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authorLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
committerLibravatar Linus Torvalds <torvalds@linux-foundation.org>2023-02-21 18:24:12 -0800
commit5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 (patch)
treecc5c2d0a898769fd59549594fedb3ee6f84e59a0 /drivers/net/ethernet/sunplus/spl2sw_mac.c
downloadlinux-5b7c4cabbb65f5c469464da6c5f614cbd7f730f2.tar.gz
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Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted
Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
Diffstat (limited to 'drivers/net/ethernet/sunplus/spl2sw_mac.c')
-rw-r--r--drivers/net/ethernet/sunplus/spl2sw_mac.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sunplus/spl2sw_mac.c b/drivers/net/ethernet/sunplus/spl2sw_mac.c
new file mode 100644
index 000000000..57e431dfc
--- /dev/null
+++ b/drivers/net/ethernet/sunplus/spl2sw_mac.c
@@ -0,0 +1,274 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Sunplus Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/netdevice.h>
+#include <linux/bitfield.h>
+#include <linux/of_mdio.h>
+
+#include "spl2sw_register.h"
+#include "spl2sw_define.h"
+#include "spl2sw_desc.h"
+#include "spl2sw_mac.h"
+
+void spl2sw_mac_hw_stop(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ if (comm->enable == 0) {
+ /* Mask and clear all interrupts. */
+ writel(0xffffffff, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+ writel(0xffffffff, comm->l2sw_reg_base + L2SW_SW_INT_STATUS_0);
+
+ /* Disable cpu 0 and cpu 1. */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg |= MAC_DIS_SOC1_CPU | MAC_DIS_SOC0_CPU;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ }
+
+ /* Disable LAN ports. */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg |= FIELD_PREP(MAC_DIS_PORT, ~comm->enable);
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+}
+
+void spl2sw_mac_hw_start(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ /* Enable cpu port 0 (6) & CRC padding (8) */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg &= ~MAC_DIS_SOC0_CPU;
+ reg |= MAC_EN_CRC_SOC0;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Enable port 0 & port 1 */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg &= FIELD_PREP(MAC_DIS_PORT, ~comm->enable) | ~MAC_DIS_PORT;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+}
+
+int spl2sw_mac_addr_add(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ u32 reg;
+ int ret;
+
+ /* Write 6-octet MAC address. */
+ writel((mac->mac_addr[0] << 0) + (mac->mac_addr[1] << 8),
+ comm->l2sw_reg_base + L2SW_W_MAC_15_0);
+ writel((mac->mac_addr[2] << 0) + (mac->mac_addr[3] << 8) +
+ (mac->mac_addr[4] << 16) + (mac->mac_addr[5] << 24),
+ comm->l2sw_reg_base + L2SW_W_MAC_47_16);
+
+ /* Set learn port = cpu_port, aging = 1 */
+ reg = MAC_W_CPU_PORT_0 | FIELD_PREP(MAC_W_VID, mac->vlan_id) |
+ FIELD_PREP(MAC_W_AGE, 1) | MAC_W_MAC_CMD;
+ writel(reg, comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+
+ /* Wait for completing. */
+ ret = read_poll_timeout(readl, reg, reg & MAC_W_MAC_DONE, 1, 200, true,
+ comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+ if (ret) {
+ netdev_err(mac->ndev, "Failed to add address to table!\n");
+ return ret;
+ }
+
+ netdev_dbg(mac->ndev, "mac_ad0 = %08x, mac_ad = %08x%04x\n",
+ readl(comm->l2sw_reg_base + L2SW_WT_MAC_AD0),
+ (u32)FIELD_GET(MAC_W_MAC_47_16,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_47_16)),
+ (u32)FIELD_GET(MAC_W_MAC_15_0,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_15_0)));
+ return 0;
+}
+
+int spl2sw_mac_addr_del(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ u32 reg;
+ int ret;
+
+ /* Write 6-octet MAC address. */
+ writel((mac->mac_addr[0] << 0) + (mac->mac_addr[1] << 8),
+ comm->l2sw_reg_base + L2SW_W_MAC_15_0);
+ writel((mac->mac_addr[2] << 0) + (mac->mac_addr[3] << 8) +
+ (mac->mac_addr[4] << 16) + (mac->mac_addr[5] << 24),
+ comm->l2sw_reg_base + L2SW_W_MAC_47_16);
+
+ /* Set learn port = lan_port0 and aging = 0
+ * to wipe (age) out the entry.
+ */
+ reg = MAC_W_LAN_PORT_0 | FIELD_PREP(MAC_W_VID, mac->vlan_id) | MAC_W_MAC_CMD;
+ writel(reg, comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+
+ /* Wait for completing. */
+ ret = read_poll_timeout(readl, reg, reg & MAC_W_MAC_DONE, 1, 200, true,
+ comm->l2sw_reg_base + L2SW_WT_MAC_AD0);
+ if (ret) {
+ netdev_err(mac->ndev, "Failed to delete address from table!\n");
+ return ret;
+ }
+
+ netdev_dbg(mac->ndev, "mac_ad0 = %08x, mac_ad = %08x%04x\n",
+ readl(comm->l2sw_reg_base + L2SW_WT_MAC_AD0),
+ (u32)FIELD_GET(MAC_W_MAC_47_16,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_47_16)),
+ (u32)FIELD_GET(MAC_W_MAC_15_0,
+ readl(comm->l2sw_reg_base + L2SW_W_MAC_15_0)));
+ return 0;
+}
+
+void spl2sw_mac_hw_init(struct spl2sw_common *comm)
+{
+ u32 reg;
+
+ /* Disable cpu0 and cpu 1 port. */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg |= MAC_DIS_SOC1_CPU | MAC_DIS_SOC0_CPU;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Set base addresses of TX and RX queues. */
+ writel(comm->desc_dma, comm->l2sw_reg_base + L2SW_TX_LBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * TX_DESC_NUM,
+ comm->l2sw_reg_base + L2SW_TX_HBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * (TX_DESC_NUM +
+ MAC_GUARD_DESC_NUM), comm->l2sw_reg_base + L2SW_RX_HBASE_ADDR_0);
+ writel(comm->desc_dma + sizeof(struct spl2sw_mac_desc) * (TX_DESC_NUM +
+ MAC_GUARD_DESC_NUM + RX_QUEUE0_DESC_NUM),
+ comm->l2sw_reg_base + L2SW_RX_LBASE_ADDR_0);
+
+ /* Fc_rls_th=0x4a, Fc_set_th=0x3a, Drop_rls_th=0x2d, Drop_set_th=0x1d */
+ writel(0x4a3a2d1d, comm->l2sw_reg_base + L2SW_FL_CNTL_TH);
+
+ /* Cpu_rls_th=0x4a, Cpu_set_th=0x3a, Cpu_th=0x12, Port_th=0x12 */
+ writel(0x4a3a1212, comm->l2sw_reg_base + L2SW_CPU_FL_CNTL_TH);
+
+ /* mtcc_lmt=0xf, Pri_th_l=6, Pri_th_h=6, weigh_8x_en=1 */
+ writel(0xf6680000, comm->l2sw_reg_base + L2SW_PRI_FL_CNTL);
+
+ /* High-active LED */
+ reg = readl(comm->l2sw_reg_base + L2SW_LED_PORT0);
+ reg |= MAC_LED_ACT_HI;
+ writel(reg, comm->l2sw_reg_base + L2SW_LED_PORT0);
+
+ /* Disable aging of cpu port 0 & 1.
+ * Disable SA learning of cpu port 0 & 1.
+ * Enable UC and MC packets
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ reg &= ~(MAC_EN_SOC1_AGING | MAC_EN_SOC0_AGING |
+ MAC_DIS_BC2CPU_P1 | MAC_DIS_BC2CPU_P0 |
+ MAC_DIS_MC2CPU_P1 | MAC_DIS_MC2CPU_P0);
+ reg |= MAC_DIS_LRN_SOC1 | MAC_DIS_LRN_SOC0;
+ writel(reg, comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ /* Enable RMC2CPU for port 0 & 1
+ * Enable Flow control for port 0 & 1
+ * Enable Back pressure for port 0 & 1
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+ reg &= ~(MAC_DIS_RMC2CPU_P1 | MAC_DIS_RMC2CPU_P0);
+ reg |= MAC_EN_FLOW_CTL_P1 | MAC_EN_FLOW_CTL_P0 |
+ MAC_EN_BACK_PRESS_P1 | MAC_EN_BACK_PRESS_P0;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL0);
+
+ /* Disable LAN port SA learning. */
+ reg = readl(comm->l2sw_reg_base + L2SW_PORT_CNTL1);
+ reg |= MAC_DIS_SA_LRN_P1 | MAC_DIS_SA_LRN_P0;
+ writel(reg, comm->l2sw_reg_base + L2SW_PORT_CNTL1);
+
+ /* Enable rmii force mode and
+ * set both external phy-address to 31.
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+ reg &= ~(MAC_EXT_PHY1_ADDR | MAC_EXT_PHY0_ADDR);
+ reg |= FIELD_PREP(MAC_EXT_PHY1_ADDR, 31) | FIELD_PREP(MAC_EXT_PHY0_ADDR, 31);
+ reg |= MAC_FORCE_RMII_EN_1 | MAC_FORCE_RMII_EN_0;
+ writel(reg, comm->l2sw_reg_base + L2SW_MAC_FORCE_MODE);
+
+ /* Port 0: VLAN group 0
+ * Port 1: VLAN group 1
+ */
+ reg = FIELD_PREP(MAC_P1_PVID, 1) | FIELD_PREP(MAC_P0_PVID, 0);
+ writel(reg, comm->l2sw_reg_base + L2SW_PVID_CONFIG0);
+
+ /* VLAN group 0: cpu0 (bit3) + port0 (bit0) = 1001 = 0x9
+ * VLAN group 1: cpu0 (bit3) + port1 (bit1) = 1010 = 0xa
+ */
+ reg = FIELD_PREP(MAC_VLAN_MEMSET_1, 0xa) | FIELD_PREP(MAC_VLAN_MEMSET_0, 9);
+ writel(reg, comm->l2sw_reg_base + L2SW_VLAN_MEMSET_CONFIG0);
+
+ /* RMC forward: to_cpu (1)
+ * LED: 60mS (1)
+ * BC storm prev: 31 BC (1)
+ */
+ reg = readl(comm->l2sw_reg_base + L2SW_SW_GLB_CNTL);
+ reg &= ~(MAC_RMC_TB_FAULT_RULE | MAC_LED_FLASH_TIME | MAC_BC_STORM_PREV);
+ reg |= FIELD_PREP(MAC_RMC_TB_FAULT_RULE, 1) |
+ FIELD_PREP(MAC_LED_FLASH_TIME, 1) |
+ FIELD_PREP(MAC_BC_STORM_PREV, 1);
+ writel(reg, comm->l2sw_reg_base + L2SW_SW_GLB_CNTL);
+
+ writel(MAC_INT_MASK_DEF, comm->l2sw_reg_base + L2SW_SW_INT_MASK_0);
+}
+
+void spl2sw_mac_rx_mode_set(struct spl2sw_mac *mac)
+{
+ struct spl2sw_common *comm = mac->comm;
+ struct net_device *ndev = mac->ndev;
+ u32 mask, reg, rx_mode;
+
+ netdev_dbg(ndev, "ndev->flags = %08x\n", ndev->flags);
+ mask = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port) |
+ FIELD_PREP(MAC_DIS_UN2CPU, mac->lan_port);
+ reg = readl(comm->l2sw_reg_base + L2SW_CPU_CNTL);
+
+ if (ndev->flags & IFF_PROMISC) {
+ /* Allow MC and unknown UC packets */
+ rx_mode = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port) |
+ FIELD_PREP(MAC_DIS_UN2CPU, mac->lan_port);
+ } else if ((!netdev_mc_empty(ndev) && (ndev->flags & IFF_MULTICAST)) ||
+ (ndev->flags & IFF_ALLMULTI)) {
+ /* Allow MC packets */
+ rx_mode = FIELD_PREP(MAC_DIS_MC2CPU, mac->lan_port);
+ } else {
+ /* Disable MC and unknown UC packets */
+ rx_mode = 0;
+ }
+
+ writel((reg & (~mask)) | ((~rx_mode) & mask), comm->l2sw_reg_base + L2SW_CPU_CNTL);
+ netdev_dbg(ndev, "cpu_cntl = %08x\n", readl(comm->l2sw_reg_base + L2SW_CPU_CNTL));
+}
+
+void spl2sw_mac_init(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_pos[i] = 0;
+ mb(); /* make sure settings are effective. */
+
+ spl2sw_mac_hw_init(comm);
+}
+
+void spl2sw_mac_soft_reset(struct spl2sw_common *comm)
+{
+ u32 i;
+
+ spl2sw_mac_hw_stop(comm);
+
+ spl2sw_rx_descs_flush(comm);
+ comm->tx_pos = 0;
+ comm->tx_done_pos = 0;
+ comm->tx_desc_full = 0;
+
+ for (i = 0; i < RX_DESC_QUEUE_NUM; i++)
+ comm->rx_pos[i] = 0;
+ mb(); /* make sure settings are effective. */
+
+ spl2sw_mac_hw_init(comm);
+ spl2sw_mac_hw_start(comm);
+}