2014-10-30 16:54:49

by Robert Richter

Subject: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

Dave,

the patch below is the initial version of our network controller
driver for Cavium's ThunderX boards.

The patch is also available here:

git://git.kernel.org/pub/scm/linux/kernel/git/rric/linux.git tags/cavium-for-netdev-v3.19

Please consider it for inclusion into your tree.

Thanks,

-Robert



>From e5db4968386e2ab3fc054be4fa4389a1a7125588 Mon Sep 17 00:00:00 2001
From: Sunil Goutham <[email protected]>
Date: Fri, 8 Aug 2014 16:26:12 +0200
Subject: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

This patch adds support for the Cavium ThunderX network controller.
The driver is on the pci bus and thus requires the Thunder PCIe host
controller driver to be enabled.

Signed-off-by: Sunil Goutham <[email protected]>
Signed-off-by: Robert Richter <[email protected]>
---
MAINTAINERS | 7 +
arch/arm64/Kconfig | 1 +
drivers/net/ethernet/Kconfig | 1 +
drivers/net/ethernet/Makefile | 1 +
drivers/net/ethernet/cavium/Kconfig | 40 +
drivers/net/ethernet/cavium/Makefile | 5 +
drivers/net/ethernet/cavium/thunder/Makefile | 13 +
drivers/net/ethernet/cavium/thunder/nic.h | 434 +++++++
drivers/net/ethernet/cavium/thunder/nic_main.c | 807 ++++++++++++
drivers/net/ethernet/cavium/thunder/nic_reg.h | 214 ++++
.../net/ethernet/cavium/thunder/nicvf_ethtool.c | 478 +++++++
drivers/net/ethernet/cavium/thunder/nicvf_main.c | 1326 ++++++++++++++++++++
drivers/net/ethernet/cavium/thunder/nicvf_queues.c | 1302 +++++++++++++++++++
drivers/net/ethernet/cavium/thunder/nicvf_queues.h | 355 ++++++
drivers/net/ethernet/cavium/thunder/q_struct.h | 690 ++++++++++
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 386 ++++++
drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 78 ++
include/linux/pci_ids.h | 2 +
18 files changed, 6140 insertions(+)
create mode 100644 drivers/net/ethernet/cavium/Kconfig
create mode 100644 drivers/net/ethernet/cavium/Makefile
create mode 100644 drivers/net/ethernet/cavium/thunder/Makefile
create mode 100644 drivers/net/ethernet/cavium/thunder/nic.h
create mode 100644 drivers/net/ethernet/cavium/thunder/nic_main.c
create mode 100644 drivers/net/ethernet/cavium/thunder/nic_reg.h
create mode 100644 drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
create mode 100644 drivers/net/ethernet/cavium/thunder/nicvf_main.c
create mode 100644 drivers/net/ethernet/cavium/thunder/nicvf_queues.c
create mode 100644 drivers/net/ethernet/cavium/thunder/nicvf_queues.h
create mode 100644 drivers/net/ethernet/cavium/thunder/q_struct.h
create mode 100644 drivers/net/ethernet/cavium/thunder/thunder_bgx.c
create mode 100644 drivers/net/ethernet/cavium/thunder/thunder_bgx.h

diff --git a/MAINTAINERS b/MAINTAINERS
index a20df9bf8ab0..9a36569d75df 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -882,6 +882,13 @@ M: Krzysztof Halasa <[email protected]>
S: Maintained
F: arch/arm/mach-cns3xxx/

+ARM/CAVIUM THUNDER ARCHITECTURE
+M: Sunil Goutham <[email protected]>
+M: Robert Richter <[email protected]>
+L: [email protected] (moderated for non-subscribers)
+S: Supported
+F: drivers/net/ethernet/cavium/
+
ARM/CIRRUS LOGIC CLPS711X ARM ARCHITECTURE
M: Alexander Shiyan <[email protected]>
L: [email protected] (moderated for non-subscribers)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index ac9afde76dea..bc14b1a78ae2 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -145,6 +145,7 @@ config ARCH_THUNDER
bool "Cavium Inc. Thunder SoC Family"
help
This enables support for Cavium's Thunder Family of SoCs.
+ select NET_VENDOR_CAVIUM

config ARCH_VEXPRESS
bool "ARMv8 software model (Versatile Express)"
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 1ed1fbba5d58..7c872ff82aed 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -34,6 +34,7 @@ source "drivers/net/ethernet/adi/Kconfig"
source "drivers/net/ethernet/broadcom/Kconfig"
source "drivers/net/ethernet/brocade/Kconfig"
source "drivers/net/ethernet/calxeda/Kconfig"
+source "drivers/net/ethernet/cavium/Kconfig"
source "drivers/net/ethernet/chelsio/Kconfig"
source "drivers/net/ethernet/cirrus/Kconfig"
source "drivers/net/ethernet/cisco/Kconfig"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index 6e0b629e9859..7a9f7d7b55bf 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_NET_BFIN) += adi/
obj-$(CONFIG_NET_VENDOR_BROADCOM) += broadcom/
obj-$(CONFIG_NET_VENDOR_BROCADE) += brocade/
obj-$(CONFIG_NET_CALXEDA_XGMAC) += calxeda/
+obj-$(CONFIG_NET_VENDOR_CAVIUM) += cavium/
obj-$(CONFIG_NET_VENDOR_CHELSIO) += chelsio/
obj-$(CONFIG_NET_VENDOR_CIRRUS) += cirrus/
obj-$(CONFIG_NET_VENDOR_CISCO) += cisco/
diff --git a/drivers/net/ethernet/cavium/Kconfig b/drivers/net/ethernet/cavium/Kconfig
new file mode 100644
index 000000000000..6365fb4242be
--- /dev/null
+++ b/drivers/net/ethernet/cavium/Kconfig
@@ -0,0 +1,40 @@
+#
+# Cavium ethernet device configuration
+#
+
+config NET_VENDOR_CAVIUM
+ tristate "Cavium ethernet drivers"
+ depends on PCI
+ ---help---
+ Enable support for the Cavium ThunderX Network Interface
+ Controller (NIC). The NIC provides the controller and DMA
+ engines to move network traffic to/from the memory. The NIC
+ works closely with TNS, BGX and SerDes to implement the
+ functions replacing and virtualizing those of a typical
+ standalone PCIe NIC chip.
+
+ If you have a Cavium Thunder board, say Y.
+
+if NET_VENDOR_CAVIUM
+
+config THUNDER_NIC_PF
+ tristate "Thunder Physical function driver"
+ default NET_VENDOR_CAVIUM
+ select THUNDER_NIC_BGX
+ ---help---
+ This driver supports Thunder's NIC physical function.
+
+config THUNDER_NIC_VF
+ tristate "Thunder Virtual function driver"
+ default NET_VENDOR_CAVIUM
+ ---help---
+ This driver supports Thunder's NIC virtual function
+
+config THUNDER_NIC_BGX
+ tristate "Thunder MAC interface driver (BGX)"
+ default NET_VENDOR_CAVIUM
+ ---help---
+ This driver supports programming and controlling of MAC
+ interface from NIC physical function driver.
+
+endif # NET_VENDOR_CAVIUM
diff --git a/drivers/net/ethernet/cavium/Makefile b/drivers/net/ethernet/cavium/Makefile
new file mode 100644
index 000000000000..7aac4780d050
--- /dev/null
+++ b/drivers/net/ethernet/cavium/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Cavium ethernet device drivers.
+#
+
+obj-$(CONFIG_NET_VENDOR_CAVIUM) += thunder/
diff --git a/drivers/net/ethernet/cavium/thunder/Makefile b/drivers/net/ethernet/cavium/thunder/Makefile
new file mode 100644
index 000000000000..8ee6e043f8ff
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/Makefile
@@ -0,0 +1,13 @@
+#
+# Makefile for Cavium's Thunder ethernet device
+#
+
+
+# Don't change the order, NICPF driver is dependent on BGX driver init
+obj-$(CONFIG_THUNDER_NIC_BGX) += thunder_bgx.o
+obj-$(CONFIG_THUNDER_NIC_PF) += nicpf.o
+obj-$(CONFIG_THUNDER_NIC_VF) += nicvf.o
+
+nicpf-y := nic_main.o
+nicvf-y := nicvf_main.o nicvf_queues.o
+nicvf-y += nicvf_ethtool.o
diff --git a/drivers/net/ethernet/cavium/thunder/nic.h b/drivers/net/ethernet/cavium/thunder/nic.h
new file mode 100644
index 000000000000..be3530ca9cf2
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nic.h
@@ -0,0 +1,434 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#ifndef NIC_H
+#define NIC_H
+
+#include <linux/netdevice.h>
+#include <linux/interrupt.h>
+#include "thunder_bgx.h"
+
+/* PCI device IDs */
+#define PCI_DEVICE_ID_THUNDER_NIC_PF 0xA01E
+#define PCI_DEVICE_ID_THUNDER_NIC_VF 0x0011
+#define PCI_DEVICE_ID_THUNDER_BGX 0xA026
+
+/* PCI BAR nos */
+#define PCI_CFG_REG_BAR_NUM 0
+#define PCI_MSIX_REG_BAR_NUM 4
+
+/* NIC SRIOV VF count */
+#define MAX_NUM_VFS_SUPPORTED 128
+#define DEFAULT_NUM_VF_ENABLED 8
+
+#define NIC_TNS_BYPASS_MODE 0
+#define NIC_TNS_MODE 1
+
+/* NIC priv flags */
+#define NIC_SRIOV_ENABLED (1 << 0)
+#define NIC_TNS_ENABLED (1 << 1)
+
+/* VNIC HW optimiation features */
+#undef VNIC_RX_CSUM_OFFLOAD_SUPPORT
+#undef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+#define VNIC_SG_SUPPORT
+#define VNIC_TSO_SUPPORT
+#undef VNIC_LRO_SUPPORT
+#undef VNIC_RSS_SUPPORT
+
+/* TSO not supported in Thunder pass1 */
+#ifdef VNIC_TSO_SUPPORT
+#define VNIC_SW_TSO_SUPPORT
+#undef VNIC_HW_TSO_SUPPORT
+#endif
+
+/* ETHTOOL enable or disable, undef this to disable */
+#define NICVF_ETHTOOL_ENABLE
+
+/* Min/Max packet size */
+#define NIC_HW_MIN_FRS 64
+#define NIC_HW_MAX_FRS 9194 /* 9216 max packet including FCS */
+
+/* Max pkinds */
+#define NIC_MAX_PKIND 16
+
+/* Rx Channels */
+/* Receive channel configuration in TNS bypass mode
+ * Below is configuration in TNS bypass mode
+ * BGX0-LMAC0-CHAN0 - VNIC CHAN0
+ * BGX0-LMAC1-CHAN0 - VNIC CHAN16
+ * ...
+ * BGX1-LMAC0-CHAN0 - VNIC CHAN128
+ * ...
+ * BGX1-LMAC3-CHAN0 - VNIC CHAN174
+ */
+#define NIC_INF_COUNT 2 /* No of interfaces */
+#define NIC_CHANS_PER_INF 128
+#define NIC_MAX_CHANS (NIC_INF_COUNT * NIC_CHANS_PER_INF)
+#define NIC_CPI_COUNT 2048 /* No of channel parse indices */
+
+/* TNS bypass mode: 1-1 mapping between VNIC and BGX:LMAC */
+#define NIC_MAX_BGX MAX_BGX_PER_CN88XX
+#define NIC_CPI_PER_BGX (NIC_CPI_COUNT / NIC_MAX_BGX)
+#define NIC_MAX_CPI_PER_LMAC 64 /* Max when CPI_ALG is IP diffserv */
+#define NIC_RSSI_PER_BGX (NIC_RSSI_COUNT / NIC_MAX_BGX)
+
+/* Tx scheduling */
+#define NIC_MAX_TL4 1024
+#define NIC_MAX_TL4_SHAPERS 256 /* 1 shaper for 4 TL4s */
+#define NIC_MAX_TL3 256
+#define NIC_MAX_TL3_SHAPERS 64 /* 1 shaper for 4 TL3s */
+#define NIC_MAX_TL2 64
+#define NIC_MAX_TL2_SHAPERS 2 /* 1 shaper for 32 TL2s */
+#define NIC_MAX_TL1 2
+
+/* TNS bypass mode */
+#define NIC_TL4_PER_BGX (NIC_MAX_TL4 / NIC_MAX_BGX)
+#define NIC_TL4_PER_LMAC (NIC_MAX_TL4 / NIC_CHANS_PER_INF)
+
+/* NIC VF Interrupts */
+#define NICVF_INTR_CQ 0
+#define NICVF_INTR_SQ 1
+#define NICVF_INTR_RBDR 2
+#define NICVF_INTR_PKT_DROP 3
+#define NICVF_INTR_TCP_TIMER 4
+#define NICVF_INTR_MBOX 5
+#define NICVF_INTR_QS_ERR 6
+
+#define NICVF_INTR_CQ_SHIFT 0
+#define NICVF_INTR_SQ_SHIFT 8
+#define NICVF_INTR_RBDR_SHIFT 16
+#define NICVF_INTR_PKT_DROP_SHIFT 20
+#define NICVF_INTR_TCP_TIMER_SHIFT 21
+#define NICVF_INTR_MBOX_SHIFT 22
+#define NICVF_INTR_QS_ERR_SHIFT 23
+
+#define NICVF_INTR_CQ_MASK (0xFF << NICVF_INTR_CQ_SHIFT)
+#define NICVF_INTR_SQ_MASK (0xFF << NICVF_INTR_SQ_SHIFT)
+#define NICVF_INTR_RBDR_MASK (0x03 << NICVF_INTR_RBDR_SHIFT)
+#define NICVF_INTR_PKT_DROP_MASK (1 << NICVF_INTR_PKT_DROP_SHIFT)
+#define NICVF_INTR_TCP_TIMER_MASK (1 << NICVF_INTR_TCP_TIMER_SHIFT)
+#define NICVF_INTR_MBOX_MASK (1 << NICVF_INTR_MBOX_SHIFT)
+#define NICVF_INTR_QS_ERR_MASK (1 << NICVF_INTR_QS_ERR_SHIFT)
+
+/* MSI-X interrupts */
+#define NIC_PF_MSIX_VECTORS 10
+#define NIC_VF_MSIX_VECTORS 20
+
+#define NIC_PF_INTR_ID_ECC0_SBE 0
+#define NIC_PF_INTR_ID_ECC0_DBE 1
+#define NIC_PF_INTR_ID_ECC1_SBE 2
+#define NIC_PF_INTR_ID_ECC1_DBE 3
+#define NIC_PF_INTR_ID_ECC2_SBE 4
+#define NIC_PF_INTR_ID_ECC2_DBE 5
+#define NIC_PF_INTR_ID_ECC3_SBE 6
+#define NIC_PF_INTR_ID_ECC3_DBE 7
+#define NIC_PF_INTR_ID_MBOX0 8
+#define NIC_PF_INTR_ID_MBOX1 9
+
+/* For CQ timer threshold interrupt */
+#define NIC_NS_PER_100_SYETEM_CLK 125
+#define NICPF_CLK_PER_INT_TICK 100
+
+struct nicvf_cq_poll {
+ uint8_t cq_idx; /* Completion queue index */
+ struct napi_struct napi;
+};
+
+#define NIC_RSSI_COUNT 4096 /* Total no of RSS indices */
+#define NIC_MAX_RSS_HASH_BITS 8
+#define NIC_MAX_RSS_IDR_TBL_SIZE (1 << NIC_MAX_RSS_HASH_BITS)
+#define RSS_HASH_KEY_SIZE 5 /* 320 bit key */
+
+#ifdef VNIC_RSS_SUPPORT
+struct nicvf_rss_info {
+ bool enable;
+#define RSS_L2_EXTENDED_HASH_ENA (1 << 0)
+#define RSS_IP_HASH_ENA (1 << 1)
+#define RSS_TCP_HASH_ENA (1 << 2)
+#define RSS_TCP_SYN_DIS (1 << 3)
+#define RSS_UDP_HASH_ENA (1 << 4)
+#define RSS_L4_EXTENDED_HASH_ENA (1 << 5)
+#define RSS_ROCE_ENA (1 << 6)
+#define RSS_L3_BI_DIRECTION_ENA (1 << 7)
+#define RSS_L4_BI_DIRECTION_ENA (1 << 8)
+ uint64_t cfg;
+ uint8_t hash_bits;
+ uint16_t rss_size;
+ uint8_t ind_tbl[NIC_MAX_RSS_IDR_TBL_SIZE];
+ uint64_t key[RSS_HASH_KEY_SIZE];
+};
+#endif
+
+enum rx_stats_reg_offset {
+ RX_OCTS = 0x0,
+ RX_UCAST = 0x1,
+ RX_BCAST = 0x2,
+ RX_MCAST = 0x3,
+ RX_RED = 0x4,
+ RX_RED_OCTS = 0x5,
+ RX_ORUN = 0x6,
+ RX_ORUN_OCTS = 0x7,
+ RX_FCS = 0x8,
+ RX_L2ERR = 0x9,
+ RX_DRP_BCAST = 0xa,
+ RX_DRP_MCAST = 0xb,
+ RX_DRP_L3BCAST = 0xc,
+ RX_DRP_L3MCAST = 0xd,
+ RX_STATS_ENUM_LAST,
+};
+
+enum tx_stats_reg_offset {
+ TX_OCTS = 0x0,
+ TX_UCAST = 0x1,
+ TX_BCAST = 0x2,
+ TX_MCAST = 0x3,
+ TX_DROP = 0x4,
+ TX_STATS_ENUM_LAST,
+};
+
+struct nicvf_hw_stats {
+ u64 rx_bytes_ok;
+ u64 rx_ucast_frames_ok;
+ u64 rx_bcast_frames_ok;
+ u64 rx_mcast_frames_ok;
+ u64 rx_fcs_errors;
+ u64 rx_l2_errors;
+ u64 rx_drop_red;
+ u64 rx_drop_red_bytes;
+ u64 rx_drop_overrun;
+ u64 rx_drop_overrun_bytes;
+ u64 rx_drop_bcast;
+ u64 rx_drop_mcast;
+ u64 rx_drop_l3_bcast;
+ u64 rx_drop_l3_mcast;
+ u64 tx_bytes_ok;
+ u64 tx_ucast_frames_ok;
+ u64 tx_bcast_frames_ok;
+ u64 tx_mcast_frames_ok;
+ u64 tx_drops;
+};
+
+struct nicvf_drv_stats {
+ /* Rx */
+ u64 rx_frames_ok;
+ u64 rx_frames_64;
+ u64 rx_frames_127;
+ u64 rx_frames_255;
+ u64 rx_frames_511;
+ u64 rx_frames_1023;
+ u64 rx_frames_1518;
+ u64 rx_frames_jumbo;
+ u64 rx_drops;
+ /* Tx */
+ u64 tx_frames_ok;
+ u64 tx_drops;
+ u64 tx_busy;
+ u64 tx_tso;
+};
+
+struct nicvf {
+ struct net_device *netdev;
+ struct pci_dev *pdev;
+ uint8_t vf_id;
+ uint8_t tns_mode;
+ uint16_t mtu;
+ struct queue_set *qs;
+ uint8_t num_qs;
+ void *addnl_qs;
+ uint16_t vf_mtu;
+ uint64_t reg_base;
+ struct tasklet_struct rbdr_task;
+ struct tasklet_struct qs_err_task;
+ struct nicvf_cq_poll *napi[8];
+#ifdef VNIC_RSS_SUPPORT
+ struct nicvf_rss_info rss_info;
+#endif
+ uint8_t cpi_alg;
+
+ struct nicvf_hw_stats stats;
+ struct nicvf_drv_stats drv_stats;
+ struct work_struct reset_task;
+
+ /* MSI-X */
+ bool msix_enabled;
+ uint16_t num_vec;
+ struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS];
+ char irq_name[NIC_VF_MSIX_VECTORS][20];
+ uint8_t irq_allocated[NIC_VF_MSIX_VECTORS];
+};
+
+struct nicpf {
+ struct net_device *netdev;
+ struct pci_dev *pdev;
+#define NIC_NODE_ID_MASK 0x300000000000
+#define NIC_NODE_ID(x) ((x & NODE_ID_MASK) >> 44)
+ uint8_t node;
+ unsigned int flags;
+ uint16_t total_vf_cnt; /* Total num of VF supported */
+ uint16_t num_vf_en; /* No of VF enabled */
+ uint64_t reg_base; /* Register start address */
+ struct pkind_cfg pkind;
+ uint8_t bgx_cnt;
+#define NIC_SET_VF_LMAC_MAP(bgx, lmac) (((bgx & 0xF) << 4) | (lmac & 0xF))
+#define NIC_GET_BGX_FROM_VF_LMAC_MAP(map) ((map >> 4) & 0xF)
+#define NIC_GET_LMAC_FROM_VF_LMAC_MAP(map) (map & 0xF)
+ uint8_t vf_lmac_map[MAX_LMAC];
+ uint16_t cpi_base[MAX_NUM_VFS_SUPPORTED];
+ uint16_t rss_ind_tbl_size;
+
+ /* MSI-X */
+ bool msix_enabled;
+ uint16_t num_vec;
+ struct msix_entry msix_entries[NIC_PF_MSIX_VECTORS];
+ uint8_t irq_allocated[NIC_PF_MSIX_VECTORS];
+};
+
+/* PF <--> VF Mailbox communication
+ * Eight 64bit registers are shared between PF and VF.
+ * Separate set for each VF.
+ * Writing '1' into last register mbx7 means end of message.
+ */
+
+/* PF <--> VF mailbox communication */
+#define NIC_PF_VF_MAILBOX_SIZE 8
+#define NIC_PF_VF_MBX_TIMEOUT 5000 /* ms */
+
+/* Mailbox message types */
+#define NIC_PF_VF_MSG_READY 0x01 /* Is PF ready to rcv msgs */
+#define NIC_PF_VF_MSG_ACK 0x02 /* ACK the message received */
+#define NIC_PF_VF_MSG_NACK 0x03 /* NACK the message received */
+#define NIC_PF_VF_MSG_QS_CFG 0x04 /* Configure Qset */
+#define NIC_PF_VF_MSG_RQ_CFG 0x05 /* Configure receive queue */
+#define NIC_PF_VF_MSG_SQ_CFG 0x06 /* Configure Send queue */
+#define NIC_PF_VF_MSG_RQ_DROP_CFG 0x07 /* Configure receive queue */
+#define NIC_PF_VF_MSG_SET_MAC 0x08 /* Add MAC ID to DMAC filter */
+#define NIC_PF_VF_MSG_SET_MAX_FRS 0x09 /* Set max frame size */
+#define NIC_PF_VF_MSG_CPI_CFG 0x0A /* Config CPI, RSSI */
+#define NIC_PF_VF_MSG_RSS_SIZE 0x0B /* Get RSS indir_tbl size */
+#define NIC_PF_VF_MSG_RSS_CFG 0x0C /* Config RSS table */
+#define NIC_PF_VF_MSG_RSS_CFG_CONT 0x0D /* RSS config continuation */
+
+struct nic_cfg_msg {
+ uint64_t vf_id;
+ uint64_t tns_mode;
+ uint64_t mac_addr;
+};
+
+/* Qset configuration */
+struct qs_cfg_msg {
+ uint64_t num;
+ uint64_t cfg;
+};
+
+/* Receive queue configuration */
+struct rq_cfg_msg {
+ uint64_t qs_num;
+ uint64_t rq_num;
+ uint64_t cfg;
+};
+
+/* Send queue configuration */
+struct sq_cfg_msg {
+ uint64_t qs_num;
+ uint64_t sq_num;
+ uint64_t cfg;
+};
+
+/* Set VF's MAC address */
+struct set_mac_msg {
+ uint64_t vf_id;
+ uint64_t addr;
+};
+
+/* Set Maximum frame size */
+struct set_frs_msg {
+ uint64_t vf_id;
+ uint64_t max_frs;
+};
+
+/* Set CPI algorithm type */
+struct cpi_cfg_msg {
+ uint64_t vf_id;
+ uint64_t rq_cnt;
+ uint64_t cpi_alg;
+};
+
+#ifdef VNIC_RSS_SUPPORT
+/* Get RSS table size */
+struct rss_sz_msg {
+ uint64_t vf_id;
+ uint64_t ind_tbl_size;
+};
+
+/* Set RSS configuration */
+struct rss_cfg_msg {
+ uint8_t vf_id;
+ uint8_t hash_bits;
+ uint16_t tbl_len;
+ uint16_t tbl_offset;
+#define RSS_IND_TBL_LEN_PER_MBX_MSG 42
+ uint8_t ind_tbl[RSS_IND_TBL_LEN_PER_MBX_MSG];
+};
+#endif
+
+/* Maximum 8 64bit locations */
+struct nic_mbx {
+#define NIC_PF_VF_MBX_MSG_MASK 0xFFFF
+ uint16_t msg;
+#define NIC_PF_VF_MBX_LOCK_OFFSET 0
+#define NIC_PF_VF_MBX_LOCK_VAL(x) ((x >> 16) & 0xFFFF)
+#define NIC_PF_VF_MBX_LOCK_CLEAR(x) (x & ~(0xFFFF0000))
+#define NIC_PF_VF_MBX_LOCK_SET(x)\
+ (NIC_PF_VF_MBX_LOCK_CLEAR(x) | (1 << 16))
+ uint16_t mbx_lock;
+ uint32_t unused;
+ union {
+ struct nic_cfg_msg nic_cfg;
+ struct qs_cfg_msg qs;
+ struct rq_cfg_msg rq;
+ struct sq_cfg_msg sq;
+ struct set_mac_msg mac;
+ struct set_frs_msg frs;
+ struct cpi_cfg_msg cpi_cfg;
+#ifdef VNIC_RSS_SUPPORT
+ struct rss_sz_msg rss_size;
+ struct rss_cfg_msg rss_cfg;
+#endif
+ uint64_t rsvd[6];
+ } data;
+ uint64_t mbx_trigger_intr;
+};
+
+int nicvf_set_real_num_queues(struct net_device *netdev,
+ int tx_queues, int rx_queues);
+int nicvf_open(struct net_device *netdev);
+int nicvf_stop(struct net_device *netdev);
+int nicvf_send_msg_to_pf(struct nicvf *vf, struct nic_mbx *mbx);
+void nicvf_config_cpi(struct nicvf *nic);
+#ifdef VNIC_RSS_SUPPORT
+void nicvf_config_rss(struct nicvf *nic);
+#endif
+void nicvf_free_skb(struct nicvf *nic, struct sk_buff *skb);
+#ifdef NICVF_ETHTOOL_ENABLE
+void nicvf_set_ethtool_ops(struct net_device *netdev);
+#endif
+void nicvf_update_stats(struct nicvf *nic);
+
+/* Debug */
+#undef NIC_DEBUG
+
+#ifdef NIC_DEBUG
+#define nic_dbg(dev, fmt, arg...) \
+ dev_info(dev, fmt, ##arg)
+#else
+#define nic_dbg(dev, fmt, arg...) do {} while (0)
+#endif
+
+#endif /* NIC_H */
diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c
new file mode 100644
index 000000000000..ce43deec5014
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nic_main.c
@@ -0,0 +1,807 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#include "nic_reg.h"
+#include "nic.h"
+#include "q_struct.h"
+#include "thunder_bgx.h"
+
+#define DRV_NAME "thunder-nic"
+#define DRV_VERSION "1.0"
+
+static void nic_config_cpi(struct nicpf *nic, struct cpi_cfg_msg *cfg);
+#ifdef VNIC_RSS_SUPPORT
+static void nic_send_rss_size(struct nicpf *nic, int vf);
+static void nic_config_rss(struct nicpf *nic, struct rss_cfg_msg *cfg);
+#endif
+static void nic_tx_channel_cfg(struct nicpf *nic, int vnic, int sq_idx);
+static int nic_update_hw_frs(struct nicpf *nic, int new_frs, int vf);
+
+/* Supported devices */
+static const struct pci_device_id nic_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_NIC_PF) },
+ { 0, } /* end of table */
+};
+
+MODULE_AUTHOR("Sunil Goutham");
+MODULE_DESCRIPTION("Cavium Thunder NIC Physical Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, nic_id_table);
+
+/* Register read/write APIs */
+static void nic_reg_write(struct nicpf *nic, uint64_t offset, uint64_t val)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ writeq_relaxed(val, (void *)addr);
+}
+
+static uint64_t nic_reg_read(struct nicpf *nic, uint64_t offset)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ return readq_relaxed((void *)addr);
+}
+
+/* PF -> VF mailbox communication APIs */
+static void nic_enable_mbx_intr(struct nicpf *nic)
+{
+ /* Enable mailbox interrupt for all 128 VFs */
+ nic_reg_write(nic, NIC_PF_MAILBOX_ENA_W1S, ~0x00ull);
+ nic_reg_write(nic, NIC_PF_MAILBOX_ENA_W1S + (1 << 3), ~0x00ull);
+}
+
+static uint64_t nic_get_mbx_intr_status(struct nicpf *nic, int mbx_reg)
+{
+ return nic_reg_read(nic, NIC_PF_MAILBOX_INT + (mbx_reg << 3));
+}
+
+static void nic_clear_mbx_intr(struct nicpf *nic, int vf, int mbx_reg)
+{
+ nic_reg_write(nic, NIC_PF_MAILBOX_INT + (mbx_reg << 3), (1ULL << vf));
+}
+
+static uint64_t nic_get_mbx_addr(int vf)
+{
+ return NIC_PF_VF_0_127_MAILBOX_0_7 + (vf << NIC_VF_NUM_SHIFT);
+}
+
+static int nic_lock_mbox(struct nicpf *nic, int vf)
+{
+ int timeout = NIC_PF_VF_MBX_TIMEOUT;
+ int sleep = 10;
+ uint64_t lock, mbx_addr;
+
+ mbx_addr = nic_get_mbx_addr(vf) + NIC_PF_VF_MBX_LOCK_OFFSET;
+ lock = NIC_PF_VF_MBX_LOCK_VAL(nic_reg_read(nic, mbx_addr));
+ while (lock) {
+ msleep(sleep);
+ lock = NIC_PF_VF_MBX_LOCK_VAL(nic_reg_read(nic, mbx_addr));
+ timeout -= sleep;
+ if (!timeout) {
+ netdev_err(nic->netdev, "PF couldn't lock mailbox\n");
+ return 0;
+ }
+ }
+ lock = nic_reg_read(nic, mbx_addr);
+ nic_reg_write(nic, mbx_addr, NIC_PF_VF_MBX_LOCK_SET(lock));
+ return 1;
+}
+
+void nic_release_mbx(struct nicpf *nic, int vf)
+{
+ uint64_t mbx_addr, lock;
+
+ mbx_addr = nic_get_mbx_addr(vf) + NIC_PF_VF_MBX_LOCK_OFFSET;
+ lock = nic_reg_read(nic, mbx_addr);
+ nic_reg_write(nic, mbx_addr, NIC_PF_VF_MBX_LOCK_CLEAR(lock));
+}
+
+static int nic_send_msg_to_vf(struct nicpf *nic, int vf,
+ struct nic_mbx *mbx, bool lock_needed)
+{
+ int i;
+ uint64_t *msg;
+ uint64_t mbx_addr;
+
+ if (lock_needed && (!nic_lock_mbox(nic, vf)))
+ return -EBUSY;
+
+ mbx->mbx_trigger_intr = 1;
+ msg = (uint64_t *)mbx;
+ mbx_addr = nic->reg_base + nic_get_mbx_addr(vf);
+
+ for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++)
+ writeq_relaxed(*(msg + i), (void *)(mbx_addr + (i * 8)));
+
+ if (lock_needed)
+ nic_release_mbx(nic, vf);
+ return 0;
+}
+
+static void nic_mbx_send_ready(struct nicpf *nic, int vf)
+{
+ struct nic_mbx mbx = {};
+
+ /* Respond with VNIC ID */
+ mbx.msg = NIC_PF_VF_MSG_READY;
+ mbx.data.nic_cfg.vf_id = vf;
+
+ if (nic->flags & NIC_TNS_ENABLED)
+ mbx.data.nic_cfg.tns_mode = NIC_TNS_MODE;
+ else
+ mbx.data.nic_cfg.tns_mode = NIC_TNS_BYPASS_MODE;
+
+ nic_send_msg_to_vf(nic, vf, &mbx, false);
+}
+
+static void nic_mbx_send_ack(struct nicpf *nic, int vf)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_ACK;
+ nic_send_msg_to_vf(nic, vf, &mbx, false);
+}
+
+static void nic_mbx_send_nack(struct nicpf *nic, int vf)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_NACK;
+ nic_send_msg_to_vf(nic, vf, &mbx, false);
+}
+
+/* Handle Mailbox messages from VF and ack the message. */
+static void nic_handle_mbx_intr(struct nicpf *nic, int vf)
+{
+ struct nic_mbx mbx = {};
+ uint64_t *mbx_data;
+ uint64_t mbx_addr;
+ uint64_t reg_addr;
+ int bgx, lmac;
+ int i;
+ int ret = 0;
+
+ mbx_addr = nic_get_mbx_addr(vf);
+ mbx_data = (uint64_t *)&mbx;
+
+ for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) {
+ *mbx_data = nic_reg_read(nic, mbx_addr);
+ mbx_data++;
+ mbx_addr += NIC_PF_VF_MAILBOX_SIZE;
+ }
+
+ mbx.msg &= NIC_PF_VF_MBX_MSG_MASK;
+ nic_dbg(&nic->pdev->dev, "%s: Mailbox msg %d from VF%d\n",
+ __func__, mbx.msg, vf);
+ switch (mbx.msg) {
+ case NIC_PF_VF_MSG_READY:
+ nic_mbx_send_ready(nic, vf);
+ ret = 1;
+ break;
+ case NIC_PF_VF_MSG_QS_CFG:
+ reg_addr = NIC_PF_QSET_0_127_CFG |
+ (mbx.data.qs.num << NIC_QS_ID_SHIFT);
+ nic_reg_write(nic, reg_addr, mbx.data.qs.cfg);
+ break;
+ case NIC_PF_VF_MSG_RQ_CFG:
+ reg_addr = NIC_PF_QSET_0_127_RQ_0_7_CFG |
+ (mbx.data.rq.qs_num << NIC_QS_ID_SHIFT) |
+ (mbx.data.rq.rq_num << NIC_Q_NUM_SHIFT);
+ nic_reg_write(nic, reg_addr, mbx.data.rq.cfg);
+ break;
+ case NIC_PF_VF_MSG_RQ_DROP_CFG:
+ reg_addr = NIC_PF_QSET_0_127_RQ_0_7_DROP_CFG |
+ (mbx.data.rq.qs_num << NIC_QS_ID_SHIFT) |
+ (mbx.data.rq.rq_num << NIC_Q_NUM_SHIFT);
+ nic_reg_write(nic, reg_addr, mbx.data.rq.cfg);
+ break;
+ case NIC_PF_VF_MSG_SQ_CFG:
+ reg_addr = NIC_PF_QSET_0_127_SQ_0_7_CFG |
+ (mbx.data.sq.qs_num << NIC_QS_ID_SHIFT) |
+ (mbx.data.sq.sq_num << NIC_Q_NUM_SHIFT);
+ nic_reg_write(nic, reg_addr, mbx.data.sq.cfg);
+ nic_tx_channel_cfg(nic, mbx.data.qs.num, mbx.data.sq.sq_num);
+ break;
+ case NIC_PF_VF_MSG_SET_MAC:
+ lmac = mbx.data.mac.vf_id;
+ bgx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lmac]);
+ lmac = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lmac]);
+ bgx_add_dmac_addr(mbx.data.mac.addr, nic->node, bgx, lmac);
+ break;
+ case NIC_PF_VF_MSG_SET_MAX_FRS:
+ ret = nic_update_hw_frs(nic, mbx.data.frs.max_frs,
+ mbx.data.frs.vf_id);
+ break;
+ case NIC_PF_VF_MSG_CPI_CFG:
+ nic_config_cpi(nic, &mbx.data.cpi_cfg);
+ break;
+#ifdef VNIC_RSS_SUPPORT
+ case NIC_PF_VF_MSG_RSS_SIZE:
+ nic_send_rss_size(nic, vf);
+ break;
+ case NIC_PF_VF_MSG_RSS_CFG:
+ case NIC_PF_VF_MSG_RSS_CFG_CONT:
+ nic_config_rss(nic, &mbx.data.rss_cfg);
+ break;
+#endif
+ default:
+ netdev_err(nic->netdev,
+ "Invalid msg from VF%d, msg 0x%x\n", vf, mbx.msg);
+ break;
+ }
+
+ if (!ret)
+ nic_mbx_send_ack(nic, vf);
+ else if (mbx.msg != NIC_PF_VF_MSG_READY)
+ nic_mbx_send_nack(nic, vf);
+}
+
+static int nic_update_hw_frs(struct nicpf *nic, int new_frs, int vf)
+{
+ if ((new_frs > NIC_HW_MAX_FRS) || (new_frs < NIC_HW_MIN_FRS)) {
+ netdev_err(nic->netdev,
+ "Invalid MTU setting from VF%d rejected, should be between %d and %d\n",
+ vf, NIC_HW_MIN_FRS, NIC_HW_MAX_FRS);
+ return 1;
+ }
+ new_frs += ETH_HLEN;
+ if (new_frs <= nic->pkind.maxlen)
+ return 0;
+
+ nic->pkind.maxlen = new_frs;
+ nic_reg_write(nic, NIC_PF_PKIND_0_15_CFG, *(uint64_t *)&nic->pkind);
+ return 0;
+}
+
+/* Set minimum transmit packet size */
+static void nic_set_tx_pkt_pad(struct nicpf *nic, int size)
+{
+ int lmac;
+ uint64_t lmac_cfg;
+
+ /* Max value that can be set is 60 */
+ if (size > 60)
+ size = 60;
+
+ for (lmac = 0; lmac < (MAX_BGX_PER_CN88XX * MAX_LMAC_PER_BGX); lmac++) {
+ lmac_cfg = nic_reg_read(nic, NIC_PF_LMAC_0_7_CFG | (lmac << 3));
+ lmac_cfg &= ~(0xF << 2);
+ lmac_cfg |= ((size / 4) << 2);
+ nic_reg_write(nic, NIC_PF_LMAC_0_7_CFG | (lmac << 3), lmac_cfg);
+ }
+}
+
+/* Function to check number of LMACs present and set VF to LMAC mapping.
+ * Mapping will be used while initializing channels.
+ */
+static void nic_set_lmac_vf_mapping(struct nicpf *nic)
+{
+ int bgx, bgx_count, next_bgx_lmac = 0;
+ int lmac, lmac_cnt = 0;
+
+ nic->num_vf_en = 0;
+ if (nic->flags & NIC_TNS_ENABLED) {
+ nic->num_vf_en = DEFAULT_NUM_VF_ENABLED;
+ return;
+ }
+
+ bgx_get_count(nic->node, &bgx_count);
+ for (bgx = 0; bgx < NIC_MAX_BGX; bgx++) {
+ if (!(bgx_count & (1 << bgx)))
+ continue;
+ nic->bgx_cnt++;
+ lmac_cnt = bgx_get_lmac_count(nic->node, bgx);
+ for (lmac = 0; lmac < lmac_cnt; lmac++)
+ nic->vf_lmac_map[next_bgx_lmac++] =
+ NIC_SET_VF_LMAC_MAP(bgx, lmac);
+ nic->num_vf_en += lmac_cnt;
+ }
+}
+
+static void nic_init_hw(struct nicpf *nic)
+{
+ int i;
+ uint64_t reg;
+
+ /* Reset NIC, incase if driver is repeatedly inserted and removed */
+ nic_reg_write(nic, NIC_PF_SOFT_RESET, 1);
+
+ /* Enable NIC HW block */
+ nic_reg_write(nic, NIC_PF_CFG, 1);
+
+ if (nic->flags & NIC_TNS_ENABLED) {
+ reg = NIC_TNS_MODE << 7;
+ reg |= 0x06;
+ nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG, reg);
+ reg &= ~0xFull;
+ reg |= 0x07;
+ nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG | (1 << 8), reg);
+ } else {
+ /* Disable TNS mode on both interfaces */
+ reg = NIC_TNS_BYPASS_MODE << 7;
+ reg |= 0x08; /* Block identifier */
+ nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG, reg);
+ reg &= ~0xFull;
+ reg |= 0x09;
+ nic_reg_write(nic, NIC_PF_INTF_0_1_SEND_CFG | (1 << 8), reg);
+ }
+
+ /* PKIND configuration */
+ nic->pkind.minlen = 0;
+ nic->pkind.maxlen = NIC_HW_MAX_FRS + ETH_HLEN;
+ nic->pkind.lenerr_en = 1;
+ nic->pkind.rx_hdr = 0;
+ nic->pkind.hdr_sl = 0;
+
+ for (i = 0; i < NIC_MAX_PKIND; i++)
+ nic_reg_write(nic, NIC_PF_PKIND_0_15_CFG | (i << 3),
+ *(uint64_t *)&nic->pkind);
+
+ nic_set_tx_pkt_pad(nic, NIC_HW_MIN_FRS);
+
+ /* Disable backpressure for now */
+ for (i = 0; i < NIC_MAX_CHANS; i++)
+ nic_reg_write(nic, NIC_PF_CHAN_0_255_TX_CFG | (i << 3), 0);
+
+ /* Timer config */
+ nic_reg_write(nic, NIC_PF_INTR_TIMER_CFG, NICPF_CLK_PER_INT_TICK);
+}
+
+static void nic_config_cpi(struct nicpf *nic, struct cpi_cfg_msg *cfg)
+{
+ uint32_t vnic, bgx, lmac, chan;
+ uint32_t padd, cpi_count = 0;
+ uint64_t cpi_base, cpi, rssi_base, rssi;
+ uint8_t qset, rq_idx = 0;
+
+ vnic = cfg->vf_id;
+ bgx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vnic]);
+ lmac = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vnic]);
+
+ chan = (lmac * MAX_BGX_CHANS_PER_LMAC) + (bgx * NIC_CHANS_PER_INF);
+ cpi_base = (lmac * NIC_MAX_CPI_PER_LMAC) + (bgx * NIC_CPI_PER_BGX);
+ rssi_base = (lmac * nic->rss_ind_tbl_size) + (bgx * NIC_RSSI_PER_BGX);
+
+ /* Rx channel configuration */
+ nic_reg_write(nic, NIC_PF_CHAN_0_255_RX_CFG | (chan << 3),
+ (cfg->cpi_alg << 62) | (cpi_base << 48));
+
+ if (cfg->cpi_alg == CPI_ALG_NONE)
+ cpi_count = 1;
+ else if (cfg->cpi_alg == CPI_ALG_VLAN) /* 3 bits of PCP */
+ cpi_count = 8;
+ else if (cfg->cpi_alg == CPI_ALG_VLAN16) /* 3 bits PCP + DEI */
+ cpi_count = 16;
+ else if (cfg->cpi_alg == CPI_ALG_DIFF) /* 6bits DSCP */
+ cpi_count = NIC_MAX_CPI_PER_LMAC;
+
+ /* RSS Qset, Qidx mapping */
+ qset = cfg->vf_id;
+ rssi = rssi_base;
+ for (; rssi < (rssi_base + cfg->rq_cnt); rssi++) {
+ nic_reg_write(nic, NIC_PF_RSSI_0_4097_RQ | (rssi << 3),
+ (qset << 3) | rq_idx);
+ rq_idx++;
+ }
+
+ rssi = 0;
+ cpi = cpi_base;
+ for (; cpi < (cpi_base + cpi_count); cpi++) {
+ /* Determine port to channel adder */
+ if (cfg->cpi_alg != CPI_ALG_DIFF)
+ padd = cpi % cpi_count;
+ else
+ padd = cpi % 8; /* 3 bits CS out of 6bits DSCP */
+
+ /* Leave RSS_SIZE as '0' to disable RSS */
+ nic_reg_write(nic, NIC_PF_CPI_0_2047_CFG | (cpi << 3),
+ (vnic << 24) | (padd << 16) | (rssi_base + rssi));
+
+ if ((rssi + 1) >= cfg->rq_cnt)
+ continue;
+
+ if (cfg->cpi_alg == CPI_ALG_VLAN)
+ rssi++;
+ else if (cfg->cpi_alg == CPI_ALG_VLAN16)
+ rssi = ((cpi - cpi_base) & 0xe) >> 1;
+ else if (cfg->cpi_alg == CPI_ALG_DIFF)
+ rssi = ((cpi - cpi_base) & 0x38) >> 3;
+ }
+ nic->cpi_base[cfg->vf_id] = cpi_base;
+}
+
+#ifdef VNIC_RSS_SUPPORT
+static void nic_send_rss_size(struct nicpf *nic, int vf)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_RSS_SIZE;
+ mbx.data.rss_size.ind_tbl_size = nic->rss_ind_tbl_size;
+ nic_send_msg_to_vf(nic, vf, &mbx, false);
+}
+
+static void nic_config_rss(struct nicpf *nic, struct rss_cfg_msg *cfg)
+{
+ uint64_t cpi_cfg, cpi_base, rssi_base, rssi;
+ uint8_t qset, idx = 0;
+
+ cpi_base = nic->cpi_base[cfg->vf_id];
+ cpi_cfg = nic_reg_read(nic, NIC_PF_CPI_0_2047_CFG | (cpi_base << 3));
+ rssi_base = cpi_cfg & 0x0FFF;
+
+ rssi = rssi_base + cfg->tbl_offset;
+ qset = cfg->vf_id;
+
+ for (; rssi < (rssi_base + cfg->tbl_len); rssi++) {
+ nic_reg_write(nic, NIC_PF_RSSI_0_4097_RQ | (rssi << 3),
+ (qset << 3) | cfg->ind_tbl[idx]);
+ idx++;
+ }
+
+ cpi_cfg &= ~(0xFULL << 20);
+ cpi_cfg |= (cfg->hash_bits << 20);
+ nic_reg_write(nic, NIC_PF_CPI_0_2047_CFG | (cpi_base << 3), cpi_cfg);
+}
+#endif
+
+/* Transmit channel configuration (TL4 -> TL3 -> Chan)
+ * VNIC0-SQ0 -> TL4(0) -> TL4A(0) -> TL3[0] -> BGX0/LMAC0/Chan0
+ * VNIC1-SQ0 -> TL4(8) -> TL4A(2) -> TL3[2] -> BGX0/LMAC1/Chan0
+ * VNIC2-SQ0 -> TL4(16) -> TL4A(4) -> TL3[4] -> BGX0/LMAC2/Chan0
+ * VNIC3-SQ0 -> TL4(32) -> TL4A(6) -> TL3[6] -> BGX0/LMAC3/Chan0
+ * VNIC4-SQ0 -> TL4(512) -> TL4A(128) -> TL3[128] -> BGX1/LMAC0/Chan0
+ * VNIC5-SQ0 -> TL4(520) -> TL4A(130) -> TL3[130] -> BGX1/LMAC1/Chan0
+ * VNIC6-SQ0 -> TL4(528) -> TL4A(132) -> TL3[132] -> BGX1/LMAC2/Chan0
+ * VNIC7-SQ0 -> TL4(536) -> TL4A(134) -> TL3[134] -> BGX1/LMAC3/Chan0
+ */
+static void nic_tx_channel_cfg(struct nicpf *nic, int vnic, int sq_idx)
+{
+ uint32_t bgx, lmac, tl3, tl4;
+
+ bgx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vnic]);
+ lmac = NIC_GET_LMAC_FROM_VF_LMAC_MAP(nic->vf_lmac_map[vnic]);
+
+ tl4 = (lmac * NIC_TL4_PER_LMAC) + (bgx * NIC_TL4_PER_BGX);
+ tl4 += sq_idx;
+
+ tl3 = tl4 / (NIC_MAX_TL4 / NIC_MAX_TL3);
+ nic_reg_write(nic, NIC_PF_QSET_0_127_SQ_0_7_CFG2 |
+ (vnic << NIC_QS_ID_SHIFT) |
+ (sq_idx << NIC_Q_NUM_SHIFT), tl4);
+ nic_reg_write(nic, NIC_PF_TL4_0_1023_CFG | (tl4 << 3),
+ (vnic << 27) | (sq_idx << 24));
+ nic_reg_write(nic, NIC_PF_TL4A_0_255_CFG | (tl3 << 3), tl3);
+ nic_reg_write(nic, NIC_PF_TL3_0_255_CHAN | (tl3 << 3), lmac << 4);
+}
+
+static irqreturn_t nic_mbx0_intr_handler (int irq, void *nic_irq)
+{
+ int vf;
+ uint16_t vf_per_mbx_reg = 64;
+ uint64_t intr;
+ struct nicpf *nic = (struct nicpf *)nic_irq;
+
+ intr = nic_get_mbx_intr_status(nic, 0);
+ nic_dbg(&nic->pdev->dev, "PF MSIX interrupt Mbox0 0x%llx\n", intr);
+ for (vf = 0; vf < min(nic->num_vf_en, vf_per_mbx_reg); vf++) {
+ if (intr & (1ULL << vf)) {
+ nic_dbg(&nic->pdev->dev, "Intr from VF %d\n", vf);
+ nic_handle_mbx_intr(nic, vf);
+ nic_clear_mbx_intr(nic, vf, 0);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t nic_mbx1_intr_handler (int irq, void *nic_irq)
+{
+ int vf;
+ uint16_t vf_per_mbx_reg = 64;
+ uint64_t intr;
+ struct nicpf *nic = (struct nicpf *)nic_irq;
+
+ if (nic->num_vf_en <= vf_per_mbx_reg)
+ return IRQ_HANDLED;
+
+ intr = nic_get_mbx_intr_status(nic, 1);
+ nic_dbg(&nic->pdev->dev, "PF MSIX interrupt Mbox1 0x%llx\n", intr);
+ for (vf = 0; vf < (nic->num_vf_en - vf_per_mbx_reg); vf++) {
+ if (intr & (1ULL << vf)) {
+ nic_dbg(&nic->pdev->dev,
+ "Intr from VF %d\n", vf + vf_per_mbx_reg);
+ nic_handle_mbx_intr(nic, vf + vf_per_mbx_reg);
+ nic_clear_mbx_intr(nic, vf, 1);
+ }
+ }
+
+ return IRQ_HANDLED;
+}
+
+static int nic_enable_msix(struct nicpf *nic)
+{
+ int i, ret;
+
+ nic->num_vec = NIC_PF_MSIX_VECTORS;
+
+ for (i = 0; i < nic->num_vec; i++)
+ nic->msix_entries[i].entry = i;
+
+ ret = pci_enable_msix(nic->pdev, nic->msix_entries, nic->num_vec);
+ if (ret) {
+ netdev_err(nic->netdev,
+ "Request for #%d msix vectors failed\n",
+ nic->num_vec);
+ return 0;
+ }
+
+ nic->msix_enabled = 1;
+ return 1;
+}
+
+static void nic_disable_msix(struct nicpf *nic)
+{
+ if (nic->msix_enabled) {
+ pci_disable_msix(nic->pdev);
+ nic->msix_enabled = 0;
+ nic->num_vec = 0;
+ }
+}
+
+static int nic_register_interrupts(struct nicpf *nic)
+{
+ int irq, ret = 0;
+
+ /* Enable MSI-X */
+ if (!nic_enable_msix(nic))
+ return 1;
+
+ /* Register mailbox interrupt handlers */
+ ret = request_irq(nic->msix_entries[NIC_PF_INTR_ID_MBOX0].vector,
+ nic_mbx0_intr_handler, 0 , "NIC Mbox0", nic);
+ if (ret)
+ goto fail;
+ else
+ nic->irq_allocated[NIC_PF_INTR_ID_MBOX0] = 1;
+
+ ret = request_irq(nic->msix_entries[NIC_PF_INTR_ID_MBOX1].vector,
+ nic_mbx1_intr_handler, 0 , "NIC Mbox1", nic);
+ if (ret)
+ goto fail;
+ else
+ nic->irq_allocated[NIC_PF_INTR_ID_MBOX1] = 1;
+
+ /* Enable mailbox interrupt */
+ nic_enable_mbx_intr(nic);
+ return 0;
+fail:
+ netdev_err(nic->netdev, "Request irq failed\n");
+ for (irq = 0; irq < nic->num_vec; irq++) {
+ if (nic->irq_allocated[irq])
+ free_irq(nic->msix_entries[irq].vector, nic);
+ nic->irq_allocated[irq] = 0;
+ }
+ return 1;
+}
+
+static void nic_unregister_interrupts(struct nicpf *nic)
+{
+ int irq;
+
+ /* Free registered interrupts */
+ for (irq = 0; irq < nic->num_vec; irq++) {
+ if (nic->irq_allocated[irq])
+ free_irq(nic->msix_entries[irq].vector, nic);
+ nic->irq_allocated[irq] = 0;
+ }
+
+ /* Disable MSI-X */
+ nic_disable_msix(nic);
+}
+
+int nic_sriov_configure(struct pci_dev *pdev, int num_vfs_requested)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct nicpf *nic = netdev_priv(netdev);
+ int err;
+
+ if (nic->num_vf_en == num_vfs_requested)
+ return num_vfs_requested;
+
+ if (nic->flags & NIC_SRIOV_ENABLED) {
+ pci_disable_sriov(pdev);
+ nic->flags &= ~NIC_SRIOV_ENABLED;
+ }
+
+ nic->num_vf_en = 0;
+ if (num_vfs_requested > MAX_NUM_VFS_SUPPORTED)
+ return -EPERM;
+
+ if (num_vfs_requested) {
+ err = pci_enable_sriov(pdev, num_vfs_requested);
+ if (err) {
+ dev_err(&pdev->dev, "SRIOV, Failed to enable %d VFs\n",
+ num_vfs_requested);
+ return err;
+ }
+ nic->num_vf_en = num_vfs_requested;
+ nic->flags |= NIC_SRIOV_ENABLED;
+ }
+
+ return num_vfs_requested;
+}
+
+static int nic_sriov_init(struct pci_dev *pdev, struct nicpf *nic)
+{
+ int pos = 0;
+
+ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
+ if (!pos) {
+ dev_err(&pdev->dev, "SRIOV capability is not found in PCIe config space\n");
+ return 0;
+ }
+
+ pci_read_config_word(pdev, (pos + PCI_SRIOV_TOTAL_VF),
+ &nic->total_vf_cnt);
+ if (nic->total_vf_cnt < nic->num_vf_en)
+ nic->num_vf_en = nic->total_vf_cnt;
+
+ if (nic->total_vf_cnt && pci_enable_sriov(pdev, nic->num_vf_en)) {
+ dev_err(&pdev->dev, "SRIOV enable failed, num VF is %d\n",
+ nic->num_vf_en);
+ nic->num_vf_en = 0;
+ return 0;
+ }
+ dev_info(&pdev->dev, "SRIOV enabled, numer of VF available %d\n",
+ nic->num_vf_en);
+
+ nic->flags |= NIC_SRIOV_ENABLED;
+ return 1;
+}
+
+static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct net_device *netdev;
+ struct nicpf *nic;
+ int err;
+
+ netdev = alloc_etherdev(sizeof(struct nicpf));
+ if (!netdev)
+ return -ENOMEM;
+
+ pci_set_drvdata(pdev, netdev);
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ nic = netdev_priv(netdev);
+ nic->netdev = netdev;
+ nic->pdev = pdev;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ goto exit;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto err_disable_device;
+ }
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get usable DMA configuration\n");
+ goto err_release_regions;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "unable to get 48-bit DMA for consistent allocations\n");
+ goto err_release_regions;
+ }
+
+ /* MAP PF's configuration registers */
+ nic->reg_base = (uint64_t)pci_ioremap_bar(pdev, PCI_CFG_REG_BAR_NUM);
+ if (!nic->reg_base) {
+ dev_err(dev, "Cannot map config register space, aborting\n");
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+ nic->node = NIC_NODE_ID(pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM));
+
+ /* By default set NIC in TNS bypass mode */
+ nic->flags &= ~NIC_TNS_ENABLED;
+ nic_set_lmac_vf_mapping(nic);
+
+ /* Initialize hardware */
+ nic_init_hw(nic);
+
+ /* Set RSS TBL size for each VF */
+ nic->rss_ind_tbl_size = max((NIC_RSSI_COUNT / nic->num_vf_en),
+ NIC_MAX_RSS_IDR_TBL_SIZE);
+ nic->rss_ind_tbl_size = rounddown_pow_of_two(nic->rss_ind_tbl_size);
+
+ /* Register interrupts */
+ if (nic_register_interrupts(nic))
+ goto err_unmap_resources;
+
+ /* Configure SRIOV */
+ if (!nic_sriov_init(pdev, nic))
+ goto err_unmap_resources;
+
+ goto exit;
+
+err_unmap_resources:
+ if (nic->reg_base)
+ iounmap((void *)nic->reg_base);
+err_release_regions:
+ pci_release_regions(pdev);
+err_disable_device:
+ pci_disable_device(pdev);
+exit:
+ return err;
+}
+
+static void nic_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct nicpf *nic;
+
+ if (!netdev)
+ return;
+
+ nic = netdev_priv(netdev);
+
+ nic_unregister_interrupts(nic);
+
+ if (nic->flags & NIC_SRIOV_ENABLED)
+ pci_disable_sriov(pdev);
+
+ pci_set_drvdata(pdev, NULL);
+
+ if (nic->reg_base)
+ iounmap((void *)nic->reg_base);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ free_netdev(netdev);
+}
+
+static struct pci_driver nic_driver = {
+ .name = DRV_NAME,
+ .id_table = nic_id_table,
+ .probe = nic_probe,
+ .remove = nic_remove,
+ .sriov_configure = nic_sriov_configure,
+};
+
+static int __init nic_init_module(void)
+{
+ pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
+
+ return pci_register_driver(&nic_driver);
+}
+
+static void __exit nic_cleanup_module(void)
+{
+ pci_unregister_driver(&nic_driver);
+}
+
+module_init(nic_init_module);
+module_exit(nic_cleanup_module);
diff --git a/drivers/net/ethernet/cavium/thunder/nic_reg.h b/drivers/net/ethernet/cavium/thunder/nic_reg.h
new file mode 100644
index 000000000000..cbf1c9f73ef1
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nic_reg.h
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#ifndef NIC_REG_H
+#define NIC_REG_H
+
+#define NIC_PF_REG_COUNT 29573
+#define NIC_VF_REG_COUNT 249
+
+/* Physical function register offsets */
+#define NIC_PF_CFG (0x0000)
+#define NIC_PF_STATUS (0x0010)
+#define NIC_PF_INTR_TIMER_CFG (0x0030)
+#define NIC_PF_BIST_STATUS (0x0040)
+#define NIC_PF_SOFT_RESET (0x0050)
+#define NIC_PF_TCP_TIMER (0x0060)
+#define NIC_PF_BP_CFG (0x0080)
+#define NIC_PF_RRM_CFG (0x0088)
+#define NIC_PF_CQM_CF (0x00A0)
+#define NIC_PF_CNM_CF (0x00A8)
+#define NIC_PF_CNM_STATUS (0x00B0)
+#define NIC_PF_CQ_AVG_CFG (0x00C0)
+#define NIC_PF_RRM_AVG_CFG (0x00C8)
+#define NIC_PF_INTF_0_1_SEND_CFG (0x0200)
+#define NIC_PF_INTF_0_1_BP_CFG (0x0208)
+#define NIC_PF_INTF_0_1_BP_DIS_0_1 (0x0210)
+#define NIC_PF_INTF_0_1_BP_SW_0_1 (0x0220)
+#define NIC_PF_RBDR_BP_STATE_0_3 (0x0240)
+#define NIC_PF_MAILBOX_INT (0x0410)
+#define NIC_PF_MAILBOX_INT_W1S (0x0430)
+#define NIC_PF_MAILBOX_ENA_W1C (0x0450)
+#define NIC_PF_MAILBOX_ENA_W1S (0x0470)
+#define NIC_PF_RX_ETYPE_0_7 (0x0500)
+#define NIC_PF_PKIND_0_15_CFG (0x0600)
+#define NIC_PF_ECC0_FLIP0 (0x1000)
+#define NIC_PF_ECC1_FLIP0 (0x1008)
+#define NIC_PF_ECC2_FLIP0 (0x1010)
+#define NIC_PF_ECC3_FLIP0 (0x1018)
+#define NIC_PF_ECC0_FLIP1 (0x1080)
+#define NIC_PF_ECC1_FLIP1 (0x1088)
+#define NIC_PF_ECC2_FLIP1 (0x1090)
+#define NIC_PF_ECC3_FLIP1 (0x1098)
+#define NIC_PF_ECC0_CDIS (0x1100)
+#define NIC_PF_ECC1_CDIS (0x1108)
+#define NIC_PF_ECC2_CDIS (0x1110)
+#define NIC_PF_ECC3_CDIS (0x1118)
+#define NIC_PF_BIST0_STATUS (0x1280)
+#define NIC_PF_BIST1_STATUS (0x1288)
+#define NIC_PF_BIST2_STATUS (0x1290)
+#define NIC_PF_BIST3_STATUS (0x1298)
+#define NIC_PF_ECC0_SBE_INT (0x2000)
+#define NIC_PF_ECC0_SBE_INT_W1S (0x2008)
+#define NIC_PF_ECC0_SBE_ENA_W1C (0x2010)
+#define NIC_PF_ECC0_SBE_ENA_W1S (0x2018)
+#define NIC_PF_ECC0_DBE_INT (0x2100)
+#define NIC_PF_ECC0_DBE_INT_W1S (0x2108)
+#define NIC_PF_ECC0_DBE_ENA_W1C (0x2110)
+#define NIC_PF_ECC0_DBE_ENA_W1S (0x2118)
+#define NIC_PF_ECC1_SBE_INT (0x2200)
+#define NIC_PF_ECC1_SBE_INT_W1S (0x2208)
+#define NIC_PF_ECC1_SBE_ENA_W1C (0x2210)
+#define NIC_PF_ECC1_SBE_ENA_W1S (0x2218)
+#define NIC_PF_ECC1_DBE_INT (0x2300)
+#define NIC_PF_ECC1_DBE_INT_W1S (0x2308)
+#define NIC_PF_ECC1_DBE_ENA_W1C (0x2310)
+#define NIC_PF_ECC1_DBE_ENA_W1S (0x2318)
+#define NIC_PF_ECC2_SBE_INT (0x2400)
+#define NIC_PF_ECC2_SBE_INT_W1S (0x2408)
+#define NIC_PF_ECC2_SBE_ENA_W1C (0x2410)
+#define NIC_PF_ECC2_SBE_ENA_W1S (0x2418)
+#define NIC_PF_ECC2_DBE_INT (0x2500)
+#define NIC_PF_ECC2_DBE_INT_W1S (0x2508)
+#define NIC_PF_ECC2_DBE_ENA_W1C (0x2510)
+#define NIC_PF_ECC2_DBE_ENA_W1S (0x2518)
+#define NIC_PF_ECC3_SBE_INT (0x2600)
+#define NIC_PF_ECC3_SBE_INT_W1S (0x2608)
+#define NIC_PF_ECC3_SBE_ENA_W1C (0x2610)
+#define NIC_PF_ECC3_SBE_ENA_W1S (0x2618)
+#define NIC_PF_ECC3_DBE_INT (0x2700)
+#define NIC_PF_ECC3_DBE_INT_W1S (0x2708)
+#define NIC_PF_ECC3_DBE_ENA_W1C (0x2710)
+#define NIC_PF_ECC3_DBE_ENA_W1S (0x2718)
+#define NIC_PF_CPI_0_2047_CFG (0x200000)
+#define NIC_PF_RSSI_0_4097_RQ (0x220000)
+#define NIC_PF_LMAC_0_7_CFG (0x240000)
+#define NIC_PF_LMAC_0_7_SW_XOFF (0x242000)
+#define NIC_PF_LMAC_0_7_CREDIT (0x244000)
+#define NIC_PF_CHAN_0_255_TX_CFG (0x400000)
+#define NIC_PF_CHAN_0_255_RX_CFG (0x420000)
+#define NIC_PF_CHAN_0_255_SW_XOFF (0x440000)
+#define NIC_PF_CHAN_0_255_CREDIT (0x460000)
+#define NIC_PF_CHAN_0_255_RX_BP_CFG (0x480000)
+#define NIC_PF_SW_SYNC_RX (0x490000)
+#define NIC_PF_SW_SYNC_RX_DONE (0x490008)
+#define NIC_PF_TL2_0_63_CFG (0x500000)
+#define NIC_PF_TL2_0_63_PRI (0x520000)
+#define NIC_PF_TL2_0_63_SH_STATUS (0x580000)
+#define NIC_PF_TL3A_0_63_CFG (0x5F0000)
+#define NIC_PF_TL3_0_255_CFG (0x600000)
+#define NIC_PF_TL3_0_255_CHAN (0x620000)
+#define NIC_PF_TL3_0_255_PIR (0x640000)
+#define NIC_PF_TL3_0_255_SW_XOFF (0x660000)
+#define NIC_PF_TL3_0_255_CNM_RATE (0x680000)
+#define NIC_PF_TL3_0_255_SH_STATUS (0x6A0000)
+#define NIC_PF_TL4A_0_255_CFG (0x6F0000)
+#define NIC_PF_TL4_0_1023_CFG (0x800000)
+#define NIC_PF_TL4_0_1023_SW_XOFF (0x820000)
+#define NIC_PF_TL4_0_1023_SH_STATUS (0x840000)
+#define NIC_PF_TL4A_0_1023_CNM_RATE (0x880000)
+#define NIC_PF_TL4A_0_1023_CNM_STATUS (0x8A0000)
+#define NIC_PF_VF_0_127_MAILBOX_0_7 (0x20002000)
+#define NIC_PF_VNIC_0_127_TX_STAT_0_4 (0x20004000)
+#define NIC_PF_VNIC_0_127_RX_STAT_0_13 (0x20004100)
+#define NIC_PF_QSET_0_127_LOCK_0_15 (0x20006000)
+#define NIC_PF_QSET_0_127_CFG (0x20010000)
+#define NIC_PF_QSET_0_127_RQ_0_7_CFG (0x20010400)
+#define NIC_PF_QSET_0_127_RQ_0_7_DROP_CFG (0x20010420)
+#define NIC_PF_QSET_0_127_RQ_0_7_BP_CFG (0x20010500)
+#define NIC_PF_QSET_0_127_RQ_0_7_STAT_0_1 (0x20010600)
+#define NIC_PF_QSET_0_127_SQ_0_7_CFG (0x20010C00)
+#define NIC_PF_QSET_0_127_SQ_0_7_CFG2 (0x20010C08)
+#define NIC_PF_QSET_0_127_SQ_0_7_STAT_0_1 (0x20010D00)
+
+#define NIC_PF_MSIX_VEC_0_18_ADDR (0x000000)
+#define NIC_PF_MSIX_VEC_0_CTL (0x000008)
+#define NIC_PF_MSIX_PBA_0 (0x0F0000)
+
+/* Virtual function register offsets */
+#define NIC_VNIC_CFG (0x000020)
+#define NIC_VF_PF_MAILBOX_0_7 (0x000100)
+#define NIC_VF_INT (0x000200)
+#define NIC_VF_INT_W1S (0x000220)
+#define NIC_VF_ENA_W1C (0x000240)
+#define NIC_VF_ENA_W1S (0x000260)
+
+#define NIC_VNIC_RSS_CFG (0x0020E0)
+#define NIC_VNIC_RSS_KEY_0_4 (0x002200)
+#define NIC_VNIC_TX_STAT_0_4 (0x004000)
+#define NIC_VNIC_RX_STAT_0_13 (0x004100)
+#define NIC_QSET_RQ_GEN_CFG (0x010010)
+
+#define NIC_QSET_CQ_0_7_CFG (0x010400)
+#define NIC_QSET_CQ_0_7_CFG2 (0x010408)
+#define NIC_QSET_CQ_0_7_THRESH (0x010410)
+#define NIC_QSET_CQ_0_7_BASE (0x010420)
+#define NIC_QSET_CQ_0_7_HEAD (0x010428)
+#define NIC_QSET_CQ_0_7_TAIL (0x010430)
+#define NIC_QSET_CQ_0_7_DOOR (0x010438)
+#define NIC_QSET_CQ_0_7_STATUS (0x010440)
+#define NIC_QSET_CQ_0_7_STATUS2 (0x010448)
+#define NIC_QSET_CQ_0_7_DEBUG (0x010450)
+
+#define NIC_QSET_RQ_0_7_CFG (0x010600)
+#define NIC_QSET_RQ_0_7_STAT_0_1 (0x010700)
+
+#define NIC_QSET_SQ_0_7_CFG (0x010800)
+#define NIC_QSET_SQ_0_7_THRESH (0x010810)
+#define NIC_QSET_SQ_0_7_BASE (0x010820)
+#define NIC_QSET_SQ_0_7_HEAD (0x010828)
+#define NIC_QSET_SQ_0_7_TAIL (0x010830)
+#define NIC_QSET_SQ_0_7_DOOR (0x010838)
+#define NIC_QSET_SQ_0_7_STATUS (0x010840)
+#define NIC_QSET_SQ_0_7_DEBUG (0x010848)
+#define NIC_QSET_SQ_0_7_CNM_CHG (0x010860)
+#define NIC_QSET_SQ_0_7_STAT_0_1 (0x010900)
+
+#define NIC_QSET_RBDR_0_1_CFG (0x010C00)
+#define NIC_QSET_RBDR_0_1_THRESH (0x010C10)
+#define NIC_QSET_RBDR_0_1_BASE (0x010C20)
+#define NIC_QSET_RBDR_0_1_HEAD (0x010C28)
+#define NIC_QSET_RBDR_0_1_TAIL (0x010C30)
+#define NIC_QSET_RBDR_0_1_DOOR (0x010C38)
+#define NIC_QSET_RBDR_0_1_STATUS0 (0x010C40)
+#define NIC_QSET_RBDR_0_1_STATUS1 (0x010C48)
+#define NIC_QSET_RBDR_0_1_PREFETCH_STATUS (0x010C50)
+
+#define NIC_VF_MSIX_VECTOR_0_19_ADDR (0x000000)
+#define NIC_VF_MSIX_VECTOR_0_19_CTL (0x000008)
+#define NIC_VF_MSIX_PBA (0x0F0000)
+
+/* Offsets within registers */
+#define NIC_MSIX_VEC_SHIFT 4
+#define NIC_Q_NUM_SHIFT 18
+#define NIC_QS_ID_SHIFT 21
+#define NIC_VF_NUM_SHIFT 21
+
+/* Port kind configuration register */
+struct pkind_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_42_63:22;
+ uint64_t hdr_sl:5; /* Header skip length */
+ uint64_t rx_hdr:3; /* TNS Receive header present */
+ uint64_t lenerr_en:1; /* L2 length error check enable */
+ uint64_t reserved_32_32:1;
+ uint64_t maxlen:16; /* Max frame size */
+ uint64_t minlen:16; /* Min frame size */
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t minlen:16;
+ uint64_t maxlen:16;
+ uint64_t reserved_32_32:1;
+ uint64_t lenerr_en:1;
+ uint64_t rx_hdr:3;
+ uint64_t hdr_sl:5;
+ uint64_t reserved_42_63:22;
+#endif
+};
+
+#endif /* NIC_REG_H */
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
new file mode 100644
index 000000000000..ef53a0599f53
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
@@ -0,0 +1,478 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+/* ETHTOOL Support for VNIC_VF Device*/
+
+#include <linux/pci.h>
+
+#include "nic_reg.h"
+#include "nic.h"
+#include "nicvf_queues.h"
+#include "q_struct.h"
+
+#define DRV_NAME "thunder-nicvf"
+#define DRV_VERSION "1.0"
+
+struct nicvf_stat {
+ char name[ETH_GSTRING_LEN];
+ unsigned int index;
+};
+
+#define NICVF_HW_STAT(stat) { \
+ .name = #stat, \
+ .index = offsetof(struct nicvf_hw_stats, stat) / sizeof(u64), \
+}
+
+#define NICVF_DRV_STAT(stat) { \
+ .name = #stat, \
+ .index = offsetof(struct nicvf_drv_stats, stat) / sizeof(u64), \
+}
+
+static const struct nicvf_stat nicvf_hw_stats[] = {
+ NICVF_HW_STAT(rx_bytes_ok),
+ NICVF_HW_STAT(rx_ucast_frames_ok),
+ NICVF_HW_STAT(rx_bcast_frames_ok),
+ NICVF_HW_STAT(rx_mcast_frames_ok),
+ NICVF_HW_STAT(rx_fcs_errors),
+ NICVF_HW_STAT(rx_l2_errors),
+ NICVF_HW_STAT(rx_drop_red),
+ NICVF_HW_STAT(rx_drop_red_bytes),
+ NICVF_HW_STAT(rx_drop_overrun),
+ NICVF_HW_STAT(rx_drop_overrun_bytes),
+ NICVF_HW_STAT(rx_drop_bcast),
+ NICVF_HW_STAT(rx_drop_mcast),
+ NICVF_HW_STAT(rx_drop_l3_bcast),
+ NICVF_HW_STAT(rx_drop_l3_mcast),
+ NICVF_HW_STAT(tx_bytes_ok),
+ NICVF_HW_STAT(tx_ucast_frames_ok),
+ NICVF_HW_STAT(tx_bcast_frames_ok),
+ NICVF_HW_STAT(tx_mcast_frames_ok),
+};
+
+static const struct nicvf_stat nicvf_drv_stats[] = {
+ NICVF_DRV_STAT(rx_frames_ok),
+ NICVF_DRV_STAT(rx_frames_64),
+ NICVF_DRV_STAT(rx_frames_127),
+ NICVF_DRV_STAT(rx_frames_255),
+ NICVF_DRV_STAT(rx_frames_511),
+ NICVF_DRV_STAT(rx_frames_1023),
+ NICVF_DRV_STAT(rx_frames_1518),
+ NICVF_DRV_STAT(rx_frames_jumbo),
+ NICVF_DRV_STAT(rx_drops),
+ NICVF_DRV_STAT(tx_frames_ok),
+ NICVF_DRV_STAT(tx_busy),
+ NICVF_DRV_STAT(tx_tso),
+ NICVF_DRV_STAT(tx_drops),
+};
+
+static const struct nicvf_stat nicvf_queue_stats[] = {
+ { "bytes", 0 },
+ { "frames", 1 },
+};
+
+static const unsigned int nicvf_n_hw_stats = ARRAY_SIZE(nicvf_hw_stats);
+static const unsigned int nicvf_n_drv_stats = ARRAY_SIZE(nicvf_drv_stats);
+static const unsigned int nicvf_n_queue_stats = ARRAY_SIZE(nicvf_queue_stats);
+
+static int nicvf_get_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ cmd->supported = (SUPPORTED_1000baseT_Full |
+ SUPPORTED_100baseT_Full |
+ SUPPORTED_10baseT_Full |
+ SUPPORTED_10000baseT_Full | SUPPORTED_FIBRE);
+
+ cmd->advertising = (ADVERTISED_1000baseT_Full |
+ ADVERTISED_100baseT_Full |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_10000baseT_Full | ADVERTISED_FIBRE);
+
+ cmd->port = PORT_FIBRE;
+ cmd->transceiver = XCVR_EXTERNAL;
+ if (netif_carrier_ok(netdev)) {
+ ethtool_cmd_speed_set(cmd, SPEED_10000);
+ cmd->duplex = DUPLEX_FULL;
+ } else {
+ ethtool_cmd_speed_set(cmd, -1);
+ cmd->duplex = -1;
+ }
+
+ cmd->autoneg = AUTONEG_DISABLE;
+ ethtool_cmd_speed_set(cmd, SPEED_1000);
+ return 0;
+}
+
+static int nicvf_set_settings(struct net_device *netdev,
+ struct ethtool_cmd *cmd)
+{
+ return -EOPNOTSUPP;
+
+ /* 10G full duplex setting supported only */
+ if (cmd->autoneg == AUTONEG_ENABLE)
+ return -EOPNOTSUPP;
+
+ if (ethtool_cmd_speed(cmd) != SPEED_10000)
+ return -EOPNOTSUPP;
+
+ if (cmd->duplex != DUPLEX_FULL)
+ return -EOPNOTSUPP;
+
+ return 0;
+}
+
+static void nicvf_get_drvinfo(struct net_device *netdev,
+ struct ethtool_drvinfo *info)
+{
+ struct nicvf *nic = netdev_priv(netdev);
+
+ strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
+ strlcpy(info->version, DRV_VERSION, sizeof(info->version));
+ strlcpy(info->bus_info, pci_name(nic->pdev), sizeof(info->bus_info));
+}
+
+static void nicvf_get_strings(struct net_device *netdev, u32 sset, u8 *data)
+{
+ int stats, qidx;
+
+ if (sset != ETH_SS_STATS)
+ return;
+
+ for (stats = 0; stats < nicvf_n_hw_stats; stats++) {
+ memcpy(data, nicvf_hw_stats[stats].name, ETH_GSTRING_LEN);
+ data += ETH_GSTRING_LEN;
+ }
+
+ for (stats = 0; stats < nicvf_n_drv_stats; stats++) {
+ memcpy(data, nicvf_drv_stats[stats].name, ETH_GSTRING_LEN);
+ data += ETH_GSTRING_LEN;
+ }
+
+ for (qidx = 0; qidx < MAX_RCV_QUEUES_PER_QS; qidx++) {
+ for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
+ sprintf(data, "rxq%d: %s", qidx,
+ nicvf_queue_stats[stats].name);
+ data += ETH_GSTRING_LEN;
+ }
+ }
+
+ for (qidx = 0; qidx < MAX_SND_QUEUES_PER_QS; qidx++) {
+ for (stats = 0; stats < nicvf_n_queue_stats; stats++) {
+ sprintf(data, "txq%d: %s", qidx,
+ nicvf_queue_stats[stats].name);
+ data += ETH_GSTRING_LEN;
+ }
+ }
+}
+
+static int nicvf_get_sset_count(struct net_device *netdev, int sset)
+{
+ if (sset != ETH_SS_STATS)
+ return -EINVAL;
+
+ return nicvf_n_hw_stats + nicvf_n_drv_stats +
+ (nicvf_n_queue_stats *
+ (MAX_RCV_QUEUES_PER_QS + MAX_SND_QUEUES_PER_QS));
+}
+
+static void nicvf_get_ethtool_stats(struct net_device *netdev,
+ struct ethtool_stats *stats, u64 *data)
+{
+ struct nicvf *nic = netdev_priv(netdev);
+ int stat, qidx;
+
+ nicvf_update_stats(nic);
+
+ for (stat = 0; stat < nicvf_n_hw_stats; stat++)
+ *(data++) = ((u64 *)&nic->stats)
+ [nicvf_hw_stats[stat].index];
+ for (stat = 0; stat < nicvf_n_drv_stats; stat++)
+ *(data++) = ((u64 *)&nic->drv_stats)
+ [nicvf_drv_stats[stat].index];
+
+ for (qidx = 0; qidx < MAX_RCV_QUEUES_PER_QS; qidx++) {
+ for (stat = 0; stat < nicvf_n_queue_stats; stat++)
+ *(data++) = ((u64 *)&nic->qs->rq[qidx].stats)
+ [nicvf_queue_stats[stat].index];
+ }
+
+ for (qidx = 0; qidx < MAX_SND_QUEUES_PER_QS; qidx++) {
+ for (stat = 0; stat < nicvf_n_queue_stats; stat++)
+ *(data++) = ((u64 *)&nic->qs->sq[qidx].stats)
+ [nicvf_queue_stats[stat].index];
+ }
+}
+
+static int nicvf_get_regs_len(struct net_device *dev)
+{
+ return sizeof(uint64_t) * NIC_VF_REG_COUNT;
+}
+
+static void nicvf_get_regs(struct net_device *dev,
+ struct ethtool_regs *regs, void *reg)
+{
+ struct nicvf *nic = netdev_priv(dev);
+ uint64_t *p = (uint64_t *)reg;
+ uint64_t reg_offset;
+ int mbox, key, stat, q;
+ int i = 0;
+
+ regs->version = 0;
+ memset(p, 0, NIC_VF_REG_COUNT);
+
+ p[i++] = nicvf_reg_read(nic, NIC_VNIC_CFG);
+ /* Mailbox registers */
+ for (mbox = 0; mbox < NIC_PF_VF_MAILBOX_SIZE; mbox++)
+ p[i++] = nicvf_reg_read(nic,
+ NIC_VF_PF_MAILBOX_0_7 | (mbox << 3));
+
+ p[i++] = nicvf_reg_read(nic, NIC_VF_INT);
+ p[i++] = nicvf_reg_read(nic, NIC_VF_INT_W1S);
+ p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1C);
+ p[i++] = nicvf_reg_read(nic, NIC_VF_ENA_W1S);
+ p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_CFG);
+
+ for (key = 0; key < RSS_HASH_KEY_SIZE; key++)
+ p[i++] = nicvf_reg_read(nic, NIC_VNIC_RSS_KEY_0_4 | (key << 3));
+
+ /* Tx/Rx statistics */
+ for (stat = 0; stat < TX_STATS_ENUM_LAST; stat++)
+ p[i++] = nicvf_reg_read(nic,
+ NIC_VNIC_TX_STAT_0_4 | (stat << 3));
+
+ for (i = 0; i < RX_STATS_ENUM_LAST; i++)
+ p[i++] = nicvf_reg_read(nic,
+ NIC_VNIC_RX_STAT_0_13 | (stat << 3));
+
+ p[i++] = nicvf_reg_read(nic, NIC_QSET_RQ_GEN_CFG);
+
+ /* All completion queue's registers */
+ for (q = 0; q < MAX_CMP_QUEUES_PER_QS; q++) {
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_CFG2, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_THRESH, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_BASE, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_TAIL, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DOOR, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS2, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_DEBUG, q);
+ }
+
+ /* All receive queue's registers */
+ for (q = 0; q < MAX_RCV_QUEUES_PER_QS; q++) {
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RQ_0_7_CFG, q);
+ p[i++] = nicvf_queue_reg_read(nic,
+ NIC_QSET_RQ_0_7_STAT_0_1, q);
+ reg_offset = NIC_QSET_RQ_0_7_STAT_0_1 | (1 << 3);
+ p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
+ }
+
+ for (q = 0; q < MAX_SND_QUEUES_PER_QS; q++) {
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_THRESH, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_BASE, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_TAIL, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DOOR, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STATUS, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_DEBUG, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CNM_CHG, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_STAT_0_1, q);
+ reg_offset = NIC_QSET_SQ_0_7_STAT_0_1 | (1 << 3);
+ p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
+ }
+
+ for (q = 0; q < MAX_RCV_BUF_DESC_RINGS_PER_QS; q++) {
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_CFG, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_THRESH, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_BASE, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_HEAD, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_TAIL, q);
+ p[i++] = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_DOOR, q);
+ p[i++] = nicvf_queue_reg_read(nic,
+ NIC_QSET_RBDR_0_1_STATUS0, q);
+ p[i++] = nicvf_queue_reg_read(nic,
+ NIC_QSET_RBDR_0_1_STATUS1, q);
+ reg_offset = NIC_QSET_RBDR_0_1_PREFETCH_STATUS;
+ p[i++] = nicvf_queue_reg_read(nic, reg_offset, q);
+ }
+}
+
+#ifdef VNIC_RSS_SUPPORT
+static int nicvf_get_rss_hash_opts(struct nicvf *nic,
+ struct ethtool_rxnfc *info)
+{
+ info->data = 0;
+
+ switch (info->flow_type) {
+ case TCP_V4_FLOW:
+ case TCP_V6_FLOW:
+ case UDP_V4_FLOW:
+ case UDP_V6_FLOW:
+ case SCTP_V4_FLOW:
+ case SCTP_V6_FLOW:
+ info->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3;
+ case IPV4_FLOW:
+ case IPV6_FLOW:
+ info->data |= RXH_IP_SRC | RXH_IP_DST;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nicvf_get_rxnfc(struct net_device *dev,
+ struct ethtool_rxnfc *info, uint32_t *rules)
+{
+ struct nicvf *nic = netdev_priv(dev);
+ int ret = -EOPNOTSUPP;
+
+ switch (info->cmd) {
+ case ETHTOOL_GRXRINGS:
+ info->data = nic->qs->rq_cnt;
+ ret = 0;
+ break;
+ case ETHTOOL_GRXFH:
+ return nicvf_get_rss_hash_opts(nic, info);
+ default:
+ break;
+ }
+ return ret;
+}
+
+static u32 nicvf_get_rxfh_key_size(struct net_device *netdev)
+{
+ return RSS_HASH_KEY_SIZE;
+}
+
+static u32 nicvf_get_rxfh_indir_size(struct net_device *dev)
+{
+ struct nicvf *nic = netdev_priv(dev);
+
+ return nic->rss_info.rss_size;
+}
+
+static int nicvf_get_rxfh(struct net_device *dev, u32 *indir, u8 *hkey)
+{
+ struct nicvf *nic = netdev_priv(dev);
+ struct nicvf_rss_info *rss = &nic->rss_info;
+ int idx;
+
+ if (indir) {
+ for (idx = 0; idx < rss->rss_size; idx++)
+ indir[idx] = rss->ind_tbl[idx];
+ }
+
+ if (hkey)
+ memcpy(hkey, rss->key, RSS_HASH_KEY_SIZE);
+
+ return 0;
+}
+
+static int nicvf_set_rxfh(struct net_device *dev, const u32 *indir,
+ const u8 *hkey)
+{
+ struct nicvf *nic = netdev_priv(dev);
+ struct nicvf_rss_info *rss = &nic->rss_info;
+ int idx;
+
+ if ((nic->qs->rq_cnt <= 1) || (nic->cpi_alg != CPI_ALG_NONE)) {
+ rss->enable = false;
+ rss->hash_bits = 0;
+ return -EIO;
+ }
+
+ rss->enable = true;
+ if (indir) {
+ for (idx = 0; idx < rss->rss_size; idx++)
+ rss->ind_tbl[idx] = indir[idx];
+ }
+
+ nicvf_config_rss(nic);
+ return 0;
+}
+#endif
+
+/* Get no of queues device supports and current queue count */
+static void nicvf_get_channels(struct net_device *dev,
+ struct ethtool_channels *channel)
+{
+ struct nicvf *nic = netdev_priv(dev);
+
+ memset(channel, 0, sizeof(*channel));
+
+ channel->max_rx = MAX_RCV_QUEUES_PER_QS;
+ channel->max_tx = MAX_SND_QUEUES_PER_QS;
+
+ channel->rx_count = nic->qs->rq_cnt;
+ channel->tx_count = nic->qs->sq_cnt;
+}
+
+/* Set no of Tx, Rx queues to be used */
+static int nicvf_set_channels(struct net_device *dev,
+ struct ethtool_channels *channel)
+{
+ struct nicvf *nic = netdev_priv(dev);
+ int err = 0;
+
+ if (!channel->rx_count || !channel->tx_count)
+ return -EINVAL;
+ if (channel->rx_count > MAX_RCV_QUEUES_PER_QS)
+ return -EINVAL;
+ if (channel->tx_count > MAX_SND_QUEUES_PER_QS)
+ return -EINVAL;
+
+ nic->qs->rq_cnt = channel->rx_count;
+ nic->qs->sq_cnt = channel->tx_count;
+ nic->qs->cq_cnt = nic->qs->sq_cnt;
+
+ err = nicvf_set_real_num_queues(dev, nic->qs->sq_cnt, nic->qs->rq_cnt);
+ if (err)
+ return err;
+
+ if (!netif_running(dev))
+ return err;
+
+ nicvf_stop(dev);
+ nicvf_open(dev);
+ netdev_info(dev, "Setting num Tx rings to %d, Rx rings to %d success\n",
+ nic->qs->sq_cnt, nic->qs->rq_cnt);
+
+ return err;
+}
+
+static const struct ethtool_ops nicvf_ethtool_ops = {
+ .get_settings = nicvf_get_settings,
+ .set_settings = nicvf_set_settings,
+ .get_link = ethtool_op_get_link,
+ .get_drvinfo = nicvf_get_drvinfo,
+ .get_strings = nicvf_get_strings,
+ .get_sset_count = nicvf_get_sset_count,
+ .get_ethtool_stats = nicvf_get_ethtool_stats,
+ .get_regs_len = nicvf_get_regs_len,
+ .get_regs = nicvf_get_regs,
+#ifdef VNIC_RSS_SUPPORT
+ .get_rxnfc = nicvf_get_rxnfc,
+ .get_rxfh_key_size = nicvf_get_rxfh_key_size,
+ .get_rxfh_indir_size = nicvf_get_rxfh_indir_size,
+ .get_rxfh = nicvf_get_rxfh,
+ .set_rxfh = nicvf_set_rxfh,
+#endif
+ .get_channels = nicvf_get_channels,
+ .set_channels = nicvf_set_channels,
+ .get_ts_info = ethtool_op_get_ts_info,
+};
+
+void nicvf_set_ethtool_ops(struct net_device *netdev)
+{
+ netdev->ethtool_ops = &nicvf_ethtool_ops;
+}
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_main.c b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
new file mode 100644
index 000000000000..69d4f0b2d339
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_main.c
@@ -0,0 +1,1326 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/ethtool.h>
+#include <linux/log2.h>
+
+#include "nic_reg.h"
+#include "nic.h"
+#include "nicvf_queues.h"
+
+#define DRV_NAME "thunder-nicvf"
+#define DRV_VERSION "1.0"
+
+/* Supported devices */
+static const struct pci_device_id nicvf_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_NIC_VF) },
+ { 0, } /* end of table */
+};
+
+MODULE_AUTHOR("Sunil Goutham");
+MODULE_DESCRIPTION("Cavium Thunder NIC Virtual Function Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, nicvf_id_table);
+
+static int cpi_alg = CPI_ALG_NONE;
+module_param(cpi_alg, int, S_IRUGO);
+MODULE_PARM_DESC(cpi_alg,
+ "PFC algorithm (0=none, 1=VLAN, 2=VLAN16, 3=IP Diffserv)");
+#ifdef VNIC_RSS_SUPPORT
+static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
+module_param(rss_config, int, S_IRUGO);
+MODULE_PARM_DESC(rss_config,
+ "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
+#endif
+
+static int nicvf_enable_msix(struct nicvf *nic);
+static netdev_tx_t nicvf_xmit(struct sk_buff *skb, struct net_device *netdev);
+
+static void nicvf_dump_packet(struct sk_buff *skb)
+{
+#ifdef NICVF_DUMP_PACKET
+ int i;
+
+ for (i = 0; i < skb->len; i++) {
+ if (!(i % 16))
+ pr_cont("\n");
+ pr_debug("%02x ", (u_char)skb->data[i]);
+ }
+#endif
+}
+
+#ifdef NICVF_ETHTOOL_ENABLE
+static void nicvf_set_rx_frame_cnt(struct nicvf *nic, struct sk_buff *skb)
+{
+ if (skb->len <= 64)
+ nic->drv_stats.rx_frames_64++;
+ else if ((skb->len > 64) && (skb->len <= 127))
+ nic->drv_stats.rx_frames_127++;
+ else if ((skb->len > 127) && (skb->len <= 255))
+ nic->drv_stats.rx_frames_255++;
+ else if ((skb->len > 255) && (skb->len <= 511))
+ nic->drv_stats.rx_frames_511++;
+ else if ((skb->len > 511) && (skb->len <= 1023))
+ nic->drv_stats.rx_frames_1023++;
+ else if ((skb->len > 1023) && (skb->len <= 1518))
+ nic->drv_stats.rx_frames_1518++;
+ else if (skb->len > 1518)
+ nic->drv_stats.rx_frames_jumbo++;
+}
+#endif
+
+/* Register read/write APIs */
+void nicvf_reg_write(struct nicvf *nic, uint64_t offset, uint64_t val)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ writeq_relaxed(val, (void *)addr);
+}
+
+uint64_t nicvf_reg_read(struct nicvf *nic, uint64_t offset)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ return readq_relaxed((void *)addr);
+}
+
+void nicvf_queue_reg_write(struct nicvf *nic, uint64_t offset,
+ uint64_t qidx, uint64_t val)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ writeq_relaxed(val, (void *)(addr + (qidx << NIC_Q_NUM_SHIFT)));
+}
+
+uint64_t nicvf_queue_reg_read(struct nicvf *nic, uint64_t offset, uint64_t qidx)
+{
+ uint64_t addr = nic->reg_base + offset;
+
+ return readq_relaxed((void *)(addr + (qidx << NIC_Q_NUM_SHIFT)));
+}
+
+/* VF -> PF mailbox communication */
+static bool pf_ready_to_rcv_msg;
+static bool pf_acked;
+static bool pf_nacked;
+
+int nicvf_lock_mbox(struct nicvf *nic)
+{
+ int timeout = NIC_PF_VF_MBX_TIMEOUT;
+ int sleep = 10;
+ uint64_t lock, mbx_addr;
+
+ mbx_addr = NIC_VF_PF_MAILBOX_0_7 + NIC_PF_VF_MBX_LOCK_OFFSET;
+ lock = NIC_PF_VF_MBX_LOCK_VAL(nicvf_reg_read(nic, mbx_addr));
+ while (lock) {
+ msleep(sleep);
+ lock = NIC_PF_VF_MBX_LOCK_VAL(nicvf_reg_read(nic, mbx_addr));
+ timeout -= sleep;
+ if (!timeout) {
+ netdev_err(nic->netdev,
+ "VF%d Couldn't lock mailbox\n", nic->vf_id);
+ return 0;
+ }
+ }
+ nicvf_reg_write(nic, mbx_addr, NIC_PF_VF_MBX_LOCK_SET(lock));
+ return 1;
+}
+
+void nicvf_release_mbx(struct nicvf *nic)
+{
+ uint64_t mbx_addr, lock;
+
+ mbx_addr = NIC_VF_PF_MAILBOX_0_7 + NIC_PF_VF_MBX_LOCK_OFFSET;
+ lock = nicvf_reg_read(nic, mbx_addr);
+ nicvf_reg_write(nic, mbx_addr, NIC_PF_VF_MBX_LOCK_CLEAR(lock));
+}
+
+int nicvf_send_msg_to_pf(struct nicvf *nic, struct nic_mbx *mbx)
+{
+ int i, timeout = NIC_PF_VF_MBX_TIMEOUT;
+ int sleep = 10;
+ uint64_t *msg;
+ uint64_t mbx_addr;
+
+ if (!nicvf_lock_mbox(nic))
+ return -EBUSY;
+
+ pf_acked = false;
+ pf_nacked = false;
+ mbx->mbx_trigger_intr = 1;
+ msg = (uint64_t *)mbx;
+ mbx_addr = nic->reg_base + NIC_VF_PF_MAILBOX_0_7;
+
+ for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++)
+ writeq_relaxed(*(msg + i), (void *)(mbx_addr + (i * 8)));
+ nicvf_release_mbx(nic);
+
+ /* Wait for previous message to be acked, timeout 5sec */
+ while (!pf_acked) {
+ if (pf_nacked)
+ return -EINVAL;
+ msleep(sleep);
+ if (pf_acked)
+ break;
+ timeout -= sleep;
+ if (!timeout) {
+ netdev_err(nic->netdev,
+ "PF didn't ack to mbox msg %d from VF%d\n",
+ (mbx->msg & 0xFF), nic->vf_id);
+ return -EBUSY;
+ }
+ }
+ return 0;
+}
+
+/* Checks if VF is able to comminicate with PF
+* and also gets the VNIC number this VF is associated to.
+*/
+static int nicvf_check_pf_ready(struct nicvf *nic)
+{
+ int timeout = 5000, sleep = 20;
+ uint64_t mbx_addr = NIC_VF_PF_MAILBOX_0_7;
+
+ pf_ready_to_rcv_msg = false;
+
+ nicvf_reg_write(nic, mbx_addr, NIC_PF_VF_MSG_READY);
+
+ mbx_addr += (NIC_PF_VF_MAILBOX_SIZE - 1) * 8;
+ nicvf_reg_write(nic, mbx_addr, 1ULL);
+
+ while (!pf_ready_to_rcv_msg) {
+ msleep(sleep);
+ if (pf_ready_to_rcv_msg)
+ break;
+ timeout -= sleep;
+ if (!timeout) {
+ netdev_err(nic->netdev,
+ "PF didn't respond to READY msg\n");
+ return 0;
+ }
+ }
+ return 1;
+}
+
+static void nicvf_handle_mbx_intr(struct nicvf *nic)
+{
+ struct nic_mbx mbx = {};
+ uint64_t *mbx_data;
+ uint64_t mbx_addr;
+ int i;
+
+ mbx_addr = NIC_VF_PF_MAILBOX_0_7;
+ mbx_data = (uint64_t *)&mbx;
+
+ for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) {
+ *mbx_data = nicvf_reg_read(nic, mbx_addr);
+ mbx_data++;
+ mbx_addr += NIC_PF_VF_MAILBOX_SIZE;
+ }
+
+ switch (mbx.msg & NIC_PF_VF_MBX_MSG_MASK) {
+ case NIC_PF_VF_MSG_READY:
+ pf_ready_to_rcv_msg = true;
+ nic->vf_id = mbx.data.nic_cfg.vf_id & 0x7F;
+ nic->tns_mode = mbx.data.nic_cfg.tns_mode & 0x7F;
+ break;
+ case NIC_PF_VF_MSG_ACK:
+ pf_acked = true;
+ break;
+ case NIC_PF_VF_MSG_NACK:
+ pf_nacked = true;
+ break;
+#ifdef VNIC_RSS_SUPPORT
+ case NIC_PF_VF_MSG_RSS_SIZE:
+ nic->rss_info.rss_size = mbx.data.rss_size.ind_tbl_size;
+ break;
+#endif
+ default:
+ netdev_err(nic->netdev,
+ "Invalid message from PF, msg 0x%x\n", mbx.msg);
+ break;
+ }
+ nicvf_clear_intr(nic, NICVF_INTR_MBOX, 0);
+}
+
+static int nicvf_hw_set_mac_addr(struct nicvf *nic, struct net_device *netdev)
+{
+ struct nic_mbx mbx = {};
+ int i;
+
+ mbx.msg = NIC_PF_VF_MSG_SET_MAC;
+ mbx.data.mac.vf_id = nic->vf_id;
+ for (i = 0; i < ETH_ALEN; i++)
+ mbx.data.mac.addr = (mbx.data.mac.addr << 8) |
+ netdev->dev_addr[i];
+
+ return nicvf_send_msg_to_pf(nic, &mbx);
+}
+
+static int nicvf_is_link_active(struct nicvf *nic)
+{
+ return 1;
+}
+
+void nicvf_config_cpi(struct nicvf *nic)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_CPI_CFG;
+ mbx.data.cpi_cfg.vf_id = nic->vf_id;
+ mbx.data.cpi_cfg.cpi_alg = nic->cpi_alg;
+ mbx.data.cpi_cfg.rq_cnt = nic->qs->rq_cnt;
+
+ nicvf_send_msg_to_pf(nic, &mbx);
+}
+
+#ifdef VNIC_RSS_SUPPORT
+void nicvf_get_rss_size(struct nicvf *nic)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_RSS_SIZE;
+ mbx.data.rss_size.vf_id = nic->vf_id;
+ nicvf_send_msg_to_pf(nic, &mbx);
+}
+
+void nicvf_config_rss(struct nicvf *nic)
+{
+ struct nic_mbx mbx = {};
+ struct nicvf_rss_info *rss = &nic->rss_info;
+ int ind_tbl_len = rss->rss_size;
+ bool cont = false;
+ int i;
+
+ mbx.msg = NIC_PF_VF_MSG_RSS_CFG;
+ mbx.data.rss_cfg.vf_id = nic->vf_id;
+ mbx.data.rss_cfg.hash_bits = rss->hash_bits;
+ mbx.data.rss_cfg.tbl_len = 0;
+ mbx.data.rss_cfg.tbl_offset = 0;
+ while (ind_tbl_len) {
+ mbx.data.rss_cfg.tbl_offset += mbx.data.rss_cfg.tbl_len;
+ if (ind_tbl_len > RSS_IND_TBL_LEN_PER_MBX_MSG)
+ mbx.data.rss_cfg.tbl_len = RSS_IND_TBL_LEN_PER_MBX_MSG;
+ else
+ mbx.data.rss_cfg.tbl_len = ind_tbl_len;
+
+ for (i = mbx.data.rss_cfg.tbl_offset;
+ i < (mbx.data.rss_cfg.tbl_offset +
+ mbx.data.rss_cfg.tbl_len); i++)
+ mbx.data.rss_cfg.ind_tbl[i] = rss->ind_tbl[i];
+
+ if (cont)
+ mbx.msg = NIC_PF_VF_MSG_RSS_CFG_CONT;
+
+ nicvf_send_msg_to_pf(nic, &mbx);
+
+ ind_tbl_len -= mbx.data.rss_cfg.tbl_len;
+ if (!ind_tbl_len)
+ return;
+ cont = true;
+ }
+}
+
+static void nicvf_set_rss_key(struct nicvf *nic)
+{
+ struct nicvf_rss_info *rss = &nic->rss_info;
+ int idx;
+
+ for (idx = 0; idx < RSS_HASH_KEY_SIZE; idx++)
+ nicvf_reg_write(nic, NIC_VNIC_RSS_KEY_0_4, rss->key[idx]);
+}
+
+static int nicvf_rss_init(struct nicvf *nic)
+{
+ struct nicvf_rss_info *rss = &nic->rss_info;
+ int idx;
+
+ nicvf_get_rss_size(nic);
+
+ if ((nic->qs->rq_cnt <= 1) || (cpi_alg != CPI_ALG_NONE)) {
+ rss->enable = false;
+ rss->hash_bits = 0;
+ return 0;
+ }
+
+ rss->enable = true;
+
+ /* Using the HW reset value for now */
+ rss->key[0] = 0xFEED0BADFEED0BAD;
+ rss->key[1] = 0xFEED0BADFEED0BAD;
+ rss->key[2] = 0xFEED0BADFEED0BAD;
+ rss->key[3] = 0xFEED0BADFEED0BAD;
+ rss->key[4] = 0xFEED0BADFEED0BAD;
+
+ nicvf_set_rss_key(nic);
+
+ rss->cfg = rss_config;
+ nicvf_reg_write(nic, NIC_VNIC_RSS_CFG, rss->cfg);
+
+ rss->hash_bits = ilog2(rounddown_pow_of_two(rss->rss_size));
+
+ for (idx = 0; idx < rss->rss_size; idx++)
+ rss->ind_tbl[idx] = ethtool_rxfh_indir_default(idx,
+ nic->qs->rq_cnt);
+ nicvf_config_rss(nic);
+ return 1;
+}
+#endif
+
+int nicvf_set_real_num_queues(struct net_device *netdev,
+ int tx_queues, int rx_queues)
+{
+ int err = 0;
+
+ err = netif_set_real_num_tx_queues(netdev, tx_queues);
+ if (err) {
+ netdev_err(netdev,
+ "Failed to set no of Tx queues: %d\n", tx_queues);
+ return err;
+ }
+
+ err = netif_set_real_num_rx_queues(netdev, rx_queues);
+ if (err)
+ netdev_err(netdev,
+ "Failed to set no of Rx queues: %d\n", rx_queues);
+ return err;
+}
+
+static int nicvf_init_resources(struct nicvf *nic)
+{
+ int err;
+
+ nic->num_qs = 1;
+
+ /* Initialize queues and HW for data transfer */
+ err = nicvf_config_data_transfer(nic, true);
+ if (err) {
+ netdev_err(nic->netdev,
+ "Failed to alloc/config VF's QSet resources\n");
+ return err;
+ }
+ /* Enable Qset */
+ nicvf_qset_config(nic, true);
+
+ return 0;
+}
+
+void nicvf_free_skb(struct nicvf *nic, struct sk_buff *skb)
+{
+ int i;
+
+ if (!skb_shinfo(skb)->nr_frags)
+ goto free_skb;
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ const struct skb_frag_struct *frag;
+
+ frag = &skb_shinfo(skb)->frags[i];
+ pci_unmap_single(nic->pdev, (dma_addr_t)skb_frag_address(frag),
+ skb_frag_size(frag), PCI_DMA_TODEVICE);
+ }
+free_skb:
+ pci_unmap_single(nic->pdev, (dma_addr_t)skb->data,
+ skb_headlen(skb), PCI_DMA_TODEVICE);
+ dev_kfree_skb_any(skb);
+}
+
+static void nicvf_snd_pkt_handler(struct net_device *netdev,
+ struct cmp_queue *cq,
+ void *cq_desc, int cqe_type)
+{
+ struct sk_buff *skb = NULL;
+ struct cqe_send_t *cqe_tx;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct snd_queue *sq;
+ struct sq_hdr_subdesc *hdr;
+
+ cqe_tx = (struct cqe_send_t *)cq_desc;
+ sq = &nic->qs->sq[cqe_tx->sq_idx];
+
+ hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, cqe_tx->sqe_ptr);
+ if (hdr->subdesc_type != SQ_DESC_TYPE_HEADER)
+ return;
+
+ nic_dbg(&nic->pdev->dev,
+ "%s Qset #%d SQ #%d SQ ptr #%d subdesc count %d\n",
+ __func__, cqe_tx->sq_qs, cqe_tx->sq_idx,
+ cqe_tx->sqe_ptr, hdr->subdesc_cnt);
+
+ skb = (struct sk_buff *)sq->skbuff[cqe_tx->sqe_ptr];
+ nicvf_free_skb(nic, skb);
+ nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1);
+ nicvf_check_cqe_tx_errs(nic, cq, cq_desc);
+}
+
+static void nicvf_rcv_pkt_handler(struct net_device *netdev,
+ struct napi_struct *napi,
+ struct cmp_queue *cq,
+ void *cq_desc, int cqe_type)
+{
+ struct sk_buff *skb;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct cqe_rx_t *cqe_rx = (struct cqe_rx_t *)cq_desc;
+ int err = 0;
+
+ /* Check for errors */
+ err = nicvf_check_cqe_rx_errs(nic, cq, cq_desc);
+ if (err && !cqe_rx->rb_cnt)
+ return;
+
+ skb = nicvf_get_rcv_skb(nic, cq_desc);
+ if (!skb) {
+ nic_dbg(&nic->pdev->dev, "Packet not received\n");
+ return;
+ }
+
+ nicvf_dump_packet(skb);
+
+#ifdef NICVF_ETHTOOL_ENABLE
+ nicvf_set_rx_frame_cnt(nic, skb);
+#endif
+
+ skb->protocol = eth_type_trans(skb, netdev);
+
+#ifdef VNIC_RX_CHKSUM_SUPPORTED
+ skb->ip_summed = CHECKSUM_UNNECESSARY;
+#else
+ skb_checksum_none_assert(skb);
+#endif
+
+ if (napi && (netdev->features & NETIF_F_GRO))
+ napi_gro_receive(napi, skb);
+ else
+ netif_receive_skb(skb);
+}
+
+static int nicvf_cq_intr_handler(struct net_device *netdev, uint8_t cq_idx,
+ struct napi_struct *napi, int budget)
+{
+ int processed_cqe = 0, work_done = 0;
+ int cqe_count, cqe_head;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct queue_set *qs = nic->qs;
+ struct cmp_queue *cq = &qs->cq[cq_idx];
+ struct cqe_rx_t *cq_desc;
+
+ spin_lock(&cq->cq_lock);
+ /* Get no of valid CQ entries to process */
+ cqe_count = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS, cq_idx);
+ cqe_count &= CQ_CQE_COUNT;
+ if (!cqe_count)
+ goto done;
+
+ /* Get head of the valid CQ entries */
+ cqe_head = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_HEAD, cq_idx) >> 9;
+ cqe_head &= 0xFFFF;
+
+ nic_dbg(&nic->pdev->dev, "%s cqe_count %d cqe_head %d\n",
+ __func__, cqe_count, cqe_head);
+ while (processed_cqe < cqe_count) {
+ /* Get the CQ descriptor */
+ cq_desc = (struct cqe_rx_t *)GET_CQ_DESC(cq, cqe_head);
+
+ if (napi && (work_done >= budget) &&
+ (cq_desc->cqe_type != CQE_TYPE_SEND)) {
+ break;
+ }
+
+ nic_dbg(&nic->pdev->dev, "cq_desc->cqe_type %d\n",
+ cq_desc->cqe_type);
+ switch (cq_desc->cqe_type) {
+ case CQE_TYPE_RX:
+ nicvf_rcv_pkt_handler(netdev, napi, cq,
+ cq_desc, CQE_TYPE_RX);
+ work_done++;
+ break;
+ case CQE_TYPE_SEND:
+ nicvf_snd_pkt_handler(netdev, cq,
+ cq_desc, CQE_TYPE_SEND);
+ break;
+ case CQE_TYPE_INVALID:
+ case CQE_TYPE_RX_SPLIT:
+ case CQE_TYPE_RX_TCP:
+ case CQE_TYPE_SEND_PTP:
+ /* Ignore for now */
+ break;
+ }
+ cq_desc->cqe_type = CQE_TYPE_INVALID;
+ processed_cqe++;
+ cqe_head++;
+ cqe_head &= (cq->dmem.q_len - 1);
+ memset(cq_desc, 0, sizeof(struct cqe_rx_t));
+ }
+ nic_dbg(&nic->pdev->dev, "%s processed_cqe %d work_done %d budget %d\n",
+ __func__, processed_cqe, work_done, budget);
+
+ /* Ring doorbell to inform H/W to reuse processed CQEs */
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_DOOR,
+ cq_idx, processed_cqe);
+done:
+ spin_unlock(&cq->cq_lock);
+ return work_done;
+}
+
+static int nicvf_poll(struct napi_struct *napi, int budget)
+{
+ int work_done = 0;
+ struct net_device *netdev = napi->dev;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct nicvf_cq_poll *cq;
+ struct netdev_queue *txq;
+
+ cq = container_of(napi, struct nicvf_cq_poll, napi);
+ work_done = nicvf_cq_intr_handler(netdev, cq->cq_idx, napi, budget);
+
+ txq = netdev_get_tx_queue(netdev, cq->cq_idx);
+ if (netif_tx_queue_stopped(txq))
+ netif_tx_wake_queue(txq);
+
+ if (work_done < budget) {
+ /* Slow packet rate, exit polling */
+ napi_complete(napi);
+ /* Re-enable interrupts */
+ nicvf_enable_intr(nic, NICVF_INTR_CQ, cq->cq_idx);
+ }
+ return work_done;
+}
+
+/* Qset error interrupt handler
+ *
+ * As of now only CQ errors are handled
+ */
+void nicvf_handle_qs_err(unsigned long data)
+{
+ struct nicvf *nic = (struct nicvf *)data;
+ struct queue_set *qs = nic->qs;
+ int qidx;
+ uint64_t status;
+
+ netif_tx_disable(nic->netdev);
+
+ /* Check if it is CQ err */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++) {
+ status = nicvf_queue_reg_read(nic, NIC_QSET_CQ_0_7_STATUS,
+ qidx);
+ if (!(status & CQ_ERR_MASK))
+ continue;
+ /* Process already queued CQEs and reconfig CQ */
+ nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx);
+ nicvf_sq_disable(nic, qidx);
+ nicvf_cq_intr_handler(nic->netdev, qidx, NULL, 0);
+ nicvf_cmp_queue_config(nic, qs, qidx, true);
+ nicvf_sq_free_used_descs(nic->netdev, &qs->sq[qidx], qidx);
+ nicvf_sq_enable(nic, &qs->sq[qidx], qidx);
+
+ nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx);
+ }
+
+ netif_tx_start_all_queues(nic->netdev);
+ /* Re-enable Qset error interrupt */
+ nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0);
+}
+
+static irqreturn_t nicvf_misc_intr_handler(int irq, void *nicvf_irq)
+{
+ struct nicvf *nic = (struct nicvf *)nicvf_irq;
+ uint64_t intr;
+
+ intr = nicvf_reg_read(nic, NIC_VF_INT);
+ /* Check for spurious interrupt */
+ if (!(intr & NICVF_INTR_MBOX_MASK))
+ return IRQ_HANDLED;
+
+ nicvf_handle_mbx_intr(nic);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t nicvf_intr_handler(int irq, void *nicvf_irq)
+{
+ uint64_t qidx, intr;
+ uint64_t cq_intr, rbdr_intr, qs_err_intr;
+ struct nicvf *nic = (struct nicvf *)nicvf_irq;
+ struct queue_set *qs = nic->qs;
+ struct nicvf_cq_poll *cq_poll = NULL;
+
+ intr = nicvf_reg_read(nic, NIC_VF_INT);
+ nic_dbg(&nic->pdev->dev, "%s intr status 0x%llx\n", __func__, intr);
+
+ cq_intr = (intr & NICVF_INTR_CQ_MASK) >> NICVF_INTR_CQ_SHIFT;
+ qs_err_intr = intr & NICVF_INTR_QS_ERR_MASK;
+ if (qs_err_intr) {
+ /* Disable Qset err interrupt and schedule softirq */
+ nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0);
+ tasklet_hi_schedule(&nic->qs_err_task);
+ }
+
+ /* Disable interrupts and start polling */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++) {
+ if (!(cq_intr & (1 << qidx)))
+ continue;
+ if (!nicvf_is_intr_enabled(nic, NICVF_INTR_CQ, qidx))
+ continue;
+ nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx);
+ cq_poll = nic->napi[qidx];
+ /* Schedule NAPI */
+ napi_schedule(&cq_poll->napi);
+ }
+
+ /* Handle RBDR interrupts */
+ rbdr_intr = (intr & NICVF_INTR_RBDR_MASK) >> NICVF_INTR_RBDR_SHIFT;
+ if (rbdr_intr) {
+ /* Disable RBDR interrupt and schedule softirq */
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx);
+
+ tasklet_hi_schedule(&nic->rbdr_task);
+ }
+
+ /* Clear interrupts */
+ nicvf_reg_write(nic, NIC_VF_INT, intr);
+ return IRQ_HANDLED;
+}
+
+static int nicvf_enable_msix(struct nicvf *nic)
+{
+ int i, ret, vec;
+ struct queue_set *qs = nic->qs;
+
+ nic->num_vec = NIC_VF_MSIX_VECTORS;
+ vec = qs->cq_cnt + qs->rbdr_cnt + qs->sq_cnt;
+ vec = NIC_VF_MSIX_VECTORS;
+ if (vec > NIC_VF_MSIX_VECTORS)
+ nic->num_vec = vec;
+
+ for (i = 0; i < nic->num_vec; i++)
+ nic->msix_entries[i].entry = i;
+
+ ret = pci_enable_msix(nic->pdev, nic->msix_entries, nic->num_vec);
+ if (ret) {
+ netdev_err(nic->netdev,
+ "Req for #%d msix vectors failed\n", nic->num_vec);
+ return 0;
+ }
+ nic->msix_enabled = 1;
+ return 1;
+}
+
+static void nicvf_disable_msix(struct nicvf *nic)
+{
+ if (nic->msix_enabled) {
+ pci_disable_msix(nic->pdev);
+ nic->msix_enabled = 0;
+ nic->num_vec = 0;
+ }
+}
+
+static int nicvf_register_interrupts(struct nicvf *nic)
+{
+ int irq, free, ret = 0;
+ int vector;
+
+ for_each_cq_irq(irq)
+ sprintf(nic->irq_name[irq], "%s%d CQ%d", "NICVF",
+ nic->vf_id, irq);
+
+ for_each_sq_irq(irq)
+ sprintf(nic->irq_name[irq], "%s%d SQ%d", "NICVF",
+ nic->vf_id, irq - NICVF_INTR_ID_SQ);
+
+ for_each_rbdr_irq(irq)
+ sprintf(nic->irq_name[irq], "%s%d RBDR%d", "NICVF",
+ nic->vf_id, irq - NICVF_INTR_ID_RBDR);
+
+ /* Register all interrupts except mailbox */
+ for (irq = 0; irq < NICVF_INTR_ID_MISC; irq++) {
+ vector = nic->msix_entries[irq].vector;
+ ret = request_irq(vector, nicvf_intr_handler,
+ 0, nic->irq_name[irq], nic);
+ if (ret)
+ break;
+ nic->irq_allocated[irq] = 1;
+ }
+
+ sprintf(nic->irq_name[NICVF_INTR_ID_QS_ERR],
+ "%s%d Qset error", "NICVF", nic->vf_id);
+ if (!ret) {
+ vector = nic->msix_entries[NICVF_INTR_ID_QS_ERR].vector;
+ irq = NICVF_INTR_ID_QS_ERR;
+ ret = request_irq(vector, nicvf_intr_handler,
+ 0, nic->irq_name[irq], nic);
+ if (!ret)
+ nic->irq_allocated[irq] = 1;
+ }
+
+ if (ret) {
+ netdev_err(nic->netdev, "Request irq failed\n");
+ for (free = 0; free < irq; free++)
+ free_irq(nic->msix_entries[free].vector, nic);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void nicvf_unregister_interrupts(struct nicvf *nic)
+{
+ int irq;
+
+ /* Free registered interrupts */
+ for (irq = 0; irq < nic->num_vec; irq++) {
+ if (nic->irq_allocated[irq])
+ free_irq(nic->msix_entries[irq].vector, nic);
+ nic->irq_allocated[irq] = 0;
+ }
+
+ /* Disable MSI-X */
+ nicvf_disable_msix(nic);
+}
+
+static int nicvf_register_misc_interrupt(struct nicvf *nic)
+{
+ int ret = 0;
+ int irq = NICVF_INTR_ID_MISC;
+
+ /* Enable MSI-X */
+ if (!nicvf_enable_msix(nic))
+ return 1;
+
+ sprintf(nic->irq_name[irq], "%s Mbox", "NICVF");
+ /* Register Misc interrupt */
+ ret = request_irq(nic->msix_entries[irq].vector,
+ nicvf_misc_intr_handler, 0, nic->irq_name[irq], nic);
+
+ if (ret)
+ return ret;
+ nic->irq_allocated[irq] = 1;
+
+ /* Enable mailbox interrupt */
+ nicvf_enable_intr(nic, NICVF_INTR_MBOX, 0);
+
+ /* Check if VF is able to communicate with PF */
+ if (!nicvf_check_pf_ready(nic)) {
+ nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0);
+ nicvf_unregister_interrupts(nic);
+ return 1;
+ }
+
+ return 0;
+}
+
+#ifdef VNIC_SW_TSO_SUPPORT
+static int nicvf_sw_tso(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct sk_buff *segs, *nskb;
+ struct nicvf *nic = netdev_priv(netdev);
+
+ if (!skb_shinfo(skb)->gso_size)
+ return 1;
+
+ nic->drv_stats.tx_tso++;
+ /* Segment the large frame */
+ segs = skb_gso_segment(skb, netdev->features & ~NETIF_F_TSO);
+ if (IS_ERR(segs))
+ goto gso_err;
+
+ do {
+ nskb = segs;
+ segs = segs->next;
+ nskb->next = NULL;
+ nicvf_xmit(nskb, netdev);
+ } while (segs);
+
+gso_err:
+ dev_kfree_skb(skb);
+
+ return NETDEV_TX_OK;
+}
+#endif
+
+static netdev_tx_t nicvf_xmit(struct sk_buff *skb, struct net_device *netdev)
+{
+ struct nicvf *nic = netdev_priv(netdev);
+ int qid = skb_get_queue_mapping(skb);
+ struct netdev_queue *txq = netdev_get_tx_queue(netdev, qid);
+ int ret = 1;
+
+ /* Check for minimum packet length */
+ if (skb->len <= ETH_HLEN) {
+ dev_kfree_skb(skb);
+ return NETDEV_TX_OK;
+ }
+
+#ifdef VNIC_SW_TSO_SUPPORT
+ if (netdev->features & NETIF_F_TSO)
+ ret = nicvf_sw_tso(skb, netdev);
+#endif
+ if (ret == NETDEV_TX_OK)
+ return NETDEV_TX_OK;
+
+#ifndef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+ /* Calculate checksum in software */
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ if (unlikely(skb_checksum_help(skb))) {
+ netdev_dbg(netdev, "unable to do checksum\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+ }
+#endif
+#ifdef VNIC_HW_TSO_SUPPORT
+ if (skb_shinfo(skb)->gso_size && (skb->protocol == ETH_P_IP) &&
+ (ip_hdr(skb)->protocol != IPPROTO_TCP)) {
+ netdev_dbg(netdev,
+ "Only TCP segmentation is supported, dropping packet\n");
+ dev_kfree_skb_any(skb);
+ return NETDEV_TX_OK;
+ }
+#endif
+ if (!nicvf_sq_append_skb(nic, skb) && !netif_tx_queue_stopped(txq)) {
+ netif_tx_stop_queue(txq);
+ nic->drv_stats.tx_busy++;
+ netdev_err(netdev, "VF%d: TX ring full, stopping queue%d\n",
+ nic->vf_id, qid);
+ return NETDEV_TX_BUSY;
+ }
+
+ return NETDEV_TX_OK;
+}
+
+int nicvf_stop(struct net_device *netdev)
+{
+ int qidx;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct queue_set *qs = nic->qs;
+
+ netif_carrier_off(netdev);
+ netif_tx_disable(netdev);
+
+ /* Disable HW Qset, to stop receiving packets */
+ nicvf_qset_config(nic, false);
+
+ /* disable mailbox interrupt */
+ nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0);
+
+ /* Disable interrupts */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++)
+ nicvf_disable_intr(nic, NICVF_INTR_CQ, qidx);
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_disable_intr(nic, NICVF_INTR_RBDR, qidx);
+ nicvf_disable_intr(nic, NICVF_INTR_QS_ERR, 0);
+
+ tasklet_kill(&nic->rbdr_task);
+ tasklet_kill(&nic->qs_err_task);
+
+ nicvf_unregister_interrupts(nic);
+ for (qidx = 0; qidx < nic->qs->cq_cnt; qidx++) {
+ napi_synchronize(&nic->napi[qidx]->napi);
+ napi_disable(&nic->napi[qidx]->napi);
+ netif_napi_del(&nic->napi[qidx]->napi);
+ kfree(nic->napi[qidx]);
+ nic->napi[qidx] = NULL;
+ }
+ /* Free resources */
+ nicvf_config_data_transfer(nic, false);
+
+ return 0;
+}
+
+int nicvf_open(struct net_device *netdev)
+{
+ int err, qidx;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct queue_set *qs = nic->qs;
+ struct nicvf_cq_poll *cq_poll = NULL;
+
+ nic->mtu = netdev->mtu;
+
+ netif_carrier_off(netdev);
+
+ err = nicvf_register_misc_interrupt(nic);
+ if (err)
+ return err;
+
+ err = nicvf_init_resources(nic);
+ if (err) {
+ nicvf_disable_intr(nic, NICVF_INTR_MBOX, 0);
+ nicvf_unregister_interrupts(nic);
+ return err;
+ }
+
+ err = nicvf_register_interrupts(nic);
+ if (err) {
+ nicvf_stop(netdev);
+ return err;
+ }
+
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++) {
+ cq_poll = kzalloc(sizeof(*cq_poll), GFP_KERNEL);
+ if (!cq_poll)
+ goto napi_del;
+ cq_poll->cq_idx = qidx;
+ netif_napi_add(netdev, &cq_poll->napi, nicvf_poll,
+ NAPI_POLL_WEIGHT);
+ napi_enable(&cq_poll->napi);
+ nic->napi[qidx] = cq_poll;
+ }
+ goto no_err;
+napi_del:
+ while (qidx) {
+ qidx--;
+ cq_poll = nic->napi[qidx];
+ napi_disable(&cq_poll->napi);
+ netif_napi_del(&cq_poll->napi);
+ kfree(cq_poll);
+ nic->napi[qidx] = NULL;
+ }
+ return -ENOMEM;
+no_err:
+ /* Set MAC-ID */
+ if (is_zero_ether_addr(netdev->dev_addr))
+ eth_hw_addr_random(netdev);
+
+ nicvf_hw_set_mac_addr(nic, netdev);
+
+ /* Init tasklet for handling Qset err interrupt */
+ tasklet_init(&nic->qs_err_task, nicvf_handle_qs_err,
+ (unsigned long)nic);
+
+ /* Enable Qset err interrupt */
+ nicvf_enable_intr(nic, NICVF_INTR_QS_ERR, 0);
+
+ /* Enable completion queue interrupt */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++)
+ nicvf_enable_intr(nic, NICVF_INTR_CQ, qidx);
+
+ /* Init RBDR tasklet and enable RBDR threshold interrupt */
+ tasklet_init(&nic->rbdr_task, nicvf_refill_rbdr,
+ (unsigned long)nic);
+
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_enable_intr(nic, NICVF_INTR_RBDR, qidx);
+
+ /* Configure CPI alorithm */
+ nic->cpi_alg = cpi_alg;
+ nicvf_config_cpi(nic);
+
+#ifdef VNIC_RSS_SUPPORT
+ /* Configure receive side scaling */
+ nicvf_rss_init(nic);
+#endif
+
+ if (nicvf_is_link_active(nic)) {
+ netif_carrier_on(netdev);
+ netif_tx_start_all_queues(netdev);
+ }
+
+ return 0;
+}
+
+static int nicvf_update_hw_max_frs(struct nicvf *nic, int mtu)
+{
+ struct nic_mbx mbx = {};
+
+ mbx.msg = NIC_PF_VF_MSG_SET_MAX_FRS;
+ mbx.data.frs.max_frs = mtu;
+ mbx.data.frs.vf_id = nic->vf_id;
+
+ return nicvf_send_msg_to_pf(nic, &mbx);
+}
+
+static int nicvf_change_mtu(struct net_device *netdev, int new_mtu)
+{
+ struct nicvf *nic = netdev_priv(netdev);
+
+ if (new_mtu > NIC_HW_MAX_FRS)
+ return -EINVAL;
+
+ if (new_mtu < NIC_HW_MIN_FRS)
+ return -EINVAL;
+
+ if (nicvf_update_hw_max_frs(nic, new_mtu))
+ return -EINVAL;
+ netdev->mtu = new_mtu;
+
+ return 0;
+}
+
+static int nicvf_set_mac_address(struct net_device *netdev, void *p)
+{
+ struct sockaddr *addr = p;
+ struct nicvf *nic = netdev_priv(netdev);
+
+ if (!is_valid_ether_addr(addr->sa_data))
+ return -EADDRNOTAVAIL;
+
+ if (nicvf_hw_set_mac_addr(nic, netdev))
+ return -EBUSY;
+
+ memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
+
+ return 0;
+}
+
+void nicvf_update_stats(struct nicvf *nic)
+{
+ int qidx;
+ struct nicvf_hw_stats *stats = &nic->stats;
+ struct nicvf_drv_stats *drv_stats = &nic->drv_stats;
+ struct queue_set *qs = nic->qs;
+
+#define GET_RX_STATS(reg) \
+ nicvf_reg_read(nic, NIC_VNIC_RX_STAT_0_13 | (reg << 3))
+#define GET_TX_STATS(reg) \
+ nicvf_reg_read(nic, NIC_VNIC_TX_STAT_0_4 | (reg << 3))
+
+ stats->rx_bytes_ok = GET_RX_STATS(RX_OCTS);
+ stats->rx_ucast_frames_ok = GET_RX_STATS(RX_UCAST);
+ stats->rx_bcast_frames_ok = GET_RX_STATS(RX_BCAST);
+ stats->rx_mcast_frames_ok = GET_RX_STATS(RX_MCAST);
+ stats->rx_fcs_errors = GET_RX_STATS(RX_FCS);
+ stats->rx_l2_errors = GET_RX_STATS(RX_L2ERR);
+ stats->rx_drop_red = GET_RX_STATS(RX_RED);
+ stats->rx_drop_overrun = GET_RX_STATS(RX_ORUN);
+ stats->rx_drop_bcast = GET_RX_STATS(RX_DRP_BCAST);
+ stats->rx_drop_mcast = GET_RX_STATS(RX_DRP_MCAST);
+ stats->rx_drop_l3_bcast = GET_RX_STATS(RX_DRP_L3BCAST);
+ stats->rx_drop_l3_mcast = GET_RX_STATS(RX_DRP_L3MCAST);
+
+ stats->tx_bytes_ok = GET_TX_STATS(TX_OCTS);
+ stats->tx_ucast_frames_ok = GET_TX_STATS(TX_UCAST);
+ stats->tx_bcast_frames_ok = GET_TX_STATS(TX_BCAST);
+ stats->tx_mcast_frames_ok = GET_TX_STATS(TX_MCAST);
+ stats->tx_drops = GET_RX_STATS(TX_DROP);
+
+ drv_stats->rx_frames_ok = stats->rx_ucast_frames_ok +
+ stats->rx_bcast_frames_ok +
+ stats->rx_mcast_frames_ok;
+ drv_stats->tx_frames_ok = stats->tx_ucast_frames_ok +
+ stats->tx_bcast_frames_ok +
+ stats->tx_mcast_frames_ok;
+ drv_stats->rx_drops = stats->rx_drop_red +
+ stats->rx_drop_overrun;
+ drv_stats->rx_drops = stats->tx_drops;
+
+ /* Update RQ and SQ stats */
+ for (qidx = 0; qidx < qs->rq_cnt; qidx++)
+ nicvf_update_rq_stats(nic, qidx);
+ for (qidx = 0; qidx < qs->sq_cnt; qidx++)
+ nicvf_update_sq_stats(nic, qidx);
+}
+
+struct rtnl_link_stats64 *nicvf_get_stats64(struct net_device *netdev,
+ struct rtnl_link_stats64 *stats)
+{
+ struct nicvf *nic = netdev_priv(netdev);
+ struct nicvf_hw_stats *hw_stats = &nic->stats;
+ struct nicvf_drv_stats *drv_stats = &nic->drv_stats;
+
+ nicvf_update_stats(nic);
+
+ stats->rx_bytes = hw_stats->rx_bytes_ok;
+ stats->rx_packets = drv_stats->rx_frames_ok;
+ stats->rx_dropped = drv_stats->rx_drops;
+
+ stats->tx_bytes = hw_stats->tx_bytes_ok;
+ stats->tx_packets = drv_stats->tx_frames_ok;
+ stats->tx_dropped = drv_stats->tx_drops;
+
+ return stats;
+}
+
+static void nicvf_tx_timeout(struct net_device *dev)
+{
+ struct nicvf *nic = netdev_priv(dev);
+
+ netdev_info(dev, "tx timeout\n");
+
+ schedule_work(&nic->reset_task);
+}
+
+static void nicvf_reset_task(struct work_struct *work)
+{
+ struct nicvf *nic;
+
+ nic = container_of(work, struct nicvf, reset_task);
+
+ if (!netif_running(nic->netdev))
+ return;
+
+ nicvf_stop(nic->netdev);
+ nicvf_open(nic->netdev);
+}
+
+static const struct net_device_ops nicvf_netdev_ops = {
+ .ndo_open = nicvf_open,
+ .ndo_stop = nicvf_stop,
+ .ndo_start_xmit = nicvf_xmit,
+ .ndo_change_mtu = nicvf_change_mtu,
+ .ndo_set_mac_address = nicvf_set_mac_address,
+ .ndo_get_stats64 = nicvf_get_stats64,
+ .ndo_tx_timeout = nicvf_tx_timeout,
+};
+
+static int nicvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct net_device *netdev;
+ struct nicvf *nic;
+ struct queue_set *qs;
+ int err;
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ goto exit;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto err_disable_device;
+ }
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "Unable to get usable DMA configuration\n");
+ goto err_release_regions;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(48));
+ if (err) {
+ dev_err(dev, "unable to get 48-bit DMA for consistent allocations\n");
+ goto err_release_regions;
+ }
+
+ netdev = alloc_etherdev_mqs(sizeof(struct nicvf),
+ MAX_RCV_QUEUES_PER_QS,
+ MAX_SND_QUEUES_PER_QS);
+ if (!netdev) {
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+
+ pci_set_drvdata(pdev, netdev);
+
+ SET_NETDEV_DEV(netdev, &pdev->dev);
+
+ nic = netdev_priv(netdev);
+ nic->netdev = netdev;
+ nic->pdev = pdev;
+
+ /* MAP VF's configuration registers */
+ nic->reg_base = (uint64_t)pci_ioremap_bar(pdev, PCI_CFG_REG_BAR_NUM);
+ if (!nic->reg_base) {
+ dev_err(dev, "Cannot map config register space, aborting\n");
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+
+ err = nicvf_set_qset_resources(nic);
+ if (err)
+ goto err_unmap_resources;
+
+ qs = nic->qs;
+
+ err = nicvf_set_real_num_queues(netdev, qs->sq_cnt, qs->rq_cnt);
+ if (err)
+ goto err_unmap_resources;
+
+#ifdef VNIC_RX_CSUM_OFFLOAD_SUPPORT
+ netdev->hw_features |= NETIF_F_RXCSUM;
+#endif
+#ifdef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+ netdev->hw_features |= NETIF_F_IP_CSUM;
+#endif
+#ifdef VNIC_SG_SUPPORT
+ netdev->hw_features |= NETIF_F_SG;
+#endif
+#ifdef VNIC_TSO_SUPPORT
+ netdev->hw_features |= NETIF_F_TSO | NETIF_F_SG | NETIF_F_IP_CSUM;
+#endif
+ netdev->features |= netdev->hw_features;
+ netdev->netdev_ops = &nicvf_netdev_ops;
+
+ INIT_WORK(&nic->reset_task, nicvf_reset_task);
+
+ err = register_netdev(netdev);
+ if (err) {
+ dev_err(dev, "Failed to register netdevice\n");
+ goto err_unmap_resources;
+ }
+
+#ifdef NICVF_ETHTOOL_ENABLE
+ nicvf_set_ethtool_ops(netdev);
+#endif
+ goto exit;
+
+err_unmap_resources:
+ if (nic->reg_base)
+ iounmap((void *)nic->reg_base);
+err_release_regions:
+ pci_release_regions(pdev);
+err_disable_device:
+ pci_disable_device(pdev);
+exit:
+ return err;
+}
+
+static void nicvf_remove(struct pci_dev *pdev)
+{
+ struct net_device *netdev = pci_get_drvdata(pdev);
+ struct nicvf *nic;
+
+ if (!netdev)
+ return;
+
+ nic = netdev_priv(netdev);
+ unregister_netdev(netdev);
+
+ pci_set_drvdata(pdev, NULL);
+
+ if (nic->reg_base)
+ iounmap((void *)nic->reg_base);
+
+ /* Free Qset */
+ kfree(nic->qs);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ free_netdev(netdev);
+}
+
+static struct pci_driver nicvf_driver = {
+ .name = DRV_NAME,
+ .id_table = nicvf_id_table,
+ .probe = nicvf_probe,
+ .remove = nicvf_remove,
+};
+
+static int __init nicvf_init_module(void)
+{
+ pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
+
+ return pci_register_driver(&nicvf_driver);
+}
+
+static void __exit nicvf_cleanup_module(void)
+{
+ pci_unregister_driver(&nicvf_driver);
+}
+
+module_init(nicvf_init_module);
+module_exit(nicvf_cleanup_module);
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.c b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
new file mode 100644
index 000000000000..ffbfe7425c61
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.c
@@ -0,0 +1,1302 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+
+#include "nic_reg.h"
+#include "nic.h"
+#include "q_struct.h"
+#include "nicvf_queues.h"
+
+#define MIN_SND_QUEUE_DESC_FOR_PKT_XMIT 2
+
+static int nicvf_alloc_q_desc_mem(struct nicvf *nic, struct q_desc_mem *dmem,
+ int q_len, int desc_size, int align_bytes)
+{
+ dmem->q_len = q_len;
+ dmem->size = (desc_size * q_len) + align_bytes;
+ dmem->unalign_base = dma_alloc_coherent(&nic->pdev->dev, dmem->size,
+ &dmem->dma, GFP_KERNEL);
+ if (!dmem->unalign_base)
+ return -1;
+
+ dmem->phys_base = NICVF_ALIGNED_ADDR((uint64_t)dmem->dma, align_bytes);
+ dmem->base = (void *)((u8 *)dmem->unalign_base +
+ (dmem->phys_base - dmem->dma));
+ return 0;
+}
+
+static void nicvf_free_q_desc_mem(struct nicvf *nic, struct q_desc_mem *dmem)
+{
+ if (!dmem)
+ return;
+
+ dma_free_coherent(&nic->pdev->dev, dmem->size,
+ dmem->unalign_base, dmem->dma);
+ dmem->unalign_base = NULL;
+ dmem->base = NULL;
+}
+
+static int nicvf_alloc_rcv_buffer(struct nicvf *nic,
+ uint64_t buf_len, unsigned char **rbuf)
+{
+ struct sk_buff *skb = NULL;
+
+ buf_len += NICVF_RCV_BUF_ALIGN_BYTES + sizeof(void *);
+
+ skb = netdev_alloc_skb(nic->netdev, buf_len);
+ if (!skb) {
+ netdev_err(nic->netdev, "Failed to allocate new rcv buffer\n");
+ return -ENOMEM;
+ }
+
+ /* Reserve bytes for storing skb address */
+ skb_reserve(skb, sizeof(void *));
+ /* Align buffer addr to cache line i.e 128 bytes */
+ skb_reserve(skb, NICVF_RCV_BUF_ALIGN_LEN((uint64_t)skb->data));
+
+ /* Store skb address */
+ *(struct sk_buff **)(skb->data - sizeof(void *)) = skb;
+
+ /* Return buffer address */
+ *rbuf = skb->data;
+ return 0;
+}
+
+static struct sk_buff *nicvf_rb_ptr_to_skb(struct nicvf *nic, uint64_t rb_ptr)
+{
+ struct sk_buff *skb;
+
+ rb_ptr = (uint64_t)phys_to_virt(dma_to_phys(&nic->pdev->dev, rb_ptr));
+ skb = (struct sk_buff *)*(uint64_t *)(rb_ptr - sizeof(void *));
+ return skb;
+}
+
+static int nicvf_init_rbdr(struct nicvf *nic, struct rbdr *rbdr,
+ int ring_len, int buf_size)
+{
+ int idx;
+ unsigned char *rbuf;
+ struct rbdr_entry_t *desc;
+
+ if (nicvf_alloc_q_desc_mem(nic, &rbdr->dmem, ring_len,
+ sizeof(struct rbdr_entry_t),
+ NICVF_RCV_BUF_ALIGN_BYTES)) {
+ netdev_err(nic->netdev,
+ "Unable to allocate memory for rcv buffer ring\n");
+ return -ENOMEM;
+ }
+
+ rbdr->desc = rbdr->dmem.base;
+ /* Buffer size has to be in multiples of 128 bytes */
+ rbdr->buf_size = buf_size;
+ rbdr->enable = true;
+ rbdr->thresh = RBDR_THRESH;
+
+ for (idx = 0; idx < ring_len; idx++) {
+ if (nicvf_alloc_rcv_buffer(nic, rbdr->buf_size, &rbuf))
+ return -ENOMEM;
+
+ desc = GET_RBDR_DESC(rbdr, idx);
+ desc->buf_addr = pci_map_single(nic->pdev, rbuf,
+ rbdr->buf_size,
+ PCI_DMA_FROMDEVICE) >>
+ NICVF_RCV_BUF_ALIGN;
+ }
+ return 0;
+}
+
+static void nicvf_free_rbdr(struct nicvf *nic, struct rbdr *rbdr, int rbdr_qidx)
+{
+ int head, tail;
+ struct sk_buff *skb;
+ uint64_t buf_addr;
+ struct rbdr_entry_t *desc;
+
+ if (!rbdr)
+ return;
+
+ rbdr->enable = false;
+ if (!rbdr->dmem.base)
+ return;
+
+ head = nicvf_queue_reg_read(nic,
+ NIC_QSET_RBDR_0_1_HEAD, rbdr_qidx) >> 3;
+ tail = nicvf_queue_reg_read(nic,
+ NIC_QSET_RBDR_0_1_TAIL, rbdr_qidx) >> 3;
+ /* Free SKBs */
+ while (head != tail) {
+ desc = GET_RBDR_DESC(rbdr, head);
+ buf_addr = desc->buf_addr << NICVF_RCV_BUF_ALIGN;
+ skb = nicvf_rb_ptr_to_skb(nic, buf_addr);
+ pci_unmap_single(nic->pdev, (dma_addr_t)buf_addr,
+ rbdr->buf_size, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(skb);
+ head++;
+ head &= (rbdr->dmem.q_len - 1);
+ }
+ /* Free SKB of tail desc */
+ desc = GET_RBDR_DESC(rbdr, tail);
+ buf_addr = desc->buf_addr << NICVF_RCV_BUF_ALIGN;
+ skb = nicvf_rb_ptr_to_skb(nic, buf_addr);
+ pci_unmap_single(nic->pdev, (dma_addr_t)buf_addr,
+ rbdr->buf_size, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb(skb);
+
+ /* Free RBDR ring */
+ nicvf_free_q_desc_mem(nic, &rbdr->dmem);
+}
+
+/* Refill receive buffer descriptors with new buffers.
+ * This runs in softirq context .
+ */
+void nicvf_refill_rbdr(unsigned long data)
+{
+ struct nicvf *nic = (struct nicvf *)data;
+ struct queue_set *qs = nic->qs;
+ int rbdr_idx = qs->rbdr_cnt;
+ int tail, qcount;
+ int refill_rb_cnt;
+ struct rbdr *rbdr;
+ unsigned char *rbuf;
+ struct rbdr_entry_t *desc;
+
+refill:
+ if (!rbdr_idx)
+ return;
+ rbdr_idx--;
+ rbdr = &qs->rbdr[rbdr_idx];
+ /* Check if it's enabled */
+ if (!rbdr->enable)
+ goto next_rbdr;
+
+ /* check if valid descs reached or crossed threshold level */
+ qcount = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_STATUS0, rbdr_idx);
+ qcount &= 0x7FFFF;
+ if (qcount > rbdr->thresh)
+ goto next_rbdr;
+
+ /* Get no of desc's to be refilled */
+ refill_rb_cnt = rbdr->thresh;
+
+ /* Start filling descs from tail */
+ tail = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_TAIL, rbdr_idx) >> 3;
+ while (refill_rb_cnt) {
+ tail++;
+ tail &= (rbdr->dmem.q_len - 1);
+
+ if (nicvf_alloc_rcv_buffer(nic, rbdr->buf_size, &rbuf))
+ break;
+
+ desc = GET_RBDR_DESC(rbdr, tail);
+ desc->buf_addr = pci_map_single(nic->pdev, rbuf, rbdr->buf_size,
+ PCI_DMA_FROMDEVICE) >>
+ NICVF_RCV_BUF_ALIGN;
+ refill_rb_cnt--;
+ }
+ /* Notify HW */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_DOOR,
+ rbdr_idx, rbdr->thresh);
+next_rbdr:
+ if (rbdr_idx)
+ goto refill;
+
+ /* Re-enable RBDR interrupts */
+ for (rbdr_idx = 0; rbdr_idx < qs->rbdr_cnt; rbdr_idx++)
+ nicvf_enable_intr(nic, NICVF_INTR_RBDR, rbdr_idx);
+}
+
+/* TBD: how to handle full packets received in CQ
+ * i.e conversion of buffers into SKBs
+ */
+static int nicvf_init_cmp_queue(struct nicvf *nic,
+ struct cmp_queue *cq, int q_len)
+{
+ int time;
+
+ if (nicvf_alloc_q_desc_mem(nic, &cq->dmem, q_len,
+ CMP_QUEUE_DESC_SIZE,
+ NICVF_CQ_BASE_ALIGN_BYTES)) {
+ netdev_err(nic->netdev,
+ "Unable to allocate memory for completion queue\n");
+ return -ENOMEM;
+ }
+ cq->desc = cq->dmem.base;
+ cq->thresh = CMP_QUEUE_CQE_THRESH;
+
+ time = NIC_NS_PER_100_SYETEM_CLK / 100;
+ time = CMP_QUEUE_TIMER_THRESH / (NICPF_CLK_PER_INT_TICK * time);
+ cq->intr_timer_thresh = time;
+
+ return 0;
+}
+
+static void nicvf_free_cmp_queue(struct nicvf *nic, struct cmp_queue *cq)
+{
+ if (!cq)
+ return;
+ if (!cq->dmem.base)
+ return;
+
+ nicvf_free_q_desc_mem(nic, &cq->dmem);
+}
+
+static int nicvf_init_snd_queue(struct nicvf *nic,
+ struct snd_queue *sq, int q_len)
+{
+ if (nicvf_alloc_q_desc_mem(nic, &sq->dmem, q_len,
+ SND_QUEUE_DESC_SIZE,
+ NICVF_SQ_BASE_ALIGN_BYTES)) {
+ netdev_err(nic->netdev,
+ "Unable to allocate memory for send queue\n");
+ return -ENOMEM;
+ }
+
+ sq->desc = sq->dmem.base;
+ sq->skbuff = kcalloc(q_len, sizeof(uint64_t), GFP_ATOMIC);
+ sq->head = 0;
+ sq->tail = 0;
+ sq->free_cnt = q_len;
+ sq->thresh = SND_QUEUE_THRESH;
+
+ return 0;
+}
+
+static void nicvf_free_snd_queue(struct nicvf *nic, struct snd_queue *sq)
+{
+ if (!sq)
+ return;
+ if (!sq->dmem.base)
+ return;
+
+ kfree(sq->skbuff);
+ nicvf_free_q_desc_mem(nic, &sq->dmem);
+}
+
+static void nicvf_rcv_queue_config(struct nicvf *nic, struct queue_set *qs,
+ int qidx, bool enable)
+{
+ struct nic_mbx mbx = {};
+ struct rcv_queue *rq;
+ struct rq_cfg rq_cfg;
+
+ rq = &qs->rq[qidx];
+ rq->enable = enable;
+
+ if (!rq->enable) {
+ /* Disable receive queue */
+ nicvf_queue_reg_write(nic, NIC_QSET_RQ_0_7_CFG, qidx, 0);
+ return;
+ }
+
+ rq->cq_qs = qs->vnic_id;
+ rq->cq_idx = qidx;
+ rq->start_rbdr_qs = qs->vnic_id;
+ rq->start_qs_rbdr_idx = qs->rbdr_cnt - 1;
+ rq->cont_rbdr_qs = qs->vnic_id;
+ rq->cont_qs_rbdr_idx = qs->rbdr_cnt - 1;
+ rq->caching = 1;
+
+ /* Send a mailbox msg to PF to config RQ */
+ mbx.msg = NIC_PF_VF_MSG_RQ_CFG;
+ mbx.data.rq.qs_num = qs->vnic_id;
+ mbx.data.rq.rq_num = qidx;
+ mbx.data.rq.cfg = (rq->caching << 26) | (rq->cq_qs << 19) |
+ (rq->cq_idx << 16) | (rq->cont_rbdr_qs << 9) |
+ (rq->cont_qs_rbdr_idx << 8) |
+ (rq->start_rbdr_qs << 1) | (rq->start_qs_rbdr_idx);
+ nicvf_send_msg_to_pf(nic, &mbx);
+
+ /* RQ drop config
+ * Enable CQ drop to reserve sufficient CQEs for all tx packets
+ */
+ mbx.msg = NIC_PF_VF_MSG_RQ_DROP_CFG;
+ mbx.data.rq.cfg = (1ULL << 62) | (RQ_CQ_DROP << 8);
+ nicvf_send_msg_to_pf(nic, &mbx);
+
+ nicvf_queue_reg_write(nic, NIC_QSET_RQ_GEN_CFG, qidx, 0x00);
+
+ /* Enable Receive queue */
+ rq_cfg.ena = 1;
+ rq_cfg.tcp_ena = 0;
+ nicvf_queue_reg_write(nic, NIC_QSET_RQ_0_7_CFG, qidx, *(u64 *)&rq_cfg);
+}
+
+void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs,
+ int qidx, bool enable)
+{
+ struct cmp_queue *cq;
+ struct cq_cfg cq_cfg;
+
+ cq = &qs->cq[qidx];
+ cq->enable = enable;
+ if (!cq->enable) {
+ /* Disable completion queue */
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_CFG, qidx, 0);
+ return;
+ }
+
+ /* Reset completion queue */
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_CFG, qidx, NICVF_CQ_RESET);
+
+ /* Set completion queue base address */
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_BASE,
+ qidx, (uint64_t)(cq->dmem.phys_base));
+
+ /* Enable Completion queue */
+ cq_cfg.ena = 1;
+ cq_cfg.reset = 0;
+ cq_cfg.caching = 1;
+ cq_cfg.qsize = (qs->cq_len >> 10) - 1;
+ cq_cfg.avg_con = 0;
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_CFG, qidx, *(u64 *)&cq_cfg);
+
+ /* Set threshold value for interrupt generation */
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_THRESH, qidx, cq->thresh);
+ nicvf_queue_reg_write(nic, NIC_QSET_CQ_0_7_CFG2,
+ qidx, cq->intr_timer_thresh);
+}
+
+static void nicvf_snd_queue_config(struct nicvf *nic, struct queue_set *qs,
+ int qidx, bool enable)
+{
+ struct nic_mbx mbx = {};
+ struct snd_queue *sq;
+ struct sq_cfg sq_cfg;
+
+ sq = &qs->sq[qidx];
+ sq->enable = enable;
+ if (!sq->enable) {
+ /* Disable send queue */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, 0);
+ return;
+ }
+
+ /* Reset send queue */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, NICVF_SQ_RESET);
+
+ sq->cq_qs = qs->vnic_id;
+ sq->cq_idx = qidx;
+
+ /* Send a mailbox msg to PF to config SQ */
+ mbx.msg = NIC_PF_VF_MSG_SQ_CFG;
+ mbx.data.sq.qs_num = qs->vnic_id;
+ mbx.data.sq.sq_num = qidx;
+ mbx.data.sq.cfg = (sq->cq_qs << 3) | sq->cq_idx;
+ nicvf_send_msg_to_pf(nic, &mbx);
+
+ /* Set queue base address */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_BASE,
+ qidx, (uint64_t)(sq->dmem.phys_base));
+
+ /* Enable send queue & set queue size */
+ sq_cfg.ena = 1;
+ sq_cfg.reset = 0;
+ sq_cfg.ldwb = 0;
+ sq_cfg.qsize = (qs->sq_len >> 10) - 1;
+ sq_cfg.tstmp_bgx_intf = 0;
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, *(u64 *)&sq_cfg);
+
+ /* Set threshold value for interrupt generation */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_THRESH, qidx, sq->thresh);
+}
+
+static void nicvf_rbdr_config(struct nicvf *nic, struct queue_set *qs,
+ int qidx, bool enable)
+{
+ int reset, timeout = 10;
+ struct rbdr *rbdr;
+ struct rbdr_cfg rbdr_cfg;
+
+ rbdr = &qs->rbdr[qidx];
+ if (!enable) {
+ /* Disable RBDR */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_CFG, qidx, 0);
+ return;
+ }
+
+ /* Reset RBDR */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_CFG,
+ qidx, NICVF_RBDR_RESET);
+ /* Wait for reset to finish */
+ while (1) {
+ usleep_range(2000, 3000);
+ reset = nicvf_queue_reg_read(nic, NIC_QSET_RBDR_0_1_CFG, qidx);
+ if (!(reset & NICVF_RBDR_RESET))
+ break;
+ timeout--;
+ if (!timeout) {
+ netdev_err(nic->netdev,
+ "RBDR%d didn't come out of reset\n", qidx);
+ return;
+ }
+ }
+
+ /* Set descriptor base address */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_BASE,
+ qidx, (uint64_t)(rbdr->dmem.phys_base));
+
+ /* Enable RBDR & set queue size */
+ /* Buffer size should be in multiples of 128 bytes */
+ rbdr_cfg.ena = 1;
+ rbdr_cfg.reset = 0;
+ rbdr_cfg.ldwb = 0;
+ rbdr_cfg.qsize = (qs->rbdr_len >> 13) - 1;
+ rbdr_cfg.avg_con = 0;
+ rbdr_cfg.lines = rbdr->buf_size / 128;
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_CFG,
+ qidx, *(u64 *)&rbdr_cfg);
+
+ /* Notify HW */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_DOOR,
+ qidx, qs->rbdr_len - 1);
+
+ /* Set threshold value for interrupt generation */
+ nicvf_queue_reg_write(nic, NIC_QSET_RBDR_0_1_THRESH,
+ qidx, rbdr->thresh - 1);
+}
+
+void nicvf_qset_config(struct nicvf *nic, bool enable)
+{
+ struct nic_mbx mbx = {};
+ struct queue_set *qs = nic->qs;
+ struct qs_cfg *qs_cfg;
+
+ qs->enable = enable;
+
+ /* Send a mailbox msg to PF to config Qset */
+ mbx.msg = NIC_PF_VF_MSG_QS_CFG;
+ mbx.data.qs.num = qs->vnic_id;
+
+ mbx.data.qs.cfg = 0;
+ qs_cfg = (struct qs_cfg *)&mbx.data.qs.cfg;
+ if (qs->enable) {
+ qs_cfg->ena = 1;
+#ifdef __BIG_ENDIAN
+ qs_cfg->be = 1;
+#endif
+ qs_cfg->vnic = qs->vnic_id;
+ }
+ nicvf_send_msg_to_pf(nic, &mbx);
+}
+
+static void nicvf_free_resources(struct nicvf *nic)
+{
+ int qidx;
+ struct queue_set *qs = nic->qs;
+
+ if (!qs)
+ return;
+
+ /* Free receive buffer descriptor ring */
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_free_rbdr(nic, &qs->rbdr[qidx], qidx);
+
+ /* Free completion queue */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++)
+ nicvf_free_cmp_queue(nic, &qs->cq[qidx]);
+
+ /* Free send queue */
+ for (qidx = 0; qidx < qs->sq_cnt; qidx++)
+ nicvf_free_snd_queue(nic, &qs->sq[qidx]);
+}
+
+static int nicvf_alloc_resources(struct nicvf *nic)
+{
+ int qidx;
+ struct queue_set *qs = nic->qs;
+
+ /* Alloc receive buffer descriptor ring */
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++) {
+ if (nicvf_init_rbdr(nic, &qs->rbdr[qidx], qs->rbdr_len,
+ RCV_BUFFER_LEN))
+ goto alloc_fail;
+ }
+
+ /* Alloc send queue */
+ for (qidx = 0; qidx < qs->sq_cnt; qidx++) {
+ if (nicvf_init_snd_queue(nic, &qs->sq[qidx], qs->sq_len))
+ goto alloc_fail;
+ }
+
+ /* Alloc completion queue */
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++) {
+ if (nicvf_init_cmp_queue(nic, &qs->cq[qidx], qs->cq_len))
+ goto alloc_fail;
+ }
+
+ return 0;
+alloc_fail:
+ nicvf_free_resources(nic);
+ return -ENOMEM;
+}
+
+int nicvf_set_qset_resources(struct nicvf *nic)
+{
+ struct queue_set *qs;
+
+ qs = kzalloc(sizeof(*qs), GFP_ATOMIC);
+ if (!qs)
+ return -ENOMEM;
+ nic->qs = qs;
+
+ /* Set count of each queue */
+ qs->rbdr_cnt = RBDR_CNT;
+ qs->rq_cnt = RCV_QUEUE_CNT;
+ qs->sq_cnt = SND_QUEUE_CNT;
+ qs->cq_cnt = CMP_QUEUE_CNT;
+
+ /* Set queue lengths */
+ qs->rbdr_len = RCV_BUF_COUNT;
+ qs->sq_len = SND_QUEUE_LEN;
+ qs->cq_len = CMP_QUEUE_LEN;
+ return 0;
+}
+
+int nicvf_config_data_transfer(struct nicvf *nic, bool enable)
+{
+ bool disable = false;
+ struct queue_set *qs = nic->qs;
+ int qidx;
+
+ if (enable) {
+ qs->vnic_id = nic->vf_id;
+ nic->qs = qs;
+
+ if (nicvf_alloc_resources(nic))
+ return -ENOMEM;
+
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_rbdr_config(nic, qs, qidx, enable);
+ for (qidx = 0; qidx < qs->rq_cnt; qidx++)
+ nicvf_rcv_queue_config(nic, qs, qidx, enable);
+ for (qidx = 0; qidx < qs->sq_cnt; qidx++)
+ nicvf_snd_queue_config(nic, qs, qidx, enable);
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++)
+ nicvf_cmp_queue_config(nic, qs, qidx, enable);
+
+ } else {
+ qs = nic->qs;
+ if (!qs)
+ return 0;
+
+ for (qidx = 0; qidx < qs->rbdr_cnt; qidx++)
+ nicvf_rbdr_config(nic, qs, qidx, disable);
+ for (qidx = 0; qidx < qs->rq_cnt; qidx++)
+ nicvf_rcv_queue_config(nic, qs, qidx, disable);
+ for (qidx = 0; qidx < qs->sq_cnt; qidx++)
+ nicvf_snd_queue_config(nic, qs, qidx, disable);
+ for (qidx = 0; qidx < qs->cq_cnt; qidx++)
+ nicvf_cmp_queue_config(nic, qs, qidx, disable);
+
+ nicvf_free_resources(nic);
+ }
+
+ return 0;
+}
+
+/* Get a free desc from send queue
+ * @qs: Qset from which to get a SQ descriptor
+ * @qnum: SQ number (0...7) in the Qset
+ *
+ * returns descriptor ponter & descriptor number
+ */
+static int nicvf_get_sq_desc(struct queue_set *qs, int qnum, void **desc)
+{
+ int qentry;
+ struct snd_queue *sq = &qs->sq[qnum];
+
+ if (!sq->free_cnt)
+ return 0;
+
+ qentry = sq->tail++;
+ sq->free_cnt--;
+ sq->tail &= (sq->dmem.q_len - 1);
+ *desc = GET_SQ_DESC(sq, qentry);
+ return qentry;
+}
+
+void nicvf_put_sq_desc(struct snd_queue *sq, int desc_cnt)
+{
+ while (desc_cnt--) {
+ sq->free_cnt++;
+ sq->head++;
+ sq->head &= (sq->dmem.q_len - 1);
+ }
+}
+
+void nicvf_sq_enable(struct nicvf *nic, struct snd_queue *sq, int qidx)
+{
+ uint64_t sq_cfg;
+
+ sq_cfg = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, qidx);
+ sq_cfg |= NICVF_SQ_EN;
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, sq_cfg);
+ /* Ring doorbell so that H/W restarts processing SQEs */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_DOOR, qidx, 0);
+}
+
+void nicvf_sq_disable(struct nicvf *nic, int qidx)
+{
+ uint64_t sq_cfg;
+
+ sq_cfg = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_CFG, qidx);
+ sq_cfg &= ~NICVF_SQ_EN;
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_CFG, qidx, sq_cfg);
+}
+
+void nicvf_sq_free_used_descs(struct net_device *netdev, struct snd_queue *sq,
+ int qidx)
+{
+ uint64_t head, tail;
+ struct sk_buff *skb;
+ struct nicvf *nic = netdev_priv(netdev);
+ struct sq_hdr_subdesc *hdr;
+
+ head = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_HEAD, qidx) >> 4;
+ tail = nicvf_queue_reg_read(nic, NIC_QSET_SQ_0_7_TAIL, qidx) >> 4;
+ while (sq->head != head) {
+ hdr = (struct sq_hdr_subdesc *)GET_SQ_DESC(sq, sq->head);
+ if (hdr->subdesc_type != SQ_DESC_TYPE_HEADER) {
+ nicvf_put_sq_desc(sq, 1);
+ continue;
+ }
+ skb = (struct sk_buff *)sq->skbuff[sq->head];
+ atomic64_add(1, (atomic64_t *)&netdev->stats.tx_packets);
+ atomic64_add(hdr->tot_len,
+ (atomic64_t *)&netdev->stats.tx_bytes);
+ nicvf_free_skb(nic, skb);
+ nicvf_put_sq_desc(sq, hdr->subdesc_cnt + 1);
+ }
+}
+
+static int nicvf_sq_subdesc_required(struct nicvf *nic, struct sk_buff *skb)
+{
+ int subdesc_cnt = MIN_SND_QUEUE_DESC_FOR_PKT_XMIT;
+
+ if (skb_shinfo(skb)->nr_frags)
+ subdesc_cnt += skb_shinfo(skb)->nr_frags;
+
+#ifdef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+ if (skb->ip_summed == CHECKSUM_PARTIAL) {
+ if (skb->protocol == htons(ETH_P_IP))
+ subdesc_cnt++;
+ if ((ip_hdr(skb)->protocol == IPPROTO_TCP) ||
+ (ip_hdr(skb)->protocol == IPPROTO_UDP))
+ subdesc_cnt++;
+ }
+#endif
+
+ return subdesc_cnt;
+}
+
+/* Add SQ HEADER subdescriptor.
+ * First subdescriptor for every send descriptor.
+ */
+struct sq_hdr_subdesc *
+nicvf_sq_add_hdr_subdesc(struct queue_set *qs, int sq_num,
+ int subdesc_cnt, struct sk_buff *skb)
+{
+ int qentry;
+ void *desc;
+ struct snd_queue *sq;
+ struct sq_hdr_subdesc *hdr;
+
+ sq = &qs->sq[sq_num];
+ qentry = nicvf_get_sq_desc(qs, sq_num, &desc);
+ sq->skbuff[qentry] = (uint64_t)skb;
+
+ hdr = (struct sq_hdr_subdesc *)desc;
+
+ memset(hdr, 0, SND_QUEUE_DESC_SIZE);
+ hdr->subdesc_type = SQ_DESC_TYPE_HEADER;
+ hdr->post_cqe = 1;
+ hdr->subdesc_cnt = subdesc_cnt;
+ hdr->tot_len = skb->len;
+
+#ifdef VNIC_HW_TSO_SUPPORT
+ if (!skb_shinfo(skb)->gso_size)
+ return hdr;
+
+ /* Packet to be subjected to TSO */
+ hdr->tso = 1;
+ hdr->tso_l4_offset = (int)(skb_transport_header(skb) - skb->data) +
+ tcp_hdrlen(skb);
+ hdr->tso_max_paysize = skb_shinfo(skb)->gso_size + hdr->tso_l4_offset;
+ /* TBD: These fields have to be setup properly */
+ hdr->tso_sdc_first = 0;
+ hdr->tso_sdc_cont = 0;
+ hdr->tso_flags_first = 0;
+ hdr->tso_flags_last = 0;
+#endif
+ return hdr;
+}
+
+/* SQ GATHER subdescriptor
+ * Must follow HDR descriptor
+ */
+static void nicvf_sq_add_gather_subdesc(struct nicvf *nic, struct queue_set *qs,
+ int sq_num, struct sk_buff *skb)
+{
+ int i;
+ void *desc;
+ struct sq_gather_subdesc *gather;
+
+ nicvf_get_sq_desc(qs, sq_num, &desc);
+ gather = (struct sq_gather_subdesc *)desc;
+
+ memset(gather, 0, SND_QUEUE_DESC_SIZE);
+ gather->subdesc_type = SQ_DESC_TYPE_GATHER;
+ gather->ld_type = NIC_SEND_LD_TYPE_E_LDD;
+ gather->size = skb_is_nonlinear(skb) ? skb_headlen(skb) : skb->len;
+ gather->addr = pci_map_single(nic->pdev, skb->data,
+ gather->size, PCI_DMA_TODEVICE);
+
+ if (!skb_is_nonlinear(skb))
+ return;
+
+ for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
+ const struct skb_frag_struct *frag;
+
+ frag = &skb_shinfo(skb)->frags[i];
+
+ nicvf_get_sq_desc(qs, sq_num, &desc);
+ gather = (struct sq_gather_subdesc *)desc;
+
+ memset(gather, 0, SND_QUEUE_DESC_SIZE);
+ gather->subdesc_type = SQ_DESC_TYPE_GATHER;
+ gather->ld_type = NIC_SEND_LD_TYPE_E_LDD;
+ gather->size = skb_frag_size(frag);
+ gather->addr = pci_map_single(nic->pdev, skb_frag_address(frag),
+ gather->size, PCI_DMA_TODEVICE);
+ }
+}
+
+#ifdef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+static void nicvf_fill_l3_crc_subdesc(struct sq_crc_subdesc *l3,
+ struct sk_buff *skb)
+{
+ int crc_pos;
+
+ crc_pos = skb_network_header(skb) - skb_mac_header(skb);
+ crc_pos += offsetof(struct iphdr, check);
+
+ l3->subdesc_type = SQ_DESC_TYPE_CRC;
+ l3->crc_alg = SEND_CRCALG_CRC32;
+ l3->crc_insert_pos = crc_pos;
+ l3->hdr_start = skb_network_offset(skb);
+ l3->crc_len = skb_transport_header(skb) - skb_network_header(skb);
+ l3->crc_ival = 0;
+}
+
+static void nicvf_fill_l4_crc_subdesc(struct sq_crc_subdesc *l4,
+ struct sk_buff *skb)
+{
+ l4->subdesc_type = SQ_DESC_TYPE_CRC;
+ l4->crc_alg = SEND_CRCALG_CRC32;
+ l4->crc_insert_pos = skb->csum_start + skb->csum_offset;
+ l4->hdr_start = skb->csum_start;
+ l4->crc_len = skb->len - skb_transport_offset(skb);
+ l4->crc_ival = 0;
+}
+
+/* SQ CRC subdescriptor
+ * Must follow HDR and precede GATHER, IMM subdescriptors
+ */
+static void nicvf_sq_add_crc_subdesc(struct nicvf *nic, struct queue_set *qs,
+ int sq_num, struct sk_buff *skb)
+{
+ int proto;
+ void *desc;
+ struct sq_crc_subdesc *crc;
+ struct snd_queue *sq;
+
+ if (skb->ip_summed != CHECKSUM_PARTIAL)
+ return;
+
+ if (skb->protocol != htons(ETH_P_IP))
+ return;
+
+ sq = &qs->sq[sq_num];
+ nicvf_get_sq_desc(qs, sq_num, &desc);
+
+ crc = (struct sq_crc_subdesc *)desc;
+
+ nicvf_fill_l3_crc_subdesc(crc, skb);
+
+ proto = ip_hdr(skb)->protocol;
+ if ((proto == IPPROTO_TCP) || (proto == IPPROTO_UDP)) {
+ nicvf_get_sq_desc(qs, sq_num, &desc);
+ crc = (struct sq_crc_subdesc *)desc;
+ nicvf_fill_l4_crc_subdesc(crc, skb);
+ }
+}
+#endif
+
+/* Append an skb to a SQ for packet transfer. */
+int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb)
+{
+ int subdesc_cnt;
+ int sq_num;
+ struct queue_set *qs = nic->qs;
+ struct snd_queue *sq;
+ struct sq_hdr_subdesc *hdr_desc;
+
+ sq_num = skb_get_queue_mapping(skb);
+ sq = &qs->sq[sq_num];
+
+ subdesc_cnt = nicvf_sq_subdesc_required(nic, skb);
+
+ if (subdesc_cnt > sq->free_cnt)
+ goto append_fail;
+
+ /* Add SQ header subdesc */
+ hdr_desc = nicvf_sq_add_hdr_subdesc(qs, sq_num, subdesc_cnt - 1, skb);
+
+#ifdef VNIC_TX_CSUM_OFFLOAD_SUPPORT
+ /* Add CRC subdescriptor for IP/TCP/UDP (L3/L4) crc calculation */
+ if (skb->ip_summed == CHECKSUM_PARTIAL)
+ nicvf_sq_add_crc_subdesc(nic, qs, sq_num, skb);
+#endif
+
+ /* Add SQ gather subdesc */
+ nicvf_sq_add_gather_subdesc(nic, qs, sq_num, skb);
+
+ /* Inform HW to xmit new packet */
+ nicvf_queue_reg_write(nic, NIC_QSET_SQ_0_7_DOOR,
+ sq_num, subdesc_cnt);
+ return 1;
+
+append_fail:
+ nic_dbg(&nic->pdev->dev, "Not enough SQ descriptors to xmit pkt\n");
+ return 0;
+}
+
+static unsigned frag_num(unsigned i)
+{
+#ifdef __BIG_ENDIAN
+ return (i & ~3) + 3 - (i & 3);
+#else
+ return i;
+#endif
+}
+
+struct sk_buff *nicvf_get_rcv_skb(struct nicvf *nic, void *cq_desc)
+{
+ int frag;
+ int payload_len = 0;
+ struct sk_buff *skb = NULL;
+ struct sk_buff *skb_frag = NULL;
+ struct sk_buff *prev_frag = NULL;
+ struct cqe_rx_t *cqe_rx;
+ struct rbdr *rbdr;
+ struct rcv_queue *rq;
+ struct queue_set *qs = nic->qs;
+ uint16_t *rb_lens = NULL;
+ uint64_t *rb_ptrs = NULL;
+
+ cqe_rx = (struct cqe_rx_t *)cq_desc;
+
+ rq = &qs->rq[cqe_rx->rq_idx];
+ rbdr = &qs->rbdr[rq->start_qs_rbdr_idx];
+ rb_lens = cq_desc + (3 * sizeof(uint64_t)); /* Use offsetof */
+ rb_ptrs = cq_desc + (6 * sizeof(uint64_t));
+ nic_dbg(&nic->pdev->dev, "%s rb_cnt %d rb0_ptr %llx rb0_sz %d\n",
+ __func__, cqe_rx->rb_cnt, cqe_rx->rb0_ptr, cqe_rx->rb0_sz);
+
+ for (frag = 0; frag < cqe_rx->rb_cnt; frag++) {
+ payload_len = rb_lens[frag_num(frag)];
+ if (!frag) {
+ /* First fragment */
+ pci_unmap_single(nic->pdev, (dma_addr_t)(*rb_ptrs),
+ rbdr->buf_size, PCI_DMA_FROMDEVICE);
+ skb = nicvf_rb_ptr_to_skb(nic, *rb_ptrs);
+ if (cqe_rx->align_pad) {
+ skb->data += cqe_rx->align_pad;
+ skb->tail += cqe_rx->align_pad;
+ }
+ skb_put(skb, payload_len);
+ } else {
+ /* Add fragments */
+ pci_unmap_single(nic->pdev, (dma_addr_t)(*rb_ptrs),
+ rbdr->buf_size, PCI_DMA_FROMDEVICE);
+ skb_frag = nicvf_rb_ptr_to_skb(nic, *rb_ptrs);
+
+ if (!skb_shinfo(skb)->frag_list)
+ skb_shinfo(skb)->frag_list = skb_frag;
+ else
+ prev_frag->next = skb_frag;
+
+ prev_frag = skb_frag;
+ skb->len += payload_len;
+ skb->data_len += payload_len;
+ skb_frag->len = payload_len;
+ }
+ /* Next buffer pointer */
+ rb_ptrs++;
+ }
+ return skb;
+}
+
+/* Enable interrupt */
+void nicvf_enable_intr(struct nicvf *nic, int int_type, int q_idx)
+{
+ uint64_t reg_val;
+
+ reg_val = nicvf_reg_read(nic, NIC_VF_ENA_W1S);
+
+ switch (int_type) {
+ case NICVF_INTR_CQ:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_CQ_SHIFT);
+ break;
+ case NICVF_INTR_SQ:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_SQ_SHIFT);
+ break;
+ case NICVF_INTR_RBDR:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_RBDR_SHIFT);
+ break;
+ case NICVF_INTR_PKT_DROP:
+ reg_val |= (1ULL << NICVF_INTR_PKT_DROP_SHIFT);
+ break;
+ case NICVF_INTR_TCP_TIMER:
+ reg_val |= (1ULL << NICVF_INTR_TCP_TIMER_SHIFT);
+ break;
+ case NICVF_INTR_MBOX:
+ reg_val |= (1ULL << NICVF_INTR_MBOX_SHIFT);
+ break;
+ case NICVF_INTR_QS_ERR:
+ reg_val |= (1ULL << NICVF_INTR_QS_ERR_SHIFT);
+ break;
+ default:
+ netdev_err(nic->netdev,
+ "Failed to enable interrupt: unknown type\n");
+ break;
+ }
+
+ nicvf_reg_write(nic, NIC_VF_ENA_W1S, reg_val);
+}
+
+/* Disable interrupt */
+void nicvf_disable_intr(struct nicvf *nic, int int_type, int q_idx)
+{
+ uint64_t reg_val = 0;
+
+ switch (int_type) {
+ case NICVF_INTR_CQ:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_CQ_SHIFT);
+ break;
+ case NICVF_INTR_SQ:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_SQ_SHIFT);
+ break;
+ case NICVF_INTR_RBDR:
+ reg_val |= ((1ULL << q_idx) << NICVF_INTR_RBDR_SHIFT);
+ break;
+ case NICVF_INTR_PKT_DROP:
+ reg_val |= (1ULL << NICVF_INTR_PKT_DROP_SHIFT);
+ break;
+ case NICVF_INTR_TCP_TIMER:
+ reg_val |= (1ULL << NICVF_INTR_TCP_TIMER_SHIFT);
+ break;
+ case NICVF_INTR_MBOX:
+ reg_val |= (1ULL << NICVF_INTR_MBOX_SHIFT);
+ break;
+ case NICVF_INTR_QS_ERR:
+ reg_val |= (1ULL << NICVF_INTR_QS_ERR_SHIFT);
+ break;
+ default:
+ netdev_err(nic->netdev,
+ "Failed to disable interrupt: unknown type\n");
+ break;
+ }
+
+ nicvf_reg_write(nic, NIC_VF_ENA_W1C, reg_val);
+}
+
+/* Clear interrupt */
+void nicvf_clear_intr(struct nicvf *nic, int int_type, int q_idx)
+{
+ uint64_t reg_val = 0;
+
+ switch (int_type) {
+ case NICVF_INTR_CQ:
+ reg_val = ((1ULL << q_idx) << NICVF_INTR_CQ_SHIFT);
+ break;
+ case NICVF_INTR_SQ:
+ reg_val = ((1ULL << q_idx) << NICVF_INTR_SQ_SHIFT);
+ break;
+ case NICVF_INTR_RBDR:
+ reg_val = ((1ULL << q_idx) << NICVF_INTR_RBDR_SHIFT);
+ break;
+ case NICVF_INTR_PKT_DROP:
+ reg_val = (1ULL << NICVF_INTR_PKT_DROP_SHIFT);
+ break;
+ case NICVF_INTR_TCP_TIMER:
+ reg_val = (1ULL << NICVF_INTR_TCP_TIMER_SHIFT);
+ break;
+ case NICVF_INTR_MBOX:
+ reg_val = (1ULL << NICVF_INTR_MBOX_SHIFT);
+ break;
+ case NICVF_INTR_QS_ERR:
+ reg_val |= (1ULL << NICVF_INTR_QS_ERR_SHIFT);
+ break;
+ default:
+ netdev_err(nic->netdev,
+ "Failed to clear interrupt: unknown type\n");
+ break;
+ }
+
+ nicvf_reg_write(nic, NIC_VF_INT, reg_val);
+}
+
+/* Check if interrupt is enabled */
+int nicvf_is_intr_enabled(struct nicvf *nic, int int_type, int q_idx)
+{
+ uint64_t reg_val;
+ uint64_t mask = 0xff;
+
+ reg_val = nicvf_reg_read(nic, NIC_VF_ENA_W1S);
+
+ switch (int_type) {
+ case NICVF_INTR_CQ:
+ mask = ((1ULL << q_idx) << NICVF_INTR_CQ_SHIFT);
+ break;
+ case NICVF_INTR_SQ:
+ mask = ((1ULL << q_idx) << NICVF_INTR_SQ_SHIFT);
+ break;
+ case NICVF_INTR_RBDR:
+ mask = ((1ULL << q_idx) << NICVF_INTR_RBDR_SHIFT);
+ break;
+ case NICVF_INTR_PKT_DROP:
+ mask = NICVF_INTR_PKT_DROP_MASK;
+ break;
+ case NICVF_INTR_TCP_TIMER:
+ mask = NICVF_INTR_TCP_TIMER_MASK;
+ break;
+ case NICVF_INTR_MBOX:
+ mask = NICVF_INTR_MBOX_MASK;
+ break;
+ case NICVF_INTR_QS_ERR:
+ mask = NICVF_INTR_QS_ERR_MASK;
+ break;
+ default:
+ netdev_err(nic->netdev,
+ "Failed to check interrupt enable: unknown type\n");
+ break;
+ }
+
+ return (reg_val & mask);
+}
+
+void nicvf_update_rq_stats(struct nicvf *nic, int rq_idx)
+{
+ struct rcv_queue *rq;
+
+#define GET_RQ_STATS(reg) \
+ nicvf_reg_read(nic, NIC_QSET_RQ_0_7_STAT_0_1 |\
+ (rq_idx << NIC_Q_NUM_SHIFT) | (reg << 3))
+
+ rq = &nic->qs->rq[rq_idx];
+ rq->stats.bytes = GET_RQ_STATS(RQ_SQ_STATS_OCTS);
+ rq->stats.pkts = GET_RQ_STATS(RQ_SQ_STATS_PKTS);
+}
+
+void nicvf_update_sq_stats(struct nicvf *nic, int sq_idx)
+{
+ struct snd_queue *sq;
+
+#define GET_SQ_STATS(reg) \
+ nicvf_reg_read(nic, NIC_QSET_SQ_0_7_STAT_0_1 |\
+ (sq_idx << NIC_Q_NUM_SHIFT) | (reg << 3))
+
+ sq = &nic->qs->sq[sq_idx];
+ sq->stats.bytes = GET_SQ_STATS(RQ_SQ_STATS_OCTS);
+ sq->stats.pkts = GET_SQ_STATS(RQ_SQ_STATS_PKTS);
+}
+
+/* Check for errors in the receive cmp.queue entry */
+int nicvf_check_cqe_rx_errs(struct nicvf *nic,
+ struct cmp_queue *cq, void *cq_desc)
+{
+ struct cqe_rx_t *cqe_rx;
+ struct cmp_queue_stats *stats = &cq->stats;
+
+ cqe_rx = (struct cqe_rx_t *)cq_desc;
+ if (!cqe_rx->err_level && !cqe_rx->err_opcode) {
+ stats->rx.errop.good++;
+ return 0;
+ }
+
+ switch (cqe_rx->err_level) {
+ case CQ_ERRLVL_MAC:
+ stats->rx.errlvl.mac_errs++;
+ break;
+ case CQ_ERRLVL_L2:
+ stats->rx.errlvl.l2_errs++;
+ break;
+ case CQ_ERRLVL_L3:
+ stats->rx.errlvl.l3_errs++;
+ break;
+ case CQ_ERRLVL_L4:
+ stats->rx.errlvl.l4_errs++;
+ break;
+ }
+
+ switch (cqe_rx->err_opcode) {
+ case CQ_RX_ERROP_RE_PARTIAL:
+ stats->rx.errop.partial_pkts++;
+ break;
+ case CQ_RX_ERROP_RE_JABBER:
+ stats->rx.errop.jabber_errs++;
+ break;
+ case CQ_RX_ERROP_RE_FCS:
+ stats->rx.errop.fcs_errs++;
+ break;
+ case CQ_RX_ERROP_RE_TERMINATE:
+ stats->rx.errop.terminate_errs++;
+ break;
+ case CQ_RX_ERROP_RE_RX_CTL:
+ stats->rx.errop.bgx_rx_errs++;
+ break;
+ case CQ_RX_ERROP_PREL2_ERR:
+ stats->rx.errop.prel2_errs++;
+ break;
+ case CQ_RX_ERROP_L2_FRAGMENT:
+ stats->rx.errop.l2_frags++;
+ break;
+ case CQ_RX_ERROP_L2_OVERRUN:
+ stats->rx.errop.l2_overruns++;
+ break;
+ case CQ_RX_ERROP_L2_PFCS:
+ stats->rx.errop.l2_pfcs++;
+ break;
+ case CQ_RX_ERROP_L2_PUNY:
+ stats->rx.errop.l2_puny++;
+ break;
+ case CQ_RX_ERROP_L2_MAL:
+ stats->rx.errop.l2_hdr_malformed++;
+ break;
+ case CQ_RX_ERROP_L2_OVERSIZE:
+ stats->rx.errop.l2_oversize++;
+ break;
+ case CQ_RX_ERROP_L2_UNDERSIZE:
+ stats->rx.errop.l2_undersize++;
+ break;
+ case CQ_RX_ERROP_L2_LENMISM:
+ stats->rx.errop.l2_len_mismatch++;
+ break;
+ case CQ_RX_ERROP_L2_PCLP:
+ stats->rx.errop.l2_pclp++;
+ break;
+ case CQ_RX_ERROP_IP_NOT:
+ stats->rx.errop.non_ip++;
+ break;
+ case CQ_RX_ERROP_IP_CSUM_ERR:
+ stats->rx.errop.ip_csum_err++;
+ break;
+ case CQ_RX_ERROP_IP_MAL:
+ stats->rx.errop.ip_hdr_malformed++;
+ break;
+ case CQ_RX_ERROP_IP_MALD:
+ stats->rx.errop.ip_payload_malformed++;
+ break;
+ case CQ_RX_ERROP_IP_HOP:
+ stats->rx.errop.ip_hop_errs++;
+ break;
+ case CQ_RX_ERROP_L3_ICRC:
+ stats->rx.errop.l3_icrc_errs++;
+ break;
+ case CQ_RX_ERROP_L3_PCLP:
+ stats->rx.errop.l3_pclp++;
+ break;
+ case CQ_RX_ERROP_L4_MAL:
+ stats->rx.errop.l4_malformed++;
+ break;
+ case CQ_RX_ERROP_L4_CHK:
+ stats->rx.errop.l4_csum_errs++;
+ break;
+ case CQ_RX_ERROP_UDP_LEN:
+ stats->rx.errop.udp_len_err++;
+ break;
+ case CQ_RX_ERROP_L4_PORT:
+ stats->rx.errop.bad_l4_port++;
+ break;
+ case CQ_RX_ERROP_TCP_FLAG:
+ stats->rx.errop.bad_tcp_flag++;
+ break;
+ case CQ_RX_ERROP_TCP_OFFSET:
+ stats->rx.errop.tcp_offset_errs++;
+ break;
+ case CQ_RX_ERROP_L4_PCLP:
+ stats->rx.errop.l4_pclp++;
+ break;
+ case CQ_RX_ERROP_RBDR_TRUNC:
+ stats->rx.errop.pkt_truncated++;
+ break;
+ }
+
+ return 1;
+}
+
+/* Check for errors in the send cmp.queue entry */
+int nicvf_check_cqe_tx_errs(struct nicvf *nic,
+ struct cmp_queue *cq, void *cq_desc)
+{
+ struct cqe_send_t *cqe_tx;
+ struct cmp_queue_stats *stats = &cq->stats;
+
+ cqe_tx = (struct cqe_send_t *)cq_desc;
+ switch (cqe_tx->send_status) {
+ case CQ_TX_ERROP_GOOD:
+ stats->tx.good++;
+ return 0;
+ break;
+ case CQ_TX_ERROP_DESC_FAULT:
+ stats->tx.desc_fault++;
+ break;
+ case CQ_TX_ERROP_HDR_CONS_ERR:
+ stats->tx.hdr_cons_err++;
+ break;
+ case CQ_TX_ERROP_SUBDC_ERR:
+ stats->tx.subdesc_err++;
+ break;
+ case CQ_TX_ERROP_IMM_SIZE_OFLOW:
+ stats->tx.imm_size_oflow++;
+ break;
+ case CQ_TX_ERROP_DATA_SEQUENCE_ERR:
+ stats->tx.data_seq_err++;
+ break;
+ case CQ_TX_ERROP_MEM_SEQUENCE_ERR:
+ stats->tx.mem_seq_err++;
+ break;
+ case CQ_TX_ERROP_LOCK_VIOL:
+ stats->tx.lock_viol++;
+ break;
+ case CQ_TX_ERROP_DATA_FAULT:
+ stats->tx.data_fault++;
+ break;
+ case CQ_TX_ERROP_TSTMP_CONFLICT:
+ stats->tx.tstmp_conflict++;
+ break;
+ case CQ_TX_ERROP_TSTMP_TIMEOUT:
+ stats->tx.tstmp_timeout++;
+ break;
+ case CQ_TX_ERROP_MEM_FAULT:
+ stats->tx.mem_fault++;
+ break;
+ case CQ_TX_ERROP_CK_OVERLAP:
+ stats->tx.csum_overlap++;
+ break;
+ case CQ_TX_ERROP_CK_OFLOW:
+ stats->tx.csum_overflow++;
+ break;
+ }
+
+ return 1;
+}
diff --git a/drivers/net/ethernet/cavium/thunder/nicvf_queues.h b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h
new file mode 100644
index 000000000000..f3383492d114
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/nicvf_queues.h
@@ -0,0 +1,355 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2014 Cavium, Inc.
+ */
+
+#ifndef NICVF_QUEUES_H
+#define NICVF_QUEUES_H
+
+#include "q_struct.h"
+
+#define MAX_QUEUE_SET 128
+#define MAX_RCV_QUEUES_PER_QS 8
+#define MAX_RCV_BUF_DESC_RINGS_PER_QS 2
+#define MAX_SND_QUEUES_PER_QS 8
+#define MAX_CMP_QUEUES_PER_QS 8
+
+/* VF's queue interrupt ranges */
+#define NICVF_INTR_ID_CQ 0
+#define NICVF_INTR_ID_SQ 8
+#define NICVF_INTR_ID_RBDR 16
+#define NICVF_INTR_ID_MISC 18
+#define NICVF_INTR_ID_QS_ERR 19
+
+#define for_each_cq_irq(irq) \
+ for (irq = NICVF_INTR_ID_CQ; irq < NICVF_INTR_ID_SQ; irq++)
+#define for_each_sq_irq(irq) \
+ for (irq = NICVF_INTR_ID_SQ; irq < NICVF_INTR_ID_RBDR; irq++)
+#define for_each_rbdr_irq(irq) \
+ for (irq = NICVF_INTR_ID_RBDR; irq < NICVF_INTR_ID_MISC; irq++)
+
+#define RBDR_SIZE0 0ULL /* 8K entries */
+#define RBDR_SIZE1 1ULL /* 16K entries */
+#define RBDR_SIZE2 2ULL /* 32K entries */
+#define RBDR_SIZE3 3ULL /* 64K entries */
+#define RBDR_SIZE4 4ULL /* 126K entries */
+#define RBDR_SIZE5 5ULL /* 256K entries */
+#define RBDR_SIZE6 6ULL /* 512K entries */
+
+#define SND_QUEUE_SIZE0 0ULL /* 1K entries */
+#define SND_QUEUE_SIZE1 1ULL /* 2K entries */
+#define SND_QUEUE_SIZE2 2ULL /* 4K entries */
+#define SND_QUEUE_SIZE3 3ULL /* 8K entries */
+#define SND_QUEUE_SIZE4 4ULL /* 16K entries */
+#define SND_QUEUE_SIZE5 5ULL /* 32K entries */
+#define SND_QUEUE_SIZE6 6ULL /* 64K entries */
+
+#define CMP_QUEUE_SIZE0 0ULL /* 1K entries */
+#define CMP_QUEUE_SIZE1 1ULL /* 2K entries */
+#define CMP_QUEUE_SIZE2 2ULL /* 4K entries */
+#define CMP_QUEUE_SIZE3 3ULL /* 8K entries */
+#define CMP_QUEUE_SIZE4 4ULL /* 16K entries */
+#define CMP_QUEUE_SIZE5 5ULL /* 32K entries */
+#define CMP_QUEUE_SIZE6 6ULL /* 64K entries */
+
+/* Default queue count per QS, its lengths and threshold values */
+#define RBDR_CNT 1
+#define RCV_QUEUE_CNT 1
+#define SND_QUEUE_CNT 8
+#define CMP_QUEUE_CNT 8 /* Max of RCV and SND qcount */
+
+#define SND_QUEUE_LEN (1ULL << (SND_QUEUE_SIZE0 + 10))
+#define SND_QUEUE_THRESH 2ULL
+
+#define CMP_QUEUE_LEN (1ULL << (CMP_QUEUE_SIZE1 + 10))
+#define CMP_QUEUE_CQE_THRESH 10
+#define CMP_QUEUE_TIMER_THRESH 1000 /* 1 ms */
+
+#define RCV_BUF_COUNT (1ULL << (RBDR_SIZE0 + 13))
+#define RBDR_THRESH (RCV_BUF_COUNT / 2)
+#define RCV_BUFFER_LEN 2048 /* In multiples of 128bytes */
+#define RQ_CQ_DROP ((CMP_QUEUE_LEN - SND_QUEUE_LEN) / 256)
+
+/* Descriptor size */
+#define SND_QUEUE_DESC_SIZE 16 /* 128 bits */
+#define CMP_QUEUE_DESC_SIZE 512
+
+/* Buffer / descriptor alignments */
+#define NICVF_RCV_BUF_ALIGN 7
+#define NICVF_RCV_BUF_ALIGN_BYTES (1ULL << NICVF_RCV_BUF_ALIGN)
+#define NICVF_CQ_BASE_ALIGN_BYTES 512 /* 9 bits */
+#define NICVF_SQ_BASE_ALIGN_BYTES 128 /* 7 bits */
+
+#define NICVF_ALIGNED_ADDR(ADDR, ALIGN_BYTES) ALIGN(ADDR, ALIGN_BYTES)
+#define NICVF_ADDR_ALIGN_LEN(ADDR, BYTES)\
+ (NICVF_ALIGNED_ADDR(ADDR, BYTES) - BYTES)
+#define NICVF_RCV_BUF_ALIGN_LEN(X)\
+ (NICVF_ALIGNED_ADDR(X, NICVF_RCV_BUF_ALIGN_BYTES) - X)
+
+/* Queue enable/disable */
+#define NICVF_SQ_EN (1ULL << 19)
+
+/* Queue reset */
+#define NICVF_CQ_RESET (1ULL << 41)
+#define NICVF_SQ_RESET (1ULL << 17)
+#define NICVF_RBDR_RESET (1ULL << 43)
+
+enum CQ_RX_ERRLVL_E {
+ CQ_ERRLVL_MAC,
+ CQ_ERRLVL_L2,
+ CQ_ERRLVL_L3,
+ CQ_ERRLVL_L4,
+};
+
+enum CQ_RX_ERROP_E {
+ CQ_RX_ERROP_RE_NONE = 0x0,
+ CQ_RX_ERROP_RE_PARTIAL = 0x1,
+ CQ_RX_ERROP_RE_JABBER = 0x2,
+ CQ_RX_ERROP_RE_FCS = 0x7,
+ CQ_RX_ERROP_RE_TERMINATE = 0x9,
+ CQ_RX_ERROP_RE_RX_CTL = 0xb,
+ CQ_RX_ERROP_PREL2_ERR = 0x1f,
+ CQ_RX_ERROP_L2_FRAGMENT = 0x20,
+ CQ_RX_ERROP_L2_OVERRUN = 0x21,
+ CQ_RX_ERROP_L2_PFCS = 0x22,
+ CQ_RX_ERROP_L2_PUNY = 0x23,
+ CQ_RX_ERROP_L2_MAL = 0x24,
+ CQ_RX_ERROP_L2_OVERSIZE = 0x25,
+ CQ_RX_ERROP_L2_UNDERSIZE = 0x26,
+ CQ_RX_ERROP_L2_LENMISM = 0x27,
+ CQ_RX_ERROP_L2_PCLP = 0x28,
+ CQ_RX_ERROP_IP_NOT = 0x41,
+ CQ_RX_ERROP_IP_CSUM_ERR = 0x42,
+ CQ_RX_ERROP_IP_MAL = 0x43,
+ CQ_RX_ERROP_IP_MALD = 0x44,
+ CQ_RX_ERROP_IP_HOP = 0x45,
+ CQ_RX_ERROP_L3_ICRC = 0x46,
+ CQ_RX_ERROP_L3_PCLP = 0x47,
+ CQ_RX_ERROP_L4_MAL = 0x61,
+ CQ_RX_ERROP_L4_CHK = 0x62,
+ CQ_RX_ERROP_UDP_LEN = 0x63,
+ CQ_RX_ERROP_L4_PORT = 0x64,
+ CQ_RX_ERROP_TCP_FLAG = 0x65,
+ CQ_RX_ERROP_TCP_OFFSET = 0x66,
+ CQ_RX_ERROP_L4_PCLP = 0x67,
+ CQ_RX_ERROP_RBDR_TRUNC = 0x70,
+};
+
+enum CQ_TX_ERROP_E {
+ CQ_TX_ERROP_GOOD = 0x0,
+ CQ_TX_ERROP_DESC_FAULT = 0x10,
+ CQ_TX_ERROP_HDR_CONS_ERR = 0x11,
+ CQ_TX_ERROP_SUBDC_ERR = 0x12,
+ CQ_TX_ERROP_IMM_SIZE_OFLOW = 0x80,
+ CQ_TX_ERROP_DATA_SEQUENCE_ERR = 0x81,
+ CQ_TX_ERROP_MEM_SEQUENCE_ERR = 0x82,
+ CQ_TX_ERROP_LOCK_VIOL = 0x83,
+ CQ_TX_ERROP_DATA_FAULT = 0x84,
+ CQ_TX_ERROP_TSTMP_CONFLICT = 0x85,
+ CQ_TX_ERROP_TSTMP_TIMEOUT = 0x86,
+ CQ_TX_ERROP_MEM_FAULT = 0x87,
+ CQ_TX_ERROP_CK_OVERLAP = 0x88,
+ CQ_TX_ERROP_CK_OFLOW = 0x89,
+ CQ_TX_ERROP_ENUM_LAST = 0x8a,
+};
+
+struct cmp_queue_stats {
+ struct rx_stats {
+ struct {
+ u64 mac_errs;
+ u64 l2_errs;
+ u64 l3_errs;
+ u64 l4_errs;
+ } errlvl;
+ struct {
+ u64 good;
+ u64 partial_pkts;
+ u64 jabber_errs;
+ u64 fcs_errs;
+ u64 terminate_errs;
+ u64 bgx_rx_errs;
+ u64 prel2_errs;
+ u64 l2_frags;
+ u64 l2_overruns;
+ u64 l2_pfcs;
+ u64 l2_puny;
+ u64 l2_hdr_malformed;
+ u64 l2_oversize;
+ u64 l2_undersize;
+ u64 l2_len_mismatch;
+ u64 l2_pclp;
+ u64 non_ip;
+ u64 ip_csum_err;
+ u64 ip_hdr_malformed;
+ u64 ip_payload_malformed;
+ u64 ip_hop_errs;
+ u64 l3_icrc_errs;
+ u64 l3_pclp;
+ u64 l4_malformed;
+ u64 l4_csum_errs;
+ u64 udp_len_err;
+ u64 bad_l4_port;
+ u64 bad_tcp_flag;
+ u64 tcp_offset_errs;
+ u64 l4_pclp;
+ u64 pkt_truncated;
+ } errop;
+ } rx;
+ struct tx_stats {
+ u64 good;
+ u64 desc_fault;
+ u64 hdr_cons_err;
+ u64 subdesc_err;
+ u64 imm_size_oflow;
+ u64 data_seq_err;
+ u64 mem_seq_err;
+ u64 lock_viol;
+ u64 data_fault;
+ u64 tstmp_conflict;
+ u64 tstmp_timeout;
+ u64 mem_fault;
+ u64 csum_overlap;
+ u64 csum_overflow;
+ } tx;
+};
+
+enum RQ_SQ_STATS {
+ RQ_SQ_STATS_OCTS,
+ RQ_SQ_STATS_PKTS,
+};
+
+struct rx_tx_queue_stats {
+ u64 bytes;
+ u64 pkts;
+};
+
+struct q_desc_mem {
+ dma_addr_t dma;
+ uint64_t size;
+ uint16_t q_len;
+ dma_addr_t phys_base;
+ void *base;
+ void *unalign_base;
+};
+
+struct rbdr {
+ bool enable;
+ uint32_t buf_size;
+ uint32_t thresh; /* Threshold level for interrupt */
+ void *desc;
+ struct q_desc_mem dmem;
+};
+
+struct rcv_queue {
+ bool enable;
+ struct rbdr *rbdr_start;
+ struct rbdr *rbdr_cont;
+ bool en_tcp_reassembly;
+ uint8_t cq_qs; /* CQ's QS to which this RQ is assigned */
+ uint8_t cq_idx; /* CQ index (0 to 7) in the QS */
+ uint8_t cont_rbdr_qs; /* Continue buffer ptrs - QS num */
+ uint8_t cont_qs_rbdr_idx; /* RBDR idx in the cont QS */
+ uint8_t start_rbdr_qs; /* First buffer ptrs - QS num */
+ uint8_t start_qs_rbdr_idx; /* RBDR idx in the above QS */
+ uint8_t caching;
+ struct rx_tx_queue_stats stats;
+};
+
+struct cmp_queue {
+ bool enable;
+ uint8_t intr_timer_thresh;
+ uint16_t thresh;
+ spinlock_t cq_lock; /* lock to serialize processing CQEs */
+ void *desc;
+ struct q_desc_mem dmem;
+ struct cmp_queue_stats stats;
+};
+
+struct snd_queue {
+ bool enable;
+ uint8_t cq_qs; /* CQ's QS to which this SQ is pointing */
+ uint8_t cq_idx; /* CQ index (0 to 7) in the above QS */
+ uint16_t thresh;
+ uint16_t free_cnt;
+ uint64_t head;
+ uint64_t tail;
+ uint64_t *skbuff;
+ void *desc;
+ struct q_desc_mem dmem;
+ struct rx_tx_queue_stats stats;
+};
+
+struct queue_set {
+ bool enable;
+ bool be_en;
+ uint8_t vnic_id;
+ uint8_t rq_cnt;
+ uint8_t cq_cnt;
+ uint64_t cq_len;
+ uint8_t sq_cnt;
+ uint64_t sq_len;
+ uint8_t rbdr_cnt;
+ uint64_t rbdr_len;
+ struct rcv_queue rq[MAX_RCV_QUEUES_PER_QS];
+ struct cmp_queue cq[MAX_CMP_QUEUES_PER_QS];
+ struct snd_queue sq[MAX_SND_QUEUES_PER_QS];
+ struct rbdr rbdr[MAX_RCV_BUF_DESC_RINGS_PER_QS];
+};
+
+#define GET_RBDR_DESC(RING, idx)\
+ (&(((struct rbdr_entry_t *)((RING)->desc))[idx]))
+#define GET_SQ_DESC(RING, idx)\
+ (&(((struct sq_hdr_subdesc *)((RING)->desc))[idx]))
+#define GET_CQ_DESC(RING, idx)\
+ (&(((union cq_desc_t *)((RING)->desc))[idx]))
+
+/* CQ status bits */
+#define CQ_WR_FULL (1 << 26)
+#define CQ_WR_DISABLE (1 << 25)
+#define CQ_WR_FAULT (1 << 24)
+#define CQ_CQE_COUNT (0xFFFF << 0)
+
+#define CQ_ERR_MASK (CQ_WR_FULL | CQ_WR_DISABLE | CQ_WR_FAULT)
+
+int nicvf_set_qset_resources(struct nicvf *nic);
+int nicvf_config_data_transfer(struct nicvf *nic, bool enable);
+void nicvf_qset_config(struct nicvf *nic, bool enable);
+void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs,
+ int qidx, bool enable);
+
+void nicvf_sq_enable(struct nicvf *nic, struct snd_queue *sq, int qidx);
+void nicvf_sq_disable(struct nicvf *nic, int qidx);
+void nicvf_put_sq_desc(struct snd_queue *sq, int desc_cnt);
+void nicvf_sq_free_used_descs(struct net_device *netdev,
+ struct snd_queue *sq, int qidx);
+int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb);
+
+struct sk_buff *nicvf_get_rcv_skb(struct nicvf *nic, void *cq_desc);
+void nicvf_refill_rbdr(unsigned long data);
+
+void nicvf_enable_intr(struct nicvf *nic, int int_type, int q_idx);
+void nicvf_disable_intr(struct nicvf *nic, int int_type, int q_idx);
+void nicvf_clear_intr(struct nicvf *nic, int int_type, int q_idx);
+int nicvf_is_intr_enabled(struct nicvf *nic, int int_type, int q_idx);
+
+/* Register access APIs */
+void nicvf_reg_write(struct nicvf *nic, uint64_t offset, uint64_t val);
+uint64_t nicvf_reg_read(struct nicvf *nic, uint64_t offset);
+void nicvf_qset_reg_write(struct nicvf *nic, uint64_t offset, uint64_t val);
+uint64_t nicvf_qset_reg_read(struct nicvf *nic, uint64_t offset);
+void nicvf_queue_reg_write(struct nicvf *nic, uint64_t offset,
+ uint64_t qidx, uint64_t val);
+uint64_t nicvf_queue_reg_read(struct nicvf *nic,
+ uint64_t offset, uint64_t qidx);
+
+/* Stats */
+void nicvf_update_rq_stats(struct nicvf *nic, int rq_idx);
+void nicvf_update_sq_stats(struct nicvf *nic, int sq_idx);
+int nicvf_check_cqe_rx_errs(struct nicvf *nic,
+ struct cmp_queue *cq, void *cq_desc);
+int nicvf_check_cqe_tx_errs(struct nicvf *nic,
+ struct cmp_queue *cq, void *cq_desc);
+#endif /* NICVF_QUEUES_H */
diff --git a/drivers/net/ethernet/cavium/thunder/q_struct.h b/drivers/net/ethernet/cavium/thunder/q_struct.h
new file mode 100644
index 000000000000..5b78df5840ca
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/q_struct.h
@@ -0,0 +1,690 @@
+/*
+ * This file contains HW queue descriptor formats, config register
+ * structures e.t.c
+ *
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#ifndef Q_STRUCT_H
+#define Q_STRUCT_H
+
+/* Load transaction types for reading segment bytes specified by
+ * NIC_SEND_GATHER_S[LD_TYPE].
+ */
+enum nic_send_ld_type_e {
+ NIC_SEND_LD_TYPE_E_LDD = 0x0,
+ NIC_SEND_LD_TYPE_E_LDT = 0x1,
+ NIC_SEND_LD_TYPE_E_LDWB = 0x2,
+ NIC_SEND_LD_TYPE_E_ENUM_LAST = 0x3,
+};
+
+enum ether_type_algorithm {
+ ETYPE_ALG_NONE = 0x0,
+ ETYPE_ALG_SKIP = 0x1,
+ ETYPE_ALG_ENDPARSE = 0x2,
+ ETYPE_ALG_VLAN = 0x3,
+ ETYPE_ALG_VLAN_STRIP = 0x4,
+};
+
+enum layer3_type {
+ L3TYPE_NONE = 0x00,
+ L3TYPE_GRH = 0x01,
+ L3TYPE_IPV4 = 0x04,
+ L3TYPE_IPV4_OPTIONS = 0x05,
+ L3TYPE_IPV6 = 0x06,
+ L3TYPE_IPV6_OPTIONS = 0x07,
+ L3TYPE_ET_STOP = 0x0D,
+ L3TYPE_OTHER = 0x0E,
+};
+
+enum layer4_type {
+ L4TYPE_NONE = 0x00,
+ L4TYPE_IPSEC_ESP = 0x01,
+ L4TYPE_IPFRAG = 0x02,
+ L4TYPE_IPCOMP = 0x03,
+ L4TYPE_TCP = 0x04,
+ L4TYPE_UDP = 0x05,
+ L4TYPE_SCTP = 0x06,
+ L4TYPE_GRE = 0x07,
+ L4TYPE_ROCE_BTH = 0x08,
+ L4TYPE_OTHER = 0x0E,
+};
+
+/* CPI and RSSI configuration */
+enum cpi_algorithm_type {
+ CPI_ALG_NONE = 0x0,
+ CPI_ALG_VLAN = 0x1,
+ CPI_ALG_VLAN16 = 0x2,
+ CPI_ALG_DIFF = 0x3,
+};
+
+enum rss_algorithm_type {
+ RSS_ALG_NONE = 0x00,
+ RSS_ALG_PORT = 0x01,
+ RSS_ALG_IP = 0x02,
+ RSS_ALG_TCP_IP = 0x03,
+ RSS_ALG_UDP_IP = 0x04,
+ RSS_ALG_SCTP_IP = 0x05,
+ RSS_ALG_GRE_IP = 0x06,
+ RSS_ALG_ROCE = 0x07,
+};
+
+/* Completion queue entry types */
+enum cqe_type {
+ CQE_TYPE_INVALID = 0x0,
+ CQE_TYPE_RX = 0x2,
+ CQE_TYPE_RX_SPLIT = 0x3,
+ CQE_TYPE_RX_TCP = 0x4,
+ CQE_TYPE_SEND = 0x8,
+ CQE_TYPE_SEND_PTP = 0x9,
+};
+
+enum cqe_rx_tcp_status {
+ CQE_RX_STATUS_VALID_TCP_CNXT = 0x00,
+ CQE_RX_STATUS_INVALID_TCP_CNXT = 0x0F,
+};
+
+enum cqe_send_status {
+ CQE_SEND_STATUS_GOOD = 0x00,
+ CQE_SEND_STATUS_DESC_FAULT = 0x01,
+ CQE_SEND_STATUS_HDR_CONS_ERR = 0x11,
+ CQE_SEND_STATUS_SUBDESC_ERR = 0x12,
+ CQE_SEND_STATUS_IMM_SIZE_OFLOW = 0x80,
+ CQE_SEND_STATUS_CRC_SEQ_ERR = 0x81,
+ CQE_SEND_STATUS_DATA_SEQ_ERR = 0x82,
+ CQE_SEND_STATUS_MEM_SEQ_ERR = 0x83,
+ CQE_SEND_STATUS_LOCK_VIOL = 0x84,
+ CQE_SEND_STATUS_LOCK_UFLOW = 0x85,
+ CQE_SEND_STATUS_DATA_FAULT = 0x86,
+ CQE_SEND_STATUS_TSTMP_CONFLICT = 0x87,
+ CQE_SEND_STATUS_TSTMP_TIMEOUT = 0x88,
+ CQE_SEND_STATUS_MEM_FAULT = 0x89,
+ CQE_SEND_STATUS_CSUM_OVERLAP = 0x8A,
+ CQE_SEND_STATUS_CSUM_OVERFLOW = 0x8B,
+};
+
+enum cqe_rx_tcp_end_reason {
+ CQE_RX_TCP_END_FIN_FLAG_DET = 0,
+ CQE_RX_TCP_END_INVALID_FLAG = 1,
+ CQE_RX_TCP_END_TIMEOUT = 2,
+ CQE_RX_TCP_END_OUT_OF_SEQ = 3,
+ CQE_RX_TCP_END_PKT_ERR = 4,
+ CQE_RX_TCP_END_QS_DISABLED = 0x0F,
+};
+
+/* Packet protocol level error enumeration */
+enum cqe_rx_err_level {
+ CQE_RX_ERRLVL_RE = 0x0,
+ CQE_RX_ERRLVL_L2 = 0x1,
+ CQE_RX_ERRLVL_L3 = 0x2,
+ CQE_RX_ERRLVL_L4 = 0x3,
+};
+
+/* Packet protocol level error type enumeration */
+enum cqe_rx_err_opcode {
+ CQE_RX_ERR_RE_NONE = 0x0,
+ CQE_RX_ERR_RE_PARTIAL = 0x1,
+ CQE_RX_ERR_RE_JABBER = 0x2,
+ CQE_RX_ERR_RE_FCS = 0x7,
+ CQE_RX_ERR_RE_TERMINATE = 0x9,
+ CQE_RX_ERR_RE_RX_CTL = 0xb,
+ CQE_RX_ERR_PREL2_ERR = 0x1f,
+ CQE_RX_ERR_L2_FRAGMENT = 0x20,
+ CQE_RX_ERR_L2_OVERRUN = 0x21,
+ CQE_RX_ERR_L2_PFCS = 0x22,
+ CQE_RX_ERR_L2_PUNY = 0x23,
+ CQE_RX_ERR_L2_MAL = 0x24,
+ CQE_RX_ERR_L2_OVERSIZE = 0x25,
+ CQE_RX_ERR_L2_UNDERSIZE = 0x26,
+ CQE_RX_ERR_L2_LENMISM = 0x27,
+ CQE_RX_ERR_L2_PCLP = 0x28,
+ CQE_RX_ERR_IP_NOT = 0x41,
+ CQE_RX_ERR_IP_CHK = 0x42,
+ CQE_RX_ERR_IP_MAL = 0x43,
+ CQE_RX_ERR_IP_MALD = 0x44,
+ CQE_RX_ERR_IP_HOP = 0x45,
+ CQE_RX_ERR_L3_ICRC = 0x46,
+ CQE_RX_ERR_L3_PCLP = 0x47,
+ CQE_RX_ERR_L4_MAL = 0x61,
+ CQE_RX_ERR_L4_CHK = 0x62,
+ CQE_RX_ERR_UDP_LEN = 0x63,
+ CQE_RX_ERR_L4_PORT = 0x64,
+ CQE_RX_ERR_TCP_FLAG = 0x65,
+ CQE_RX_ERR_TCP_OFFSET = 0x66,
+ CQE_RX_ERR_L4_PCLP = 0x67,
+ CQE_RX_ERR_RBDR_TRUNC = 0x70,
+};
+
+struct cqe_rx_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t cqe_type:4; /* W0 */
+ uint64_t stdn_fault:1;
+ uint64_t rsvd0:1;
+ uint64_t rq_qs:7;
+ uint64_t rq_idx:3;
+ uint64_t rsvd1:12;
+ uint64_t rss_alg:4;
+ uint64_t rsvd2:4;
+ uint64_t rb_cnt:4;
+ uint64_t vlan_found:1;
+ uint64_t vlan_stripped:1;
+ uint64_t vlan2_found:1;
+ uint64_t vlan2_stripped:1;
+ uint64_t l4_type:4;
+ uint64_t l3_type:4;
+ uint64_t l2_present:1;
+ uint64_t err_level:3;
+ uint64_t err_opcode:8;
+
+ uint64_t pkt_len:16; /* W1 */
+ uint64_t l2_ptr:8;
+ uint64_t l3_ptr:8;
+ uint64_t l4_ptr:8;
+ uint64_t cq_pkt_len:8;
+ uint64_t align_pad:3;
+ uint64_t rsvd3:1;
+ uint64_t chan:12;
+
+ uint64_t rss_tag:32; /* W2 */
+ uint64_t vlan_tci:16;
+ uint64_t vlan_ptr:8;
+ uint64_t vlan2_ptr:8;
+
+ uint64_t rb3_sz:16; /* W3 */
+ uint64_t rb2_sz:16;
+ uint64_t rb1_sz:16;
+ uint64_t rb0_sz:16;
+
+ uint64_t rb7_sz:16; /* W4 */
+ uint64_t rb6_sz:16;
+ uint64_t rb5_sz:16;
+ uint64_t rb4_sz:16;
+
+ uint64_t rb11_sz:16; /* W5 */
+ uint64_t rb10_sz:16;
+ uint64_t rb9_sz:16;
+ uint64_t rb8_sz:16;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t err_opcode:8;
+ uint64_t err_level:3;
+ uint64_t l2_present:1;
+ uint64_t l3_type:4;
+ uint64_t l4_type:4;
+ uint64_t vlan2_stripped:1;
+ uint64_t vlan2_found:1;
+ uint64_t vlan_stripped:1;
+ uint64_t vlan_found:1;
+ uint64_t rb_cnt:4;
+ uint64_t rsvd2:4;
+ uint64_t rss_alg:4;
+ uint64_t rsvd1:12;
+ uint64_t rq_idx:3;
+ uint64_t rq_qs:7;
+ uint64_t rsvd0:1;
+ uint64_t stdn_fault:1;
+ uint64_t cqe_type:4; /* W0 */
+ uint64_t chan:12;
+ uint64_t rsvd3:1;
+ uint64_t align_pad:3;
+ uint64_t cq_pkt_len:8;
+ uint64_t l4_ptr:8;
+ uint64_t l3_ptr:8;
+ uint64_t l2_ptr:8;
+ uint64_t pkt_len:16; /* W1 */
+ uint64_t vlan2_ptr:8;
+ uint64_t vlan_ptr:8;
+ uint64_t vlan_tci:16;
+ uint64_t rss_tag:32; /* W2 */
+ uint64_t rb0_sz:16;
+ uint64_t rb1_sz:16;
+ uint64_t rb2_sz:16;
+ uint64_t rb3_sz:16; /* W3 */
+ uint64_t rb4_sz:16;
+ uint64_t rb5_sz:16;
+ uint64_t rb6_sz:16;
+ uint64_t rb7_sz:16; /* W4 */
+ uint64_t rb8_sz:16;
+ uint64_t rb9_sz:16;
+ uint64_t rb10_sz:16;
+ uint64_t rb11_sz:16; /* W5 */
+#endif
+ uint64_t rb0_ptr:64;
+ uint64_t rb1_ptr:64;
+ uint64_t rb2_ptr:64;
+ uint64_t rb3_ptr:64;
+ uint64_t rb4_ptr:64;
+ uint64_t rb5_ptr:64;
+ uint64_t rb6_ptr:64;
+ uint64_t rb7_ptr:64;
+ uint64_t rb8_ptr:64;
+ uint64_t rb9_ptr:64;
+ uint64_t rb10_ptr:64;
+ uint64_t rb11_ptr:64;
+};
+
+struct cqe_rx_tcp_err_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t cqe_type:4; /* W0 */
+ uint64_t rsvd0:60;
+
+ uint64_t rsvd1:4; /* W1 */
+ uint64_t partial_first:1;
+ uint64_t rsvd2:27;
+ uint64_t rbdr_bytes:8;
+ uint64_t rsvd3:24;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t rsvd0:60;
+ uint64_t cqe_type:4;
+
+ uint64_t rsvd3:24;
+ uint64_t rbdr_bytes:8;
+ uint64_t rsvd2:27;
+ uint64_t partial_first:1;
+ uint64_t rsvd1:4;
+#endif
+};
+
+struct cqe_rx_tcp_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t cqe_type:4; /* W0 */
+ uint64_t rsvd0:52;
+ uint64_t cq_tcp_status:8;
+
+ uint64_t rsvd1:32; /* W1 */
+ uint64_t tcp_cntx_bytes:8;
+ uint64_t rsvd2:8;
+ uint64_t tcp_err_bytes:16;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t cq_tcp_status:8;
+ uint64_t rsvd0:52;
+ uint64_t cqe_type:4; /* W0 */
+
+ uint64_t tcp_err_bytes:16;
+ uint64_t rsvd2:8;
+ uint64_t tcp_cntx_bytes:8;
+ uint64_t rsvd1:32; /* W1 */
+#endif
+};
+
+struct cqe_send_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t cqe_type:4; /* W0 */
+ uint64_t rsvd0:4;
+ uint64_t sqe_ptr:16;
+ uint64_t rsvd1:4;
+ uint64_t rsvd2:10;
+ uint64_t sq_qs:7;
+ uint64_t sq_idx:3;
+ uint64_t rsvd3:8;
+ uint64_t send_status:8;
+
+ uint64_t ptp_timestamp:64; /* W1 */
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t send_status:8;
+ uint64_t rsvd3:8;
+ uint64_t sq_idx:3;
+ uint64_t sq_qs:7;
+ uint64_t rsvd2:10;
+ uint64_t rsvd1:4;
+ uint64_t sqe_ptr:16;
+ uint64_t rsvd0:4;
+ uint64_t cqe_type:4; /* W0 */
+
+ uint64_t ptp_timestamp:64; /* W1 */
+#endif
+};
+
+union cq_desc_t {
+ uint64_t u[64];
+ struct cqe_send_t snd_hdr;
+ struct cqe_rx_t rx_hdr;
+ struct cqe_rx_tcp_t rx_tcp_hdr;
+ struct cqe_rx_tcp_err_t rx_tcp_err_hdr;
+};
+
+struct rbdr_entry_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t rsvd0:15;
+ uint64_t buf_addr:42;
+ uint64_t cache_align:7;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t cache_align:7;
+ uint64_t buf_addr:42;
+ uint64_t rsvd0:15;
+#endif
+};
+
+/* TCP reassembly context */
+struct rbe_tcp_cnxt_t {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t tcp_pkt_cnt:12;
+ uint64_t rsvd1:4;
+ uint64_t align_hdr_bytes:4;
+ uint64_t align_ptr_bytes:4;
+ uint64_t ptr_bytes:16;
+ uint64_t rsvd2:24;
+ uint64_t cqe_type:4;
+ uint64_t rsvd0:54;
+ uint64_t tcp_end_reason:2;
+ uint64_t tcp_status:4;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t tcp_status:4;
+ uint64_t tcp_end_reason:2;
+ uint64_t rsvd0:54;
+ uint64_t cqe_type:4;
+ uint64_t rsvd2:24;
+ uint64_t ptr_bytes:16;
+ uint64_t align_ptr_bytes:4;
+ uint64_t align_hdr_bytes:4;
+ uint64_t rsvd1:4;
+ uint64_t tcp_pkt_cnt:12;
+#endif
+};
+
+/* Always Big endian */
+struct rx_hdr_t {
+ uint64_t opaque:32;
+ uint64_t rss_flow:8;
+ uint64_t skip_length:6;
+ uint64_t disable_rss:1;
+ uint64_t disable_tcp_reassembly:1;
+ uint64_t nodrop:1;
+ uint64_t dest_alg:2;
+ uint64_t rsvd0:2;
+ uint64_t dest_rq:11;
+};
+
+enum send_l4_csum_type {
+ SEND_L4_CSUM_DISABLE = 0x00,
+ SEND_L4_CSUM_UDP = 0x01,
+ SEND_L4_CSUM_TCP = 0x02,
+ SEND_L4_CSUM_SCTP = 0x03,
+};
+
+enum send_crc_alg {
+ SEND_CRCALG_CRC32 = 0x00,
+ SEND_CRCALG_CRC32C = 0x01,
+ SEND_CRCALG_ICRC = 0x02,
+};
+
+enum send_load_type {
+ SEND_LD_TYPE_LDD = 0x00,
+ SEND_LD_TYPE_LDT = 0x01,
+ SEND_LD_TYPE_LDWB = 0x02,
+};
+
+enum send_mem_alg_type {
+ SEND_MEMALG_SET = 0x00,
+ SEND_MEMALG_ADD = 0x08,
+ SEND_MEMALG_SUB = 0x09,
+ SEND_MEMALG_ADDLEN = 0x0A,
+ SEND_MEMALG_SUBLEN = 0x0B,
+};
+
+enum send_mem_dsz_type {
+ SEND_MEMDSZ_B64 = 0x00,
+ SEND_MEMDSZ_B32 = 0x01,
+ SEND_MEMDSZ_B8 = 0x03,
+};
+
+enum sq_subdesc_type {
+ SQ_DESC_TYPE_INVALID = 0x00,
+ SQ_DESC_TYPE_HEADER = 0x01,
+ SQ_DESC_TYPE_CRC = 0x02,
+ SQ_DESC_TYPE_IMMEDIATE = 0x03,
+ SQ_DESC_TYPE_GATHER = 0x04,
+ SQ_DESC_TYPE_MEMORY = 0x05,
+};
+
+struct sq_crc_subdesc {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t rsvd1:32;
+ uint64_t crc_ival:32;
+ uint64_t subdesc_type:4;
+ uint64_t crc_alg:2;
+ uint64_t rsvd0:10;
+ uint64_t crc_insert_pos:16;
+ uint64_t hdr_start:16;
+ uint64_t crc_len:16;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t crc_len:16;
+ uint64_t hdr_start:16;
+ uint64_t crc_insert_pos:16;
+ uint64_t rsvd0:10;
+ uint64_t crc_alg:2;
+ uint64_t subdesc_type:4;
+ uint64_t crc_ival:32;
+ uint64_t rsvd1:32;
+#endif
+};
+
+struct sq_gather_subdesc {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t subdesc_type:4; /* W0 */
+ uint64_t ld_type:2;
+ uint64_t rsvd0:42;
+ uint64_t size:16;
+
+ uint64_t rsvd1:15; /* W1 */
+ uint64_t addr:49;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t size:16;
+ uint64_t rsvd0:42;
+ uint64_t ld_type:2;
+ uint64_t subdesc_type:4; /* W0 */
+
+ uint64_t addr:49;
+ uint64_t rsvd1:15; /* W1 */
+#endif
+};
+
+/* SQ immediate subdescriptor */
+struct sq_imm_subdesc {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t subdesc_type:4; /* W0 */
+ uint64_t rsvd0:46;
+ uint64_t len:14;
+
+ uint64_t data:64; /* W1 */
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t len:14;
+ uint64_t rsvd0:46;
+ uint64_t subdesc_type:4; /* W0 */
+
+ uint64_t data:64; /* W1 */
+#endif
+};
+
+struct sq_mem_subdesc {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t subdesc_type:4; /* W0 */
+ uint64_t mem_alg:4;
+ uint64_t mem_dsz:2;
+ uint64_t wmem:1;
+ uint64_t rsvd0:21;
+ uint64_t offset:32;
+
+ uint64_t rsvd1:15; /* W1 */
+ uint64_t addr:49;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t offset:32;
+ uint64_t rsvd0:21;
+ uint64_t wmem:1;
+ uint64_t mem_dsz:2;
+ uint64_t mem_alg:4;
+ uint64_t subdesc_type:4; /* W0 */
+
+ uint64_t addr:49;
+ uint64_t rsvd1:15; /* W1 */
+#endif
+};
+
+struct sq_hdr_subdesc {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t subdesc_type:4;
+ uint64_t tso:1;
+ uint64_t post_cqe:1; /* Post CQE on no error also */
+ uint64_t dont_send:1;
+ uint64_t tstmp:1;
+ uint64_t subdesc_cnt:8;
+ uint64_t csum_l4:2;
+ uint64_t csum_l3:1;
+ uint64_t rsvd0:5;
+ uint64_t l4_offset:8;
+ uint64_t l3_offset:8;
+ uint64_t rsvd1:4;
+ uint64_t tot_len:20; /* W0 */
+
+ uint64_t tso_sdc_cont:8;
+ uint64_t tso_sdc_first:8;
+ uint64_t tso_l4_offset:8;
+ uint64_t tso_flags_last:12;
+ uint64_t tso_flags_first:12;
+ uint64_t rsvd2:2;
+ uint64_t tso_max_paysize:14; /* W1 */
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t tot_len:20;
+ uint64_t rsvd1:4;
+ uint64_t l3_offset:8;
+ uint64_t l4_offset:8;
+ uint64_t rsvd0:5;
+ uint64_t csum_l3:1;
+ uint64_t csum_l4:2;
+ uint64_t subdesc_cnt:8;
+ uint64_t tstmp:1;
+ uint64_t dont_send:1;
+ uint64_t post_cqe:1; /* Post CQE on no error also */
+ uint64_t tso:1;
+ uint64_t subdesc_type:4; /* W0 */
+
+ uint64_t tso_max_paysize:14;
+ uint64_t rsvd2:2;
+ uint64_t tso_flags_first:12;
+ uint64_t tso_flags_last:12;
+ uint64_t tso_l4_offset:8;
+ uint64_t tso_sdc_first:8;
+ uint64_t tso_sdc_cont:8; /* W1 */
+#endif
+};
+
+/* Queue config register formats */
+struct rq_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_2_63:62;
+ uint64_t ena:1;
+ uint64_t tcp_ena:1;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t tcp_ena:1;
+ uint64_t ena:1;
+ uint64_t reserved_2_63:62;
+#endif
+};
+
+struct cq_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_43_63:21;
+ uint64_t ena:1;
+ uint64_t reset:1;
+ uint64_t caching:1;
+ uint64_t reserved_35_39:5;
+ uint64_t qsize:3;
+ uint64_t reserved_25_31:7;
+ uint64_t avg_con:9;
+ uint64_t reserved_0_15:16;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t reserved_0_15:16;
+ uint64_t avg_con:9;
+ uint64_t reserved_25_31:7;
+ uint64_t qsize:3;
+ uint64_t reserved_35_39:5;
+ uint64_t caching:1;
+ uint64_t reset:1;
+ uint64_t ena:1;
+ uint64_t reserved_43_63:21;
+#endif
+};
+
+struct sq_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_20_63:44;
+ uint64_t ena:1;
+ uint64_t reserved_18_18:1;
+ uint64_t reset:1;
+ uint64_t ldwb:1;
+ uint64_t reserved_11_15:5;
+ uint64_t qsize:3;
+ uint64_t reserved_3_7:5;
+ uint64_t tstmp_bgx_intf:3;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t tstmp_bgx_intf:3;
+ uint64_t reserved_3_7:5;
+ uint64_t qsize:3;
+ uint64_t reserved_11_15:5;
+ uint64_t ldwb:1;
+ uint64_t reset:1;
+ uint64_t reserved_18_18:1;
+ uint64_t ena:1;
+ uint64_t reserved_20_63:44;
+#endif
+};
+
+struct rbdr_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_45_63:19;
+ uint64_t ena:1;
+ uint64_t reset:1;
+ uint64_t ldwb:1;
+ uint64_t reserved_36_41:6;
+ uint64_t qsize:4;
+ uint64_t reserved_25_31:7;
+ uint64_t avg_con:9;
+ uint64_t reserved_12_15:4;
+ uint64_t lines:12;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t lines:12;
+ uint64_t reserved_12_15:4;
+ uint64_t avg_con:9;
+ uint64_t reserved_25_31:7;
+ uint64_t qsize:4;
+ uint64_t reserved_36_41:6;
+ uint64_t ldwb:1;
+ uint64_t reset:1;
+ uint64_t ena: 1;
+ uint64_t reserved_45_63:19;
+#endif
+};
+
+struct qs_cfg {
+#if defined(__BIG_ENDIAN_BITFIELD)
+ uint64_t reserved_32_63:32;
+ uint64_t ena:1;
+ uint64_t reserved_27_30:4;
+ uint64_t sq_ins_ena:1;
+ uint64_t sq_ins_pos:6;
+ uint64_t lock_ena:1;
+ uint64_t lock_viol_cqe_ena:1;
+ uint64_t send_tstmp_ena:1;
+ uint64_t be:1;
+ uint64_t reserved_7_15:9;
+ uint64_t vnic:7;
+#elif defined(__LITTLE_ENDIAN_BITFIELD)
+ uint64_t vnic:7;
+ uint64_t reserved_7_15:9;
+ uint64_t be:1;
+ uint64_t send_tstmp_ena:1;
+ uint64_t lock_viol_cqe_ena:1;
+ uint64_t lock_ena:1;
+ uint64_t sq_ins_pos:6;
+ uint64_t sq_ins_ena:1;
+ uint64_t reserved_27_30:4;
+ uint64_t ena:1;
+ uint64_t reserved_32_63:32;
+#endif
+};
+
+#endif /* Q_STRUCT_H */
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
new file mode 100644
index 000000000000..b8886f9e0f46
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -0,0 +1,386 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+
+#include "nic_reg.h"
+#include "nic.h"
+#include "thunder_bgx.h"
+
+#define DRV_NAME "thunder-BGX"
+#define DRV_VERSION "1.0"
+
+struct lmac {
+ int dmac;
+ bool link_up;
+} lmac;
+
+struct bgx {
+ uint8_t bgx_id;
+ struct lmac lmac[MAX_LMAC_PER_BGX];
+ int lmac_count;
+ uint64_t reg_base;
+ struct pci_dev *pdev;
+ /* MSI-X */
+ bool msix_enabled;
+ uint16_t num_vec;
+ struct msix_entry msix_entries[BGX_MSIX_VECTORS];
+ char irq_name[BGX_MSIX_VECTORS][20];
+ uint8_t irq_allocated[BGX_MSIX_VECTORS];
+} bgx;
+
+struct bgx *bgx_vnic[MAX_BGX_THUNDER];
+
+/* Supported devices */
+static const struct pci_device_id bgx_id_table[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVICE_ID_THUNDER_BGX) },
+ { 0, } /* end of table */
+};
+
+MODULE_AUTHOR("Cavium Inc");
+MODULE_DESCRIPTION("Cavium Thunder BGX/MAC Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_VERSION(DRV_VERSION);
+MODULE_DEVICE_TABLE(pci, bgx_id_table);
+
+/* Register read/write APIs */
+static uint64_t bgx_reg_read(struct bgx *bgx, uint8_t lmac, uint64_t offset)
+{
+ uint64_t addr = bgx->reg_base + (lmac << 20) + offset;
+
+ return readq_relaxed((void *)addr);
+}
+
+static void bgx_reg_write(struct bgx *bgx, uint8_t lmac,
+ uint64_t offset, uint64_t val)
+{
+ uint64_t addr = bgx->reg_base + (lmac << 20) + offset;
+
+ writeq_relaxed(val, (void *)addr);
+}
+
+/* Return number of BGX present in HW */
+void bgx_get_count(int node, int *bgx_count)
+{
+ int i;
+ struct bgx *bgx;
+
+ *bgx_count = 0;
+ for (i = 0; i < MAX_BGX_PER_CN88XX; i++) {
+ bgx = bgx_vnic[(node * MAX_BGX_PER_CN88XX) + i];
+ if (bgx)
+ *bgx_count |= (1 << i);
+ }
+}
+EXPORT_SYMBOL(bgx_get_count);
+
+/* Return number of LMAC configured for this BGX */
+int bgx_get_lmac_count(int node, int bgx_idx)
+{
+ struct bgx *bgx;
+
+ bgx = bgx_vnic[(node * MAX_BGX_PER_CN88XX) + bgx_idx];
+ if (bgx)
+ return bgx->lmac_count;
+
+ return 0;
+}
+EXPORT_SYMBOL(bgx_get_lmac_count);
+
+/* Link Interrupts APIs */
+static void bgx_enable_link_intr(struct bgx *bgx, uint8_t lmac)
+{
+ uint64_t val;
+
+ val = bgx_reg_read(bgx, lmac, BGX_SPUX_INT_ENA_W1S);
+ val |= (LMAC_INTR_LINK_UP | LMAC_INTR_LINK_DOWN);
+ bgx_reg_write(bgx, lmac, BGX_SPUX_INT_ENA_W1S, val);
+}
+
+static irqreturn_t bgx_lmac_intr_handler (int irq, void *bgx_irq)
+{
+ struct bgx *bgx = (struct bgx *)bgx_irq;
+ u64 result;
+ uint8_t lmac;
+
+ for (lmac = 0; lmac < bgx->lmac_count; lmac++) {
+ result = bgx_reg_read(bgx, lmac, BGX_SPUX_INT);
+ if (result & LMAC_INTR_LINK_UP) {
+ bgx_reg_write(bgx, lmac, BGX_SPUX_INT,
+ LMAC_INTR_LINK_UP);
+ dev_info(&bgx->pdev->dev, "lmac %d link is Up\n", lmac);
+ bgx->lmac[lmac].link_up = true;
+ }
+
+ if (result & LMAC_INTR_LINK_DOWN) {
+ bgx_reg_write(bgx, lmac, BGX_SPUX_INT,
+ LMAC_INTR_LINK_DOWN);
+ dev_info(&bgx->pdev->dev,
+ "lmac %d link is Down\n", lmac);
+ bgx->lmac[lmac].link_up = false;
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+static int bgx_enable_msix(struct bgx *bgx)
+{
+ int vec, ret;
+
+ bgx->num_vec = BGX_MSIX_VECTORS;
+ for (vec = 0; vec < bgx->num_vec; vec++)
+ bgx->msix_entries[vec].entry = vec;
+
+ ret = pci_enable_msix(bgx->pdev, bgx->msix_entries, bgx->num_vec);
+ if (ret) {
+ dev_err(&bgx->pdev->dev ,
+ "Request for #%d msix vectors failed\n", bgx->num_vec);
+ return 0;
+ }
+ bgx->msix_enabled = 1;
+ return 1;
+}
+
+static void bgx_disable_msix(struct bgx *bgx)
+{
+ if (bgx->msix_enabled) {
+ pci_disable_msix(bgx->pdev);
+ bgx->msix_enabled = 0;
+ bgx->num_vec = 0;
+ }
+}
+
+static int bgx_register_interrupts(struct bgx *bgx, uint8_t lmac)
+{
+ int irq, ret = 0;
+
+ /* Register only link interrupts now */
+ irq = SPUX_INT + (lmac * BGX_LMAC_VEC_OFFSET);
+ sprintf(bgx->irq_name[irq], "LMAC%d", lmac);
+ ret = request_irq(bgx->msix_entries[irq].vector,
+ bgx_lmac_intr_handler, 0, bgx->irq_name[irq], bgx);
+ if (ret)
+ goto fail;
+ else
+ bgx->irq_allocated[irq] = 1;
+
+ /* Enable link interrupt */
+ bgx_enable_link_intr(bgx, lmac);
+ return 0;
+
+fail:
+ dev_err(&bgx->pdev->dev, "Request irq failed\n");
+ for (irq = 0; irq < bgx->num_vec; irq++) {
+ if (bgx->irq_allocated[irq])
+ free_irq(bgx->msix_entries[irq].vector, bgx);
+ bgx->irq_allocated[irq] = 0;
+ }
+ return 1;
+}
+
+static void bgx_unregister_interrupts(struct bgx *bgx)
+{
+ int irq;
+ /* Free registered interrupts */
+ for (irq = 0; irq < bgx->num_vec; irq++) {
+ if (bgx->irq_allocated[irq])
+ free_irq(bgx->msix_entries[irq].vector, bgx);
+ bgx->irq_allocated[irq] = 0;
+ }
+ /* Disable MSI-X */
+ bgx_disable_msix(bgx);
+}
+
+static void bgx_flush_dmac_addrs(struct bgx *bgx, uint64_t lmac)
+{
+ uint64_t dmac = 0x00;
+ uint64_t offset, addr;
+
+ while (bgx->lmac[lmac].dmac > 0) {
+ offset = ((bgx->lmac[lmac].dmac - 1) * sizeof(dmac)) +
+ (lmac * MAX_DMAC_PER_LMAC * sizeof(dmac));
+ addr = bgx->reg_base + BGX_CMR_RX_DMACX_CAM + offset;
+ writeq_relaxed(dmac, (void *)addr);
+ bgx->lmac[lmac].dmac--;
+ }
+}
+
+void bgx_add_dmac_addr(uint64_t dmac, int node, int bgx_idx, int lmac)
+{
+ uint64_t offset, addr;
+ struct bgx *bgx;
+
+ bgx_idx += node * MAX_BGX_PER_CN88XX;
+ bgx = bgx_vnic[bgx_idx];
+
+ if (!bgx) {
+ pr_err("BGX%d not yet initialized, ignoring DMAC addition\n",
+ bgx_idx);
+ return;
+ }
+
+ dmac = dmac | (1ULL << 48) | ((uint64_t)lmac << 49); /* Enable DMAC */
+ if (bgx->lmac[lmac].dmac == MAX_DMAC_PER_LMAC) {
+ pr_err("Max DMAC filters for LMAC%d reached, ignoring DMAC addition\n",
+ lmac);
+ return;
+ }
+
+ if (bgx->lmac[lmac].dmac == MAX_DMAC_PER_LMAC_TNS_BYPASS_MODE)
+ bgx->lmac[lmac].dmac = 1;
+
+ offset = (bgx->lmac[lmac].dmac * sizeof(dmac)) +
+ (lmac * MAX_DMAC_PER_LMAC * sizeof(dmac));
+ addr = bgx->reg_base + BGX_CMR_RX_DMACX_CAM + offset;
+ writeq_relaxed(dmac, (void *)addr);
+ bgx->lmac[lmac].dmac++;
+
+ bgx_reg_write(bgx, lmac, BGX_CMRX_RX_DMAC_CTL,
+ (CAM_ACCEPT << 3) | (MCAST_MODE_CAM_FILTER << 1)
+ | (BCAST_ACCEPT << 0));
+}
+EXPORT_SYMBOL(bgx_add_dmac_addr);
+
+void bgx_lmac_enable(struct bgx *bgx, int8_t lmac)
+{
+ uint64_t dmac_bcast = (1ULL << 48) - 1;
+
+ bgx_reg_write(bgx, lmac, BGX_CMRX_CFG,
+ (1 << 15) | (1 << 14) | (1 << 13));
+
+ /* Register interrupts */
+ bgx_register_interrupts(bgx, lmac);
+
+ /* Add broadcast MAC into all LMAC's DMAC filters */
+ for (lmac = 0; lmac < bgx->lmac_count; lmac++)
+ bgx_add_dmac_addr(dmac_bcast, 0, bgx->bgx_id, lmac);
+}
+
+void bgx_lmac_disable(struct bgx *bgx, uint8_t lmac)
+{
+ bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, 0x00);
+ bgx_flush_dmac_addrs(bgx, lmac);
+ bgx_unregister_interrupts(bgx);
+}
+
+static void bgx_init_hw(struct bgx *bgx)
+{
+ int lmac;
+ uint64_t enable = 0;
+
+ /* Enable all LMACs */
+ /* Enable LMAC, Pkt Rx enable, Pkt Tx enable */
+ enable = (1 << 15) | (1 << 14) | (1 << 13);
+ for (lmac = 0; lmac < MAX_LMAC_PER_BGX; lmac++) {
+ bgx_reg_write(bgx, lmac, BGX_CMRX_CFG, enable);
+ bgx->lmac_count++;
+ }
+}
+
+static int bgx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+ struct device *dev = &pdev->dev;
+ struct bgx *bgx;
+ int err;
+ uint8_t lmac = 0;
+
+ bgx = kzalloc(sizeof(*bgx), GFP_KERNEL);
+ bgx->pdev = pdev;
+
+ pci_set_drvdata(pdev, bgx);
+
+ err = pci_enable_device(pdev);
+ if (err) {
+ dev_err(dev, "Failed to enable PCI device\n");
+ goto exit;
+ }
+
+ err = pci_request_regions(pdev, DRV_NAME);
+ if (err) {
+ dev_err(dev, "PCI request regions failed 0x%x\n", err);
+ goto err_disable_device;
+ }
+
+ /* MAP configuration registers */
+ bgx->reg_base = (uint64_t)pci_ioremap_bar(pdev, PCI_CFG_REG_BAR_NUM);
+ if (!bgx->reg_base) {
+ dev_err(dev, "BGX: Cannot map CSR memory space, aborting\n");
+ err = -ENOMEM;
+ goto err_release_regions;
+ }
+ bgx->bgx_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24) & 1;
+ bgx->bgx_id += NODE_ID(pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM))
+ * MAX_BGX_PER_CN88XX;
+ bgx_vnic[bgx->bgx_id] = bgx;
+
+ /* Initialize BGX hardware */
+ bgx_init_hw(bgx);
+ /* Enable MSI-X */
+ if (!bgx_enable_msix(bgx))
+ return 1;
+ /* Enable all LMACs */
+ for (lmac = 0; lmac < bgx->lmac_count; lmac++)
+ bgx_lmac_enable(bgx, lmac);
+ goto exit;
+
+ if (bgx->reg_base)
+ iounmap((void *)bgx->reg_base);
+err_release_regions:
+ pci_release_regions(pdev);
+err_disable_device:
+ pci_disable_device(pdev);
+exit:
+ return err;
+}
+
+static void bgx_remove(struct pci_dev *pdev)
+{
+ struct bgx *bgx = pci_get_drvdata(pdev);
+ uint8_t lmac;
+
+ if (!bgx)
+ return;
+ /* Disable all LMACs */
+ for (lmac = 0; lmac < 4; lmac++)
+ bgx_lmac_disable(bgx, lmac);
+
+ pci_set_drvdata(pdev, NULL);
+
+ if (bgx->reg_base)
+ iounmap((void *)bgx->reg_base);
+
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+ kfree(bgx);
+}
+
+static struct pci_driver bgx_driver = {
+ .name = DRV_NAME,
+ .id_table = bgx_id_table,
+ .probe = bgx_probe,
+ .remove = bgx_remove,
+};
+
+static int __init bgx_init_module(void)
+{
+ pr_info("%s, ver %s\n", DRV_NAME, DRV_VERSION);
+
+ return pci_register_driver(&bgx_driver);
+}
+
+static void __exit bgx_cleanup_module(void)
+{
+ pci_unregister_driver(&bgx_driver);
+}
+
+module_init(bgx_init_module);
+module_exit(bgx_cleanup_module);
+
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
new file mode 100644
index 000000000000..de6503148d25
--- /dev/null
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014 Cavium, Inc.
+ *
+ * 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.
+ */
+
+#ifndef THUNDER_BGX_H
+#define THUNDER_BGX_H
+
+#define MAX_BGX_THUNDER 8 /* Max 4 nodes, 2 per node */
+#define MAX_BGX_PER_CN88XX 2
+#define MAX_LMAC_PER_BGX 4
+#define MAX_BGX_CHANS_PER_LMAC 16
+#define MAX_DMAC_PER_LMAC 8
+
+#define MAX_DMAC_PER_LMAC_TNS_BYPASS_MODE 2
+
+#define MAX_LMAC (MAX_BGX_PER_CN88XX * MAX_LMAC_PER_BGX)
+
+#define NODE_ID_MASK 0x300000000000
+#define NODE_ID(x) ((x & NODE_ID_MASK) >> 44)
+
+/* Registers */
+#define BGX_CMRX_CFG 0x00
+#define BGX_CMRX_RX_ID_MAP 0x60
+#define BGX_CMRX_RX_DMAC_CTL 0x0E8
+#define BGX_CMR_RX_DMACX_CAM 0x200
+#define BGX_CMR_RX_LMACS 0x468
+#define BGX_CMR_TX_LMACS 0x1000
+
+#define BGX_SPUX_STATUS1 0x10008
+#define BGX_SPUX_STATUS2 0x10020
+#define BGX_SPUX_INT 0x10220 /* +(0..3) << 20 */
+#define BGX_SPUX_INT_W1S 0x10228
+#define BGX_SPUX_INT_ENA_W1C 0x10230
+#define BGX_SPUX_INT_ENA_W1S 0x10238
+
+#define BGX_MSIX_VEC_0_29_ADDR 0x400000 /* +(0..29) << 4 */
+#define BGX_MSIX_VEC_0_29_CTL 0x400008
+#define BGX_MSIX_PBA_0 0x4F0000
+
+/* MSI-X interrupts */
+#define BGX_MSIX_VECTORS 30
+#define BGX_LMAC_VEC_OFFSET 7
+#define BGX_MSIX_VEC_SHIFT 4
+
+#define CMRX_INT 0
+#define SPUX_INT 1
+#define SMUX_RX_INT 2
+#define SMUX_TX_INT 3
+#define GMPX_PCS_INT 4
+#define GMPX_GMI_RX_INT 5
+#define GMPX_GMI_TX_INT 6
+#define CMR_MEM_INT 28
+#define SPU_MEM_INT 29
+
+#define LMAC_INTR_LINK_UP (1 << 0)
+#define LMAC_INTR_LINK_DOWN (1 << 1)
+
+/* RX_DMAC_CTL configuration*/
+enum MCAST_MODE {
+ MCAST_MODE_REJECT,
+ MCAST_MODE_ACCEPT,
+ MCAST_MODE_CAM_FILTER,
+ RSVD
+};
+
+#define BCAST_ACCEPT 1
+#define CAM_ACCEPT 1
+
+void bgx_add_dmac_addr(uint64_t dmac, int node, int bgx_idx, int lmac);
+void bgx_get_count(int node, int *bgx_count);
+int bgx_get_lmac_count(int node, int bgx);
+
+#endif /* THUNDER_BGX_H */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 1fa99a301817..80bd3336691e 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2324,6 +2324,8 @@
#define PCI_DEVICE_ID_ALTIMA_AC9100 0x03ea
#define PCI_DEVICE_ID_ALTIMA_AC1003 0x03eb

+#define PCI_VENDOR_ID_CAVIUM 0x177d
+
#define PCI_VENDOR_ID_BELKIN 0x1799
#define PCI_DEVICE_ID_BELKIN_F5D7010V7 0x701f

--
2.1.1

2014-10-31 02:45:29

by Stephen Hemminger

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On Thu, 30 Oct 2014 17:54:34 +0100
Robert Richter <[email protected]> wrote:

> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index 1fa99a301817..80bd3336691e 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -2324,6 +2324,8 @@
> #define PCI_DEVICE_ID_ALTIMA_AC9100 0x03ea
> #define PCI_DEVICE_ID_ALTIMA_AC1003 0x03eb
>
> +#define PCI_VENDOR_ID_CAVIUM 0x177d

I don't think PCI folks want this updated with every id anymore.

2014-10-31 02:55:14

by Stephen Hemminger

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On Thu, 30 Oct 2014 17:54:34 +0100
Robert Richter <[email protected]> wrote:

> +#ifdef VNIC_RSS_SUPPORT
> +static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
> +module_param(rss_config, int, S_IRUGO);
> +MODULE_PARM_DESC(rss_config,
> + "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
> +#endif

This should managed be via ethtool ETHTOOL_GRXFH rather than a module parameter.

2014-10-31 16:31:55

by Robert Richter

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On 30.10.14 19:45:13, Stephen Hemminger wrote:
> On Thu, 30 Oct 2014 17:54:34 +0100
> Robert Richter <[email protected]> wrote:
>
> > diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> > index 1fa99a301817..80bd3336691e 100644
> > --- a/include/linux/pci_ids.h
> > +++ b/include/linux/pci_ids.h
> > @@ -2324,6 +2324,8 @@
> > #define PCI_DEVICE_ID_ALTIMA_AC9100 0x03ea
> > #define PCI_DEVICE_ID_ALTIMA_AC1003 0x03eb
> >
> > +#define PCI_VENDOR_ID_CAVIUM 0x177d
>
> I don't think PCI folks want this updated with every id anymore.

This is just the vendor id, the device id is part of the driver.

Since there will be multiple drivers I put the vendor id here.

-Robert

2014-10-31 17:14:14

by Sunil Kovvuri

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On Fri, Oct 31, 2014 at 8:24 AM, Stephen Hemminger
<[email protected]> wrote:
> On Thu, 30 Oct 2014 17:54:34 +0100
> Robert Richter <[email protected]> wrote:
>
>> +#ifdef VNIC_RSS_SUPPORT
>> +static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
>> +module_param(rss_config, int, S_IRUGO);
>> +MODULE_PARM_DESC(rss_config,
>> + "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
>> +#endif
>
> This should managed be via ethtool ETHTOOL_GRXFH rather than a module parameter.
Thanks, i will add setting hash options via ETHTOOL_SRXFH as well.
The idea here is to have a choice of hash while module load (through
module params) and if it needs to be changed runtime then
via Ethtool.

Sunil.

2014-11-03 18:17:10

by Stephen Hemminger

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On Fri, 31 Oct 2014 22:44:11 +0530
Sunil Kovvuri <[email protected]> wrote:

> On Fri, Oct 31, 2014 at 8:24 AM, Stephen Hemminger
> <[email protected]> wrote:
> > On Thu, 30 Oct 2014 17:54:34 +0100
> > Robert Richter <[email protected]> wrote:
> >
> >> +#ifdef VNIC_RSS_SUPPORT
> >> +static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
> >> +module_param(rss_config, int, S_IRUGO);
> >> +MODULE_PARM_DESC(rss_config,
> >> + "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
> >> +#endif
> >
> > This should managed be via ethtool ETHTOOL_GRXFH rather than a module parameter.
> Thanks, i will add setting hash options via ETHTOOL_SRXFH as well.
> The idea here is to have a choice of hash while module load (through
> module params) and if it needs to be changed runtime then
> via Ethtool.
>
> Sunil.

Network developers do not like vendor unique module parameters.
Anything device specific doesn't work in a generic distro environment.

2014-11-03 18:34:03

by Robert Richter

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On 03.11.14 10:16:51, Stephen Hemminger wrote:
> On Fri, 31 Oct 2014 22:44:11 +0530
> Sunil Kovvuri <[email protected]> wrote:
>
> > On Fri, Oct 31, 2014 at 8:24 AM, Stephen Hemminger
> > <[email protected]> wrote:
> > > On Thu, 30 Oct 2014 17:54:34 +0100
> > > Robert Richter <[email protected]> wrote:
> > >
> > >> +#ifdef VNIC_RSS_SUPPORT
> > >> +static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
> > >> +module_param(rss_config, int, S_IRUGO);
> > >> +MODULE_PARM_DESC(rss_config,
> > >> + "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
> > >> +#endif
> > >
> > > This should managed be via ethtool ETHTOOL_GRXFH rather than a module parameter.
> > Thanks, i will add setting hash options via ETHTOOL_SRXFH as well.
> > The idea here is to have a choice of hash while module load (through
> > module params) and if it needs to be changed runtime then
> > via Ethtool.
> >
> > Sunil.
>
> Network developers do not like vendor unique module parameters.
> Anything device specific doesn't work in a generic distro environment.

Do you accept unique module parameters in parallel to ethtool support
or should this be removed?

-Robert

2014-11-03 20:25:42

by Stephen Hemminger

Subject: Re: [PATCH] VNIC: Adding support for Cavium ThunderX network controller

On Mon, 3 Nov 2014 19:33:45 +0100
Robert Richter <[email protected]> wrote:

> On 03.11.14 10:16:51, Stephen Hemminger wrote:
> > On Fri, 31 Oct 2014 22:44:11 +0530
> > Sunil Kovvuri <[email protected]> wrote:
> >
> > > On Fri, Oct 31, 2014 at 8:24 AM, Stephen Hemminger
> > > <[email protected]> wrote:
> > > > On Thu, 30 Oct 2014 17:54:34 +0100
> > > > Robert Richter <[email protected]> wrote:
> > > >
> > > >> +#ifdef VNIC_RSS_SUPPORT
> > > >> +static int rss_config = RSS_IP_HASH_ENA | RSS_TCP_HASH_ENA | RSS_UDP_HASH_ENA;
> > > >> +module_param(rss_config, int, S_IRUGO);
> > > >> +MODULE_PARM_DESC(rss_config,
> > > >> + "RSS hash config [bits 8:0] (Bit0:L2 extended, 1:IP, 2:TCP, 3:TCP SYN, 4:UDP, 5:L4 extended, 6:ROCE 7:L3 bi-directional, 8:L4 bi-directional)");
> > > >> +#endif
> > > >
> > > > This should managed be via ethtool ETHTOOL_GRXFH rather than a module parameter.
> > > Thanks, i will add setting hash options via ETHTOOL_SRXFH as well.
> > > The idea here is to have a choice of hash while module load (through
> > > module params) and if it needs to be changed runtime then
> > > via Ethtool.
> > >
> > > Sunil.
> >
> > Network developers do not like vendor unique module parameters.
> > Anything device specific doesn't work in a generic distro environment.
>
> Do you accept unique module parameters in parallel to ethtool support
> or should this be removed?

If there is ethtool support the module parameters are not needed.
Unneeded code is to be avoided.