Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 357 insertions, 0 deletions

diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.h b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h
new file mode 100644
index 000000000..025626a61
--- /dev/null
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.h
@@ -0,0 +1,357 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Marvell Octeon EP (EndPoint) Ethernet Driver
+ *
+ * Copyright (C) 2020 Marvell.
+ *
+ */
+
+#ifndef _OCTEP_MAIN_H_
+#define _OCTEP_MAIN_H_
+
+#include "octep_tx.h"
+#include "octep_rx.h"
+#include "octep_ctrl_mbox.h"
+
+#define OCTEP_DRV_NAME		"octeon_ep"
+#define OCTEP_DRV_STRING	"Marvell Octeon EndPoint NIC Driver"
+
+#define  OCTEP_PCIID_CN93_PF  0xB200177d
+#define  OCTEP_PCIID_CN93_VF  0xB203177d
+
+#define  OCTEP_PCI_DEVICE_ID_CN93_PF 0xB200
+#define  OCTEP_PCI_DEVICE_ID_CN93_VF 0xB203
+
+#define  OCTEP_MAX_QUEUES   63
+#define  OCTEP_MAX_IQ       OCTEP_MAX_QUEUES
+#define  OCTEP_MAX_OQ       OCTEP_MAX_QUEUES
+#define  OCTEP_MAX_VF       64
+
+#define OCTEP_MAX_MSIX_VECTORS OCTEP_MAX_OQ
+
+/* Flags to disable and enable Interrupts */
+#define  OCTEP_INPUT_INTR    (1)
+#define  OCTEP_OUTPUT_INTR   (2)
+#define  OCTEP_MBOX_INTR     (4)
+#define  OCTEP_ALL_INTR      0xff
+
+#define  OCTEP_IQ_INTR_RESEND_BIT  59
+#define  OCTEP_OQ_INTR_RESEND_BIT  59
+
+#define  OCTEP_MMIO_REGIONS     3
+/* PCI address space mapping information.
+ * Each of the 3 address spaces given by BAR0, BAR2 and BAR4 of
+ * Octeon gets mapped to different physical address spaces in
+ * the kernel.
+ */
+struct octep_mmio {
+	/* The physical address to which the PCI address space is mapped. */
+	u8 __iomem *hw_addr;
+
+	/* Flag indicating the mapping was successful. */
+	int mapped;
+};
+
+struct octep_pci_win_regs {
+	u8 __iomem *pci_win_wr_addr;
+	u8 __iomem *pci_win_rd_addr;
+	u8 __iomem *pci_win_wr_data;
+	u8 __iomem *pci_win_rd_data;
+};
+
+struct octep_hw_ops {
+	void (*setup_iq_regs)(struct octep_device *oct, int q);
+	void (*setup_oq_regs)(struct octep_device *oct, int q);
+	void (*setup_mbox_regs)(struct octep_device *oct, int mbox);
+
+	irqreturn_t (*non_ioq_intr_handler)(void *ioq_vector);
+	irqreturn_t (*ioq_intr_handler)(void *ioq_vector);
+	int (*soft_reset)(struct octep_device *oct);
+	void (*reinit_regs)(struct octep_device *oct);
+	u32  (*update_iq_read_idx)(struct octep_iq *iq);
+
+	void (*enable_interrupts)(struct octep_device *oct);
+	void (*disable_interrupts)(struct octep_device *oct);
+
+	void (*enable_io_queues)(struct octep_device *oct);
+	void (*disable_io_queues)(struct octep_device *oct);
+	void (*enable_iq)(struct octep_device *oct, int q);
+	void (*disable_iq)(struct octep_device *oct, int q);
+	void (*enable_oq)(struct octep_device *oct, int q);
+	void (*disable_oq)(struct octep_device *oct, int q);
+	void (*reset_io_queues)(struct octep_device *oct);
+	void (*dump_registers)(struct octep_device *oct);
+};
+
+/* Octeon mailbox data */
+struct octep_mbox_data {
+	u32 cmd;
+	u32 total_len;
+	u32 recv_len;
+	u32 rsvd;
+	u64 *data;
+};
+
+/* Octeon device mailbox */
+struct octep_mbox {
+	/* A spinlock to protect access to this q_mbox. */
+	spinlock_t lock;
+
+	u32 q_no;
+	u32 state;
+
+	/* SLI_MAC_PF_MBOX_INT for PF, SLI_PKT_MBOX_INT for VF. */
+	u8 __iomem *mbox_int_reg;
+
+	/* SLI_PKT_PF_VF_MBOX_SIG(0) for PF,
+	 * SLI_PKT_PF_VF_MBOX_SIG(1) for VF.
+	 */
+	u8 __iomem *mbox_write_reg;
+
+	/* SLI_PKT_PF_VF_MBOX_SIG(1) for PF,
+	 * SLI_PKT_PF_VF_MBOX_SIG(0) for VF.
+	 */
+	u8 __iomem *mbox_read_reg;
+
+	struct octep_mbox_data mbox_data;
+};
+
+/* Tx/Rx queue vector per interrupt. */
+struct octep_ioq_vector {
+	char name[OCTEP_MSIX_NAME_SIZE];
+	struct napi_struct napi;
+	struct octep_device *octep_dev;
+	struct octep_iq *iq;
+	struct octep_oq *oq;
+	cpumask_t affinity_mask;
+};
+
+/* Octeon hardware/firmware offload capability flags. */
+#define OCTEP_CAP_TX_CHECKSUM BIT(0)
+#define OCTEP_CAP_RX_CHECKSUM BIT(1)
+#define OCTEP_CAP_TSO         BIT(2)
+
+/* Link modes */
+enum octep_link_mode_bit_indices {
+	OCTEP_LINK_MODE_10GBASE_T    = 0,
+	OCTEP_LINK_MODE_10GBASE_R,
+	OCTEP_LINK_MODE_10GBASE_CR,
+	OCTEP_LINK_MODE_10GBASE_KR,
+	OCTEP_LINK_MODE_10GBASE_LR,
+	OCTEP_LINK_MODE_10GBASE_SR,
+	OCTEP_LINK_MODE_25GBASE_CR,
+	OCTEP_LINK_MODE_25GBASE_KR,
+	OCTEP_LINK_MODE_25GBASE_SR,
+	OCTEP_LINK_MODE_40GBASE_CR4,
+	OCTEP_LINK_MODE_40GBASE_KR4,
+	OCTEP_LINK_MODE_40GBASE_LR4,
+	OCTEP_LINK_MODE_40GBASE_SR4,
+	OCTEP_LINK_MODE_50GBASE_CR2,
+	OCTEP_LINK_MODE_50GBASE_KR2,
+	OCTEP_LINK_MODE_50GBASE_SR2,
+	OCTEP_LINK_MODE_50GBASE_CR,
+	OCTEP_LINK_MODE_50GBASE_KR,
+	OCTEP_LINK_MODE_50GBASE_LR,
+	OCTEP_LINK_MODE_50GBASE_SR,
+	OCTEP_LINK_MODE_100GBASE_CR4,
+	OCTEP_LINK_MODE_100GBASE_KR4,
+	OCTEP_LINK_MODE_100GBASE_LR4,
+	OCTEP_LINK_MODE_100GBASE_SR4,
+	OCTEP_LINK_MODE_NBITS
+};
+
+/* Hardware interface link state information. */
+struct octep_iface_link_info {
+	/* Bitmap of Supported link speeds/modes. */
+	u64 supported_modes;
+
+	/* Bitmap of Advertised link speeds/modes. */
+	u64 advertised_modes;
+
+	/* Negotiated link speed in Mbps. */
+	u32 speed;
+
+	/* MTU */
+	u16 mtu;
+
+	/* Autonegotation state. */
+#define OCTEP_LINK_MODE_AUTONEG_SUPPORTED   BIT(0)
+#define OCTEP_LINK_MODE_AUTONEG_ADVERTISED  BIT(1)
+	u8 autoneg;
+
+	/* Pause frames setting. */
+#define OCTEP_LINK_MODE_PAUSE_SUPPORTED   BIT(0)
+#define OCTEP_LINK_MODE_PAUSE_ADVERTISED  BIT(1)
+	u8 pause;
+
+	/* Admin state of the link (ifconfig <iface> up/down */
+	u8  admin_up;
+
+	/* Operational state of the link: physical link is up down */
+	u8  oper_up;
+};
+
+/* The Octeon device specific private data structure.
+ * Each Octeon device has this structure to represent all its components.
+ */
+struct octep_device {
+	struct octep_config *conf;
+
+	/* Octeon Chip type. */
+	u16 chip_id;
+	u16 rev_id;
+
+	/* Device capabilities enabled */
+	u64 caps_enabled;
+	/* Device capabilities supported */
+	u64 caps_supported;
+
+	/* Pointer to basic Linux device */
+	struct device *dev;
+	/* Linux PCI device pointer */
+	struct pci_dev *pdev;
+	/* Netdev corresponding to the Octeon device */
+	struct net_device *netdev;
+
+	/* memory mapped io range */
+	struct octep_mmio mmio[OCTEP_MMIO_REGIONS];
+
+	/* MAC address */
+	u8 mac_addr[ETH_ALEN];
+
+	/* Tx queues (IQ: Instruction Queue) */
+	u16 num_iqs;
+	/* pkind value to be used in every Tx hardware descriptor */
+	u8 pkind;
+	/* Pointers to Octeon Tx queues */
+	struct octep_iq *iq[OCTEP_MAX_IQ];
+
+	/* Rx queues (OQ: Output Queue) */
+	u16 num_oqs;
+	/* Pointers to Octeon Rx queues */
+	struct octep_oq *oq[OCTEP_MAX_OQ];
+
+	/* Hardware port number of the PCIe interface */
+	u16 pcie_port;
+
+	/* PCI Window registers to access some hardware CSRs */
+	struct octep_pci_win_regs pci_win_regs;
+	/* Hardware operations */
+	struct octep_hw_ops hw_ops;
+
+	/* IRQ info */
+	u16 num_irqs;
+	u16 num_non_ioq_irqs;
+	char *non_ioq_irq_names;
+	struct msix_entry *msix_entries;
+	/* IOq information of it's corresponding MSI-X interrupt. */
+	struct octep_ioq_vector *ioq_vector[OCTEP_MAX_QUEUES];
+
+	/* Hardware Interface Tx statistics */
+	struct octep_iface_tx_stats iface_tx_stats;
+	/* Hardware Interface Rx statistics */
+	struct octep_iface_rx_stats iface_rx_stats;
+
+	/* Hardware Interface Link info like supported modes, aneg support */
+	struct octep_iface_link_info link_info;
+
+	/* Mailbox to talk to VFs */
+	struct octep_mbox *mbox[OCTEP_MAX_VF];
+
+	/* Work entry to handle Tx timeout */
+	struct work_struct tx_timeout_task;
+
+	/* control mbox over pf */
+	struct octep_ctrl_mbox ctrl_mbox;
+
+	/* offset for iface stats */
+	u32 ctrl_mbox_ifstats_offset;
+
+	/* Work entry to handle ctrl mbox interrupt */
+	struct work_struct ctrl_mbox_task;
+
+};
+
+static inline u16 OCTEP_MAJOR_REV(struct octep_device *oct)
+{
+	u16 rev = (oct->rev_id & 0xC) >> 2;
+
+	return (rev == 0) ? 1 : rev;
+}
+
+static inline u16 OCTEP_MINOR_REV(struct octep_device *oct)
+{
+	return (oct->rev_id & 0x3);
+}
+
+/* Octeon CSR read/write access APIs */
+#define octep_write_csr(octep_dev, reg_off, value) \
+	writel(value, (octep_dev)->mmio[0].hw_addr + (reg_off))
+
+#define octep_write_csr64(octep_dev, reg_off, val64) \
+	writeq(val64, (octep_dev)->mmio[0].hw_addr + (reg_off))
+
+#define octep_read_csr(octep_dev, reg_off)         \
+	readl((octep_dev)->mmio[0].hw_addr + (reg_off))
+
+#define octep_read_csr64(octep_dev, reg_off)         \
+	readq((octep_dev)->mmio[0].hw_addr + (reg_off))
+
+/* Read windowed register.
+ * @param  oct   -  pointer to the Octeon device.
+ * @param  addr  -  Address of the register to read.
+ *
+ * This routine is called to read from the indirectly accessed
+ * Octeon registers that are visible through a PCI BAR0 mapped window
+ * register.
+ * @return  - 64 bit value read from the register.
+ */
+static inline u64
+OCTEP_PCI_WIN_READ(struct octep_device *oct, u64 addr)
+{
+	u64 val64;
+
+	addr |= 1ull << 53; /* read 8 bytes */
+	writeq(addr, oct->pci_win_regs.pci_win_rd_addr);
+	val64 = readq(oct->pci_win_regs.pci_win_rd_data);
+
+	dev_dbg(&oct->pdev->dev,
+		"%s: reg: 0x%016llx val: 0x%016llx\n", __func__, addr, val64);
+
+	return val64;
+}
+
+/* Write windowed register.
+ * @param  oct  -  pointer to the Octeon device.
+ * @param  addr -  Address of the register to write
+ * @param  val  -  Value to write
+ *
+ * This routine is called to write to the indirectly accessed
+ * Octeon registers that are visible through a PCI BAR0 mapped window
+ * register.
+ * @return   Nothing.
+ */
+static inline void
+OCTEP_PCI_WIN_WRITE(struct octep_device *oct, u64 addr, u64 val)
+{
+	writeq(addr, oct->pci_win_regs.pci_win_wr_addr);
+	writeq(val, oct->pci_win_regs.pci_win_wr_data);
+
+	dev_dbg(&oct->pdev->dev,
+		"%s: reg: 0x%016llx val: 0x%016llx\n", __func__, addr, val);
+}
+
+extern struct workqueue_struct *octep_wq;
+
+int octep_device_setup(struct octep_device *oct);
+int octep_setup_iqs(struct octep_device *oct);
+void octep_free_iqs(struct octep_device *oct);
+void octep_clean_iqs(struct octep_device *oct);
+int octep_setup_oqs(struct octep_device *oct);
+void octep_free_oqs(struct octep_device *oct);
+void octep_oq_dbell_init(struct octep_device *oct);
+void octep_device_setup_cn93_pf(struct octep_device *oct);
+int octep_iq_process_completions(struct octep_iq *iq, u16 budget);
+int octep_oq_process_rx(struct octep_oq *oq, int budget);
+void octep_set_ethtool_ops(struct net_device *netdev);
+
+#endif /* _OCTEP_MAIN_H_ */