drivers/vdpa/octeon_ep/octep_vdpa.h

   1 /* SPDX-License-Identifier: GPL-2.0-only
   2  * Copyright (C) 2024 Marvell.
   3  */
   4 #ifndef __OCTEP_VDPA_H__
   5 #define __OCTEP_VDPA_H__
   6
   7 #include <linux/pci.h>
   8 #include <linux/pci_regs.h>
   9 #include <linux/vdpa.h>
  10 #include <linux/virtio_pci_modern.h>
  11 #include <uapi/linux/virtio_net.h>
  12 #include <uapi/linux/virtio_blk.h>
  13 #include <uapi/linux/virtio_config.h>
  14 #include <uapi/linux/virtio_pci.h>
  15 #include <uapi/linux/vdpa.h>
  16
  17 #define OCTEP_VDPA_DEVID_CN106K_PF 0xb900
  18 #define OCTEP_VDPA_DEVID_CN106K_VF 0xb903
  19 #define OCTEP_VDPA_DEVID_CN105K_PF 0xba00
  20 #define OCTEP_VDPA_DEVID_CN105K_VF 0xba03
  21 #define OCTEP_VDPA_DEVID_CN103K_PF 0xbd00
  22 #define OCTEP_VDPA_DEVID_CN103K_VF 0xbd03
  23
  24 #define OCTEP_HW_MBOX_BAR 0
  25 #define OCTEP_HW_CAPS_BAR 4
  26
  27 #define OCTEP_DEV_READY_SIGNATURE 0xBABABABA
  28
  29 #define OCTEP_EPF_RINFO(x) (0x000209f0 | ((x) << 25))
  30 #define OCTEP_VF_MBOX_DATA(x) (0x00010210 | ((x) << 17))
  31 #define OCTEP_PF_MBOX_DATA(x) (0x00022000 | ((x) << 4))
  32
  33 #define OCTEP_EPF_RINFO_RPVF(val) (((val) >> 32) & 0xF)
  34 #define OCTEP_EPF_RINFO_NVFS(val) (((val) >> 48) & 0x7F)
  35
  36 #define OCTEP_FW_READY_SIGNATURE0  0xFEEDFEED
  37 #define OCTEP_FW_READY_SIGNATURE1  0x3355ffaa
  38
  39 enum octep_vdpa_dev_status {
  40         OCTEP_VDPA_DEV_STATUS_INVALID,
  41         OCTEP_VDPA_DEV_STATUS_ALLOC,
  42         OCTEP_VDPA_DEV_STATUS_WAIT_FOR_BAR_INIT,
  43         OCTEP_VDPA_DEV_STATUS_INIT,
  44         OCTEP_VDPA_DEV_STATUS_READY,
  45         OCTEP_VDPA_DEV_STATUS_UNINIT
  46 };
  47
  48 struct octep_vring_info {
  49         struct vdpa_callback cb;
  50         void __iomem *notify_addr;
  51         u32 __iomem *cb_notify_addr;
  52         phys_addr_t notify_pa;
  53         char msix_name[256];
  54 };
  55
  56 struct octep_hw {
  57         struct pci_dev *pdev;
  58         u8 __iomem *base[PCI_STD_NUM_BARS];
  59         struct virtio_pci_common_cfg __iomem *common_cfg;
  60         u8 __iomem *dev_cfg;
  61         u8 __iomem *isr;
  62         void __iomem *notify_base;
  63         phys_addr_t notify_base_pa;
  64         u32 notify_off_multiplier;
  65         u8 notify_bar;
  66         struct octep_vring_info *vqs;
  67         struct vdpa_callback config_cb;
  68         u64 features;
  69         u16 nr_vring;
  70         u32 config_size;
  71         int irq;
  72 };
  73
  74 u8 octep_hw_get_status(struct octep_hw *oct_hw);
  75 void octep_hw_set_status(struct octep_hw *dev, uint8_t status);
  76 void octep_hw_reset(struct octep_hw *oct_hw);
  77 void octep_write_queue_select(struct octep_hw *oct_hw, u16 queue_id);
  78 void octep_notify_queue(struct octep_hw *oct_hw, u16 qid);
  79 void octep_read_dev_config(struct octep_hw *oct_hw, u64 offset, void *dst, int length);
  80 int octep_set_vq_address(struct octep_hw *oct_hw, u16 qid, u64 desc_area, u64 driver_area,
  81                          u64 device_area);
  82 void octep_set_vq_num(struct octep_hw *oct_hw, u16 qid, u32 num);
  83 void octep_set_vq_ready(struct octep_hw *oct_hw, u16 qid, bool ready);
  84 bool octep_get_vq_ready(struct octep_hw *oct_hw, u16 qid);
  85 int octep_set_vq_state(struct octep_hw *oct_hw, u16 qid, const struct vdpa_vq_state *state);
  86 int octep_get_vq_state(struct octep_hw *oct_hw, u16 qid, struct vdpa_vq_state *state);
  87 u16 octep_get_vq_size(struct octep_hw *oct_hw);
  88 int octep_hw_caps_read(struct octep_hw *oct_hw, struct pci_dev *pdev);
  89 u64 octep_hw_get_dev_features(struct octep_hw *oct_hw);
  90 void octep_hw_set_drv_features(struct octep_hw *oct_hw, u64 features);
  91 u64 octep_hw_get_drv_features(struct octep_hw *oct_hw);
  92 int octep_verify_features(u64 features);
  93
  94 #endif /* __OCTEP_VDPA_H__ */