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path: root/drivers/net/ethernet/freescale/enetc/enetc.h
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Diffstat (limited to 'drivers/net/ethernet/freescale/enetc/enetc.h')
-rw-r--r--drivers/net/ethernet/freescale/enetc/enetc.h230
1 files changed, 230 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/enetc/enetc.h b/drivers/net/ethernet/freescale/enetc/enetc.h
new file mode 100644
index 000000000000..b274135c5103
--- /dev/null
+++ b/drivers/net/ethernet/freescale/enetc/enetc.h
@@ -0,0 +1,230 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
+/* Copyright 2017-2019 NXP */
+
+#include <linux/timer.h>
+#include <linux/pci.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/dma-mapping.h>
+#include <linux/skbuff.h>
+#include <linux/ethtool.h>
+#include <linux/if_vlan.h>
+#include <linux/phy.h>
+
+#include "enetc_hw.h"
+
+#define ENETC_MAC_MAXFRM_SIZE 9600
+#define ENETC_MAX_MTU (ENETC_MAC_MAXFRM_SIZE - \
+ (ETH_FCS_LEN + ETH_HLEN + VLAN_HLEN))
+
+struct enetc_tx_swbd {
+ struct sk_buff *skb;
+ dma_addr_t dma;
+ u16 len;
+ u16 is_dma_page;
+};
+
+#define ENETC_RX_MAXFRM_SIZE ENETC_MAC_MAXFRM_SIZE
+#define ENETC_RXB_TRUESIZE 2048 /* PAGE_SIZE >> 1 */
+#define ENETC_RXB_PAD NET_SKB_PAD /* add extra space if needed */
+#define ENETC_RXB_DMA_SIZE \
+ (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - ENETC_RXB_PAD)
+
+struct enetc_rx_swbd {
+ dma_addr_t dma;
+ struct page *page;
+ u16 page_offset;
+};
+
+struct enetc_ring_stats {
+ unsigned int packets;
+ unsigned int bytes;
+ unsigned int rx_alloc_errs;
+};
+
+#define ENETC_BDR_DEFAULT_SIZE 1024
+#define ENETC_DEFAULT_TX_WORK 256
+
+struct enetc_bdr {
+ struct device *dev; /* for DMA mapping */
+ struct net_device *ndev;
+ void *bd_base; /* points to Rx or Tx BD ring */
+ union {
+ void __iomem *tpir;
+ void __iomem *rcir;
+ };
+ u16 index;
+ int bd_count; /* # of BDs */
+ int next_to_use;
+ int next_to_clean;
+ union {
+ struct enetc_tx_swbd *tx_swbd;
+ struct enetc_rx_swbd *rx_swbd;
+ };
+ union {
+ void __iomem *tcir; /* Tx */
+ int next_to_alloc; /* Rx */
+ };
+ void __iomem *idr; /* Interrupt Detect Register pointer */
+
+ struct enetc_ring_stats stats;
+
+ dma_addr_t bd_dma_base;
+} ____cacheline_aligned_in_smp;
+
+static inline void enetc_bdr_idx_inc(struct enetc_bdr *bdr, int *i)
+{
+ if (unlikely(++*i == bdr->bd_count))
+ *i = 0;
+}
+
+static inline int enetc_bd_unused(struct enetc_bdr *bdr)
+{
+ if (bdr->next_to_clean > bdr->next_to_use)
+ return bdr->next_to_clean - bdr->next_to_use - 1;
+
+ return bdr->bd_count + bdr->next_to_clean - bdr->next_to_use - 1;
+}
+
+/* Control BD ring */
+#define ENETC_CBDR_DEFAULT_SIZE 64
+struct enetc_cbdr {
+ void *bd_base; /* points to Rx or Tx BD ring */
+ void __iomem *pir;
+ void __iomem *cir;
+
+ int bd_count; /* # of BDs */
+ int next_to_use;
+ int next_to_clean;
+
+ dma_addr_t bd_dma_base;
+};
+
+#define ENETC_TXBD(BDR, i) (&(((union enetc_tx_bd *)((BDR).bd_base))[i]))
+#define ENETC_RXBD(BDR, i) (&(((union enetc_rx_bd *)((BDR).bd_base))[i]))
+
+struct enetc_msg_swbd {
+ void *vaddr;
+ dma_addr_t dma;
+ int size;
+};
+
+#define ENETC_REV1 0x1
+enum enetc_errata {
+ ENETC_ERR_TXCSUM = BIT(0),
+ ENETC_ERR_VLAN_ISOL = BIT(1),
+ ENETC_ERR_UCMCSWP = BIT(2),
+};
+
+/* PCI IEP device data */
+struct enetc_si {
+ struct pci_dev *pdev;
+ struct enetc_hw hw;
+ enum enetc_errata errata;
+
+ struct net_device *ndev; /* back ref. */
+
+ struct enetc_cbdr cbd_ring;
+
+ int num_rx_rings; /* how many rings are available in the SI */
+ int num_tx_rings;
+ int num_fs_entries;
+ int num_rss; /* number of RSS buckets */
+ unsigned short pad;
+};
+
+#define ENETC_SI_ALIGN 32
+
+static inline void *enetc_si_priv(const struct enetc_si *si)
+{
+ return (char *)si + ALIGN(sizeof(struct enetc_si), ENETC_SI_ALIGN);
+}
+
+static inline bool enetc_si_is_pf(struct enetc_si *si)
+{
+ return !!(si->hw.port);
+}
+
+#define ENETC_MAX_NUM_TXQS 8
+#define ENETC_INT_NAME_MAX (IFNAMSIZ + 8)
+
+struct enetc_int_vector {
+ void __iomem *rbier;
+ void __iomem *tbier_base;
+ unsigned long tx_rings_map;
+ int count_tx_rings;
+ struct napi_struct napi;
+ char name[ENETC_INT_NAME_MAX];
+
+ struct enetc_bdr rx_ring ____cacheline_aligned_in_smp;
+ struct enetc_bdr tx_ring[0];
+};
+
+struct enetc_cls_rule {
+ struct ethtool_rx_flow_spec fs;
+ int used;
+};
+
+#define ENETC_MAX_BDR_INT 2 /* fixed to max # of available cpus */
+
+struct enetc_ndev_priv {
+ struct net_device *ndev;
+ struct device *dev; /* dma-mapping device */
+ struct enetc_si *si;
+
+ int bdr_int_num; /* number of Rx/Tx ring interrupts */
+ struct enetc_int_vector *int_vector[ENETC_MAX_BDR_INT];
+ u16 num_rx_rings, num_tx_rings;
+ u16 rx_bd_count, tx_bd_count;
+
+ u16 msg_enable;
+
+ struct enetc_bdr *tx_ring[16];
+ struct enetc_bdr *rx_ring[16];
+
+ struct enetc_cls_rule *cls_rules;
+
+ struct device_node *phy_node;
+ phy_interface_t if_mode;
+};
+
+/* Messaging */
+
+/* VF-PF set primary MAC address message format */
+struct enetc_msg_cmd_set_primary_mac {
+ struct enetc_msg_cmd_header header;
+ struct sockaddr mac;
+};
+
+#define ENETC_CBD(R, i) (&(((struct enetc_cbd *)((R).bd_base))[i]))
+
+#define ENETC_CBDR_TIMEOUT 1000 /* usecs */
+
+/* SI common */
+int enetc_pci_probe(struct pci_dev *pdev, const char *name, int sizeof_priv);
+void enetc_pci_remove(struct pci_dev *pdev);
+int enetc_alloc_msix(struct enetc_ndev_priv *priv);
+void enetc_free_msix(struct enetc_ndev_priv *priv);
+void enetc_get_si_caps(struct enetc_si *si);
+void enetc_init_si_rings_params(struct enetc_ndev_priv *priv);
+int enetc_alloc_si_resources(struct enetc_ndev_priv *priv);
+void enetc_free_si_resources(struct enetc_ndev_priv *priv);
+
+int enetc_open(struct net_device *ndev);
+int enetc_close(struct net_device *ndev);
+netdev_tx_t enetc_xmit(struct sk_buff *skb, struct net_device *ndev);
+struct net_device_stats *enetc_get_stats(struct net_device *ndev);
+int enetc_set_features(struct net_device *ndev,
+ netdev_features_t features);
+/* ethtool */
+void enetc_set_ethtool_ops(struct net_device *ndev);
+
+/* control buffer descriptor ring (CBDR) */
+int enetc_set_mac_flt_entry(struct enetc_si *si, int index,
+ char *mac_addr, int si_map);
+int enetc_clear_mac_flt_entry(struct enetc_si *si, int index);
+int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse,
+ int index);
+void enetc_set_rss_key(struct enetc_hw *hw, const u8 *bytes);
+int enetc_get_rss_table(struct enetc_si *si, u32 *table, int count);
+int enetc_set_rss_table(struct enetc_si *si, const u32 *table, int count);