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23da7763f3
Change-Id: I5d2ba00662d965d742fea0c655dd2845b65f59b9 Signed-off-by: Bhadram Varka <vbhadram@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2161941 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
267 lines
8.1 KiB
C
267 lines
8.1 KiB
C
/*
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* Copyright (c) 2018-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ETHER_LINUX_H
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#define ETHER_LINUX_H
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#include <linux/ptp_clock_kernel.h>
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#include <linux/platform_device.h>
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#include <linux/etherdevice.h>
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#include <linux/net_tstamp.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/of_gpio.h>
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#include <linux/of_mdio.h>
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#include <linux/if_vlan.h>
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#include <linux/thermal.h>
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#include <linux/of_net.h>
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#include <linux/module.h>
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#include <linux/reset.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/tcp.h>
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#include <linux/udp.h>
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#include <linux/of.h>
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#include <linux/ktime.h>
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#include <osi_core.h>
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#include <osi_dma.h>
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#include <mmc.h>
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#include "ioctl.h"
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#define ETHER_MAX_IRQS 4
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#define ETHER_IRQ_MAX_IDX 8
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#define ETHER_IRQ_NAME_SZ 32
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#define ETHER_QUEUE_PRIO_DEFAULT 0U
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#define ETHER_QUEUE_PRIO_MAX 7U
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#define ETHER_QUEUE_PRIO_INVALID 0xFFU
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#define ETHER_DFLT_PTP_CLK 312500000U
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#define EQOS_CONFIG_FAIL -3
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#define EQOS_CONFIG_SUCCESS 0
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#define ETHER_ADDR_REG_CNT_128 128
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#define ETHER_ADDR_REG_CNT_64 64
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#define ETHER_ADDR_REG_CNT_32 32
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#define ETHER_ADDR_REG_CNT_1 1
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#define HW_HASH_TBL_SZ_3 3
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#define HW_HASH_TBL_SZ_2 2
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#define HW_HASH_TBL_SZ_1 1
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#define HW_HASH_TBL_SZ_0 0
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#define ETHER_MAX_HW_MTU 9000U
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#define ETHER_DEFAULT_PLATFORM_MTU 1500U
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/* Map max. 4KB buffer per Tx descriptor */
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#define ETHER_MAX_DATA_LEN_PER_TXD_BUF BIT(12)
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/* Incase of TSO/GSO, Tx ring needs atmost MAX_SKB_FRAGS +
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* one context descriptor +
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* one descriptor for header/linear buffer payload
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*/
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#define TX_DESC_THRESHOLD (MAX_SKB_FRAGS + 2)
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/**
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* ether_avail_txdesc_count - Return count of available tx desc.
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* @tx_ring: Tx ring instance associated with channel number
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*
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* Algorithm: Check the difference between current desc index
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* and the desc. index to be cleaned.
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*
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* Dependencies: MAC needs to be initialized and Tx ring allocated.
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*
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* Protection: None.
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*
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* Return: Number of available descriptors in the given Tx ring.
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*/
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static inline int ether_avail_txdesc_cnt(struct osi_tx_ring *tx_ring)
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{
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return ((tx_ring->clean_idx - tx_ring->cur_tx_idx - 1) &
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(TX_DESC_CNT - 1));
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}
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#ifdef THERMAL_CAL
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/* The DT binding for ethernet device has 5 thermal zones in steps of
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* 35 degress from -40C to 110C. Each zone corresponds to a state.
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*/
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#define ETHER_MAX_THERM_STATE 5UL
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#endif /* THERMAL_CAL */
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/**
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* struct ether_tx_napi - DMA Transmit Channel NAPI
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* @chan: Transmit channel number
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* @pdata: OSD private data
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* @napi: NAPI instance associated with transmit channel
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*/
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struct ether_tx_napi {
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unsigned int chan;
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struct ether_priv_data *pdata;
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struct napi_struct napi;
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};
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/**
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* struct ether_rx_napi - DMA Receive Channel NAPI
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* @chan: Receive channel number
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* @pdata: OSD Private data
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* @napi: NAPI instance associated with receive channel
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*/
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struct ether_rx_napi {
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unsigned int chan;
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struct ether_priv_data *pdata;
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struct napi_struct napi;
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};
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/**
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* struct ether_priv_data - Ethernet driver private data
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* @osi_core: OSI core private data
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* @osi_dma: OSI DMA private data
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* @hwfeat: HW supported feature list
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* @tx_napi: Array of DMA Transmit channel NAPI
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* @rx_napi: Array of DMA Receive channel NAPI
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* @ndev: Network device associated with driver
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* @dev: Base device associated with driver
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* @mac_rst: Reset for the MAC
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* @pllrefe_clk: PLLREFE clock
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* @axi_clk: Clock from AXI
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* @axi_cbb_clk: Clock from AXI CBB
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* @rx_clk: Receive clock (which will be driven from the PHY)
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* @ptp_ref_clk: PTP reference clock from AXI
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* @tx_clk: Transmit clock
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* @phy_node: Pointer to PHY device tree node
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* @mdio_node: Pointer to MDIO device tree node
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* @mii: Pointer to MII bus instance
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* @phydev: Pointer to the PHY device
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* @interface: Interface type assciated with MAC (SGMII/RGMII/...)
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* this information will be provided with phy-mode DT
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* entry
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* @oldlink: Previous detected link
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* @speed: PHY link speed
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* @oldduplex: Previous detected mode
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* @phy_reset: Reset for PHY
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* @rx_irq_alloc_mask: Tx IRQ alloc mask
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* @tx_irq_alloc_mask: Rx IRQ alloc mask
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* @common_irq: Common IRQ number for MAC
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* @tx_irqs: Array of DMA Transmit channel IRQ numbers
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* @rx_irqs: Array of DMA Receive channel IRQ numbers
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* @dma_mask: memory allocation mask
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* @mac_loopback_mode: MAC loopback mode
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* @txq_prio: Array of MTL queue TX priority
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* @hw_feat_cur_state: Current state of features enabled in HW
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* @tcd: Pointer to thermal cooling device which this driver
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* registers with the kernel. Kernel will invoke the
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* callback ops for this cooling device when temperate
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* in thermal zone defined in DT binding for this driver
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* is tripped.
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* @therm_state: Atomic variable to hold the current temperature zone
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* which has triggered.
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* @lock: Spin lock for filter code
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* @ioctl_lock: Spin lock for filter code ioctl path
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* @max_hash_table_size: hash table size; 0, 64,128 or 256
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* @num_mac_addr_regs: max address register count, 2*mac_addr64_sel
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* @last_mc_filter_index: Last Multicast address reg filter index, If 0,
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* no MC address added
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* @last_uc_filter_index: Last Unicast address reg filter index, If 0, no
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* MC and UC address added.
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* @l3_l4_filter: L3_l4 filter enabled 1: enabled
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* @vlan_hash_filtering: vlan hash filter 1: hash, 0: perfect
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* @l2_filtering_mode: l2 filter mode 1: hash 0: perfect
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* @ptp_clock_ops: PTP clock operations structure.
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* @ptp_clock: PTP system clock
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* @ptp_ref_clock_speed: PTP reference clock supported by platform
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* @hwts_tx_en: HW tx time stamping enable
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* @hwts_rx_en: HW rx time stamping enable
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* @max_platform_mtu: Max MTU supported by platform
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*/
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struct ether_priv_data {
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struct osi_core_priv_data *osi_core;
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struct osi_dma_priv_data *osi_dma;
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struct osi_hw_features hw_feat;
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struct ether_tx_napi *tx_napi[OSI_EQOS_MAX_NUM_CHANS];
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struct ether_rx_napi *rx_napi[OSI_EQOS_MAX_NUM_CHANS];
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struct net_device *ndev;
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struct device *dev;
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struct reset_control *mac_rst;
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struct clk *pllrefe_clk;
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struct clk *axi_clk;
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struct clk *axi_cbb_clk;
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struct clk *rx_clk;
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struct clk *ptp_ref_clk;
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struct clk *tx_clk;
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struct device_node *phy_node;
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struct device_node *mdio_node;
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struct mii_bus *mii;
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struct phy_device *phydev;
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int interface;
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unsigned int oldlink;
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int speed;
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int oldduplex;
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int phy_reset;
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unsigned int rx_irq_alloc_mask;
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unsigned int tx_irq_alloc_mask;
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unsigned int common_irq_alloc_mask;
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int common_irq;
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int tx_irqs[ETHER_MAX_IRQS];
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int rx_irqs[ETHER_MAX_IRQS];
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unsigned long long dma_mask;
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netdev_features_t hw_feat_cur_state;
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/* for MAC loopback */
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unsigned int mac_loopback_mode;
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unsigned int txq_prio[OSI_EQOS_MAX_NUM_QUEUES];
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#ifdef THERMAL_CAL
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struct thermal_cooling_device *tcd;
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atomic_t therm_state;
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#endif /* THERMAL_CAL */
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/* for filtering */
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spinlock_t lock;
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spinlock_t rlock;
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/* spin lock for ioctl path */
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spinlock_t ioctl_lock;
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int num_mac_addr_regs;
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int last_mc_filter_index;
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int last_uc_filter_index;
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unsigned int l3_l4_filter;
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unsigned int vlan_hash_filtering;
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unsigned int l2_filtering_mode;
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/* for PTP */
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struct ptp_clock_info ptp_clock_ops;
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struct ptp_clock *ptp_clock;
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unsigned int ptp_ref_clock_speed;
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unsigned int hwts_tx_en;
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unsigned int hwts_rx_en;
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unsigned int max_platform_mtu;
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};
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void ether_set_ethtool_ops(struct net_device *ndev);
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int ether_sysfs_register(struct device *dev);
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void ether_sysfs_unregister(struct device *dev);
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int ether_ptp_init(struct ether_priv_data *pdata);
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void ether_ptp_remove(struct ether_priv_data *pdata);
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int ether_handle_hwtstamp_ioctl(struct ether_priv_data *pdata,
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struct ifreq *ifr);
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#endif /* ETHER_LINUX_H */
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