb_set_mac_header(skb, -ETH_HLEN);
+ skb_reset_network_header(skb);
+ skb->dev = dev;
+ if (pkt_type == IPV6_VERSION)
+ skb->protocol = htons(ETH_P_IPV6);
+ else
+ skb->protocol = htons(ETH_P_IP);
+
+ skb_len = skb->len;
+
+ netif_rx_any_context(skb);
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += skb_len;
+}
+
+static void ccmni_queue_tx_irq_notify(struct ccmni_ctl_block *ctlb, int qno)
+{
+ struct netdev_queue *net_queue;
+ struct ccmni_instance *ccmni;
+
+ ccmni = ctlb->ccmni_inst[0];
+
+ if (netif_running(ccmni->dev) && atomic_read(&ccmni->usage) > 0) {
+ if (ctlb->capability & NIC_CAP_CCMNI_MQ) {
+ net_queue = netdev_get_tx_queue(ccmni->dev, qno);
+ if (netif_tx_queue_stopped(net_queue))
+ netif_tx_wake_queue(net_queue);
+ } else if (netif_queue_stopped(ccmni->dev)) {
+ netif_wake_queue(ccmni->dev);
+ }
+ }
+}
+
+static void ccmni_queue_tx_full_notify(struct ccmni_ctl_block *ctlb, int qno)
+{
+ struct netdev_queue *net_queue;
+ struct ccmni_instance *ccmni;
+
+ ccmni = ctlb->ccmni_inst[0];
+
+ if (atomic_read(&ccmni->usage) > 0) {
+ dev_err(&ctlb->mtk_dev->pdev->dev, "TX queue %d is full\n", qno);
+ if (ctlb->capability & NIC_CAP_CCMNI_MQ) {
+ net_queue = netdev_get_tx_queue(ccmni->dev, qno);
+ netif_tx_stop_queue(net_queue);
+ } else {
+ netif_stop_queue(ccmni->dev);
+ }
+ }
+}
+
+static void ccmni_queue_state_notify(struct mtk_pci_dev *mtk_dev,
+ enum dpmaif_txq_state state, int qno)
+{
+ if (!(mtk_dev->ccmni_ctlb->capability & NIC_CAP_TXBUSY_STOP) ||
+ mtk_dev->ccmni_ctlb->md_sta != MD_STATE_READY ||
+ qno >= TXQ_TYPE_CNT)
+ return;
+
+ if (!mtk_dev->ccmni_ctlb->ccmni_inst[0]) {
+ dev_warn(&mtk_dev->pdev->dev, "No netdev registered yet\n");
+ return;
+ }
+
+ if (state == DMPAIF_TXQ_STATE_IRQ)
+ ccmni_queue_tx_irq_notify(mtk_dev->ccmni_ctlb, qno);
+ else if (state == DMPAIF_TXQ_STATE_FULL)
+ ccmni_queue_tx_full_notify(mtk_dev->ccmni_ctlb, qno);
+}
+
+int ccmni_init(struct mtk_pci_dev *mtk_dev)
+{
+ struct ccmni_ctl_block *ctlb;
+ int ret;
+
+ ctlb = devm_kzalloc(&mtk_dev->pdev->dev, sizeof(*ctlb), GFP_KERNEL);
+ if (!ctlb)
+ return -ENOMEM;
+
+ mtk_dev->ccmni_ctlb = ctlb;
+ ctlb->mtk_dev = mtk_dev;
+ ctlb->callbacks.state_notify = ccmni_queue_state_notify;
+ ctlb->callbacks.recv_skb = ccmni_recv_skb;
+ ctlb->nic_dev_num = NIC_DEV_DEFAULT;
+ ctlb->capability = NIC_CAP_TXBUSY_STOP | NIC_CAP_SGIO |
+ NIC_CAP_DATA_ACK_DVD | NIC_CAP_CCMNI_MQ;
+
+ ctlb->hif_ctrl = dpmaif_hif_init(mtk_dev, &ctlb->callbacks);
+ if (!ctlb->hif_ctrl)
+ return -ENOMEM;
+
+ /* WWAN core will create a netdev for the default IP MUX channel */
+ ret = wwan_register_ops(&ctlb->mtk_dev->pdev->dev, &ccmni_wwan_ops, ctlb,
+ IP_MUX_SESSION_DEFAULT);
+ if (ret)
+ goto error_md;
+
+ init_md_status_notifier(ctlb);
+
+ return 0;
+
+error_md:
+ wwan_unregister_ops(&ctlb->mtk_dev->pdev->dev);
+
+ return ret;
+}
+
+void ccmni_exit(struct mtk_pci_dev *mtk_dev)
+{
+ struct ccmni_ctl_block *ctlb;
+
+ ctlb = mtk_dev->ccmni_ctlb;
+ /* unregister FSM notifier */
+ fsm_notifier_unregister(&ctlb->md_status_notify);
+ wwan_unregister_ops(&ctlb->mtk_dev->pdev->dev);
+ dpmaif_hif_exit(ctlb->hif_ctrl);
+}
diff --git a/drivers/net/wwan/t7xx/t7xx_netdev.h b/drivers/net/wwan/t7xx/t7xx_netdev.h
new file mode 100644
index 000000000000..4346b279a0cf
--- /dev/null
+++ b/drivers/net/wwan/t7xx/t7xx_netdev.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (c) 2021, MediaTek Inc.
+ * Copyright (c) 2021, Intel Corporation.
+ */
+
+#ifndef __T7XX_NETDEV_H__
+#define __T7XX_NETDEV_H__
+
+#include <linux/bitfield.h>
+#include <linux/netdevice.h>
+
+#include "t7xx_common.h"
+#include "t7xx_hif_dpmaif.h"
+#include "t7xx_monitor.h"
+
+#define RXQ_NUM DPMAIF_RXQ_NUM
+#define NIC_DEV_MAX 21
+#define NIC_DEV_DEFAULT 2
+#define NIC_CAP_TXBUSY_STOP BIT(0)
+#define NIC_CAP_SGIO BIT(1)
+#define NIC_CAP_DATA_ACK_DVD BIT(2)
+#define NIC_CAP_CCMNI_MQ BIT(3)
+
+/* must be less than DPMAIF_HW_MTU_SIZE (3*1024 + 8) */
+#define CCMNI_MTU_MAX 3000
+#define CCMNI_TX_QUEUE 1000
+#define CCMNI_NETDEV_WDT_TO (1 * HZ)
+
+#define IPV4_VERSION 0x40
+#define IPV6_VERSION 0x60
+
+struct ccmni_instance {
+ unsigned int index;
+ atomic_t usage;
+ struct net_device *dev;
+ struct ccmni_ctl_block *ctlb;
+ unsigned long tx_busy_cnt[TXQ_TYPE_CNT];
+};
+
+struct ccmni_ctl_block {
+ struct mtk_pci_dev *mtk_dev;
+ struct dpmaif_ctrl *hif_ctrl;
+ struct ccmni_instance *ccmni_inst[NIC_DEV_MAX];
+ struct dpmaif_callbacks callbacks;
+ unsigned int nic_dev_num;
+ unsigned int md_sta;
+ unsigned int capability;
+
+ struct fsm_notifier_block md_status_notify;
+};
+
+int ccmni_init(struct mtk_pci_dev *mtk_dev);
+void ccmni_exit(struct mtk_pci_dev *mtk_dev);
+
+#endif /* __T7XX_NETDEV_H__ */
--
2.17.1
