mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 03:48:59 +00:00
8b6c724cda
This commit introduces a new vDPA driver specifically designed for managing the virtio control plane over the vDPA bus for OCTEON DPU devices. The driver consists of two layers: 1. Octep HW Layer (Octeon Endpoint): Responsible for handling hardware operations and configurations related to the DPU device. 2. Octep Main Layer: Compliant with the vDPA bus framework, this layer implements device operations for the vDPA bus. It handles device probing, bus attachment, vring operations, and other relevant tasks. Signed-off-by: Srujana Challa <schalla@marvell.com> Signed-off-by: Vamsi Attunuru <vattunuru@marvell.com> Signed-off-by: Shijith Thotton <sthotton@marvell.com> Signed-off-by: Nithin Dabilpuram <ndabilpuram@marvell.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20240614144659.1776067-1-schalla@marvell.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
95 lines
3.1 KiB
C
95 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only
|
|
* Copyright (C) 2024 Marvell.
|
|
*/
|
|
#ifndef __OCTEP_VDPA_H__
|
|
#define __OCTEP_VDPA_H__
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/pci_regs.h>
|
|
#include <linux/vdpa.h>
|
|
#include <linux/virtio_pci_modern.h>
|
|
#include <uapi/linux/virtio_net.h>
|
|
#include <uapi/linux/virtio_blk.h>
|
|
#include <uapi/linux/virtio_config.h>
|
|
#include <uapi/linux/virtio_pci.h>
|
|
#include <uapi/linux/vdpa.h>
|
|
|
|
#define OCTEP_VDPA_DEVID_CN106K_PF 0xb900
|
|
#define OCTEP_VDPA_DEVID_CN106K_VF 0xb903
|
|
#define OCTEP_VDPA_DEVID_CN105K_PF 0xba00
|
|
#define OCTEP_VDPA_DEVID_CN105K_VF 0xba03
|
|
#define OCTEP_VDPA_DEVID_CN103K_PF 0xbd00
|
|
#define OCTEP_VDPA_DEVID_CN103K_VF 0xbd03
|
|
|
|
#define OCTEP_HW_MBOX_BAR 0
|
|
#define OCTEP_HW_CAPS_BAR 4
|
|
|
|
#define OCTEP_DEV_READY_SIGNATURE 0xBABABABA
|
|
|
|
#define OCTEP_EPF_RINFO(x) (0x000209f0 | ((x) << 25))
|
|
#define OCTEP_VF_MBOX_DATA(x) (0x00010210 | ((x) << 17))
|
|
#define OCTEP_PF_MBOX_DATA(x) (0x00022000 | ((x) << 4))
|
|
|
|
#define OCTEP_EPF_RINFO_RPVF(val) (((val) >> 32) & 0xF)
|
|
#define OCTEP_EPF_RINFO_NVFS(val) (((val) >> 48) & 0x7F)
|
|
|
|
#define OCTEP_FW_READY_SIGNATURE0 0xFEEDFEED
|
|
#define OCTEP_FW_READY_SIGNATURE1 0x3355ffaa
|
|
|
|
enum octep_vdpa_dev_status {
|
|
OCTEP_VDPA_DEV_STATUS_INVALID,
|
|
OCTEP_VDPA_DEV_STATUS_ALLOC,
|
|
OCTEP_VDPA_DEV_STATUS_WAIT_FOR_BAR_INIT,
|
|
OCTEP_VDPA_DEV_STATUS_INIT,
|
|
OCTEP_VDPA_DEV_STATUS_READY,
|
|
OCTEP_VDPA_DEV_STATUS_UNINIT
|
|
};
|
|
|
|
struct octep_vring_info {
|
|
struct vdpa_callback cb;
|
|
void __iomem *notify_addr;
|
|
u32 __iomem *cb_notify_addr;
|
|
phys_addr_t notify_pa;
|
|
char msix_name[256];
|
|
};
|
|
|
|
struct octep_hw {
|
|
struct pci_dev *pdev;
|
|
u8 __iomem *base[PCI_STD_NUM_BARS];
|
|
struct virtio_pci_common_cfg __iomem *common_cfg;
|
|
u8 __iomem *dev_cfg;
|
|
u8 __iomem *isr;
|
|
void __iomem *notify_base;
|
|
phys_addr_t notify_base_pa;
|
|
u32 notify_off_multiplier;
|
|
u8 notify_bar;
|
|
struct octep_vring_info *vqs;
|
|
struct vdpa_callback config_cb;
|
|
u64 features;
|
|
u16 nr_vring;
|
|
u32 config_size;
|
|
int irq;
|
|
};
|
|
|
|
u8 octep_hw_get_status(struct octep_hw *oct_hw);
|
|
void octep_hw_set_status(struct octep_hw *dev, uint8_t status);
|
|
void octep_hw_reset(struct octep_hw *oct_hw);
|
|
void octep_write_queue_select(struct octep_hw *oct_hw, u16 queue_id);
|
|
void octep_notify_queue(struct octep_hw *oct_hw, u16 qid);
|
|
void octep_read_dev_config(struct octep_hw *oct_hw, u64 offset, void *dst, int length);
|
|
int octep_set_vq_address(struct octep_hw *oct_hw, u16 qid, u64 desc_area, u64 driver_area,
|
|
u64 device_area);
|
|
void octep_set_vq_num(struct octep_hw *oct_hw, u16 qid, u32 num);
|
|
void octep_set_vq_ready(struct octep_hw *oct_hw, u16 qid, bool ready);
|
|
bool octep_get_vq_ready(struct octep_hw *oct_hw, u16 qid);
|
|
int octep_set_vq_state(struct octep_hw *oct_hw, u16 qid, const struct vdpa_vq_state *state);
|
|
int octep_get_vq_state(struct octep_hw *oct_hw, u16 qid, struct vdpa_vq_state *state);
|
|
u16 octep_get_vq_size(struct octep_hw *oct_hw);
|
|
int octep_hw_caps_read(struct octep_hw *oct_hw, struct pci_dev *pdev);
|
|
u64 octep_hw_get_dev_features(struct octep_hw *oct_hw);
|
|
void octep_hw_set_drv_features(struct octep_hw *oct_hw, u64 features);
|
|
u64 octep_hw_get_drv_features(struct octep_hw *oct_hw);
|
|
int octep_verify_features(u64 features);
|
|
|
|
#endif /* __OCTEP_VDPA_H__ */
|