drivers/vdpa/pds/vdpa_dev.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright(c) 2023 Advanced Micro Devices, Inc */
   3
   4 #ifndef _VDPA_DEV_H_
   5 #define _VDPA_DEV_H_
   6
   7 #include <linux/pci.h>
   8 #include <linux/vdpa.h>
   9
  10 struct pds_vdpa_vq_info {
  11         bool ready;
  12         u64 desc_addr;
  13         u64 avail_addr;
  14         u64 used_addr;
  15         u32 q_len;
  16         u16 qid;
  17         int irq;
  18         char irq_name[32];
  19
  20         void __iomem *notify;
  21         dma_addr_t notify_pa;
  22
  23         u64 doorbell;
  24         u16 avail_idx;
  25         u16 used_idx;
  26
  27         struct vdpa_callback event_cb;
  28         struct pds_vdpa_device *pdsv;
  29 };
  30
  31 #define PDS_VDPA_MAX_QUEUES     65
  32 #define PDS_VDPA_MAX_QLEN       32768
  33 struct pds_vdpa_device {
  34         struct vdpa_device vdpa_dev;
  35         struct pds_vdpa_aux *vdpa_aux;
  36
  37         struct pds_vdpa_vq_info vqs[PDS_VDPA_MAX_QUEUES];
  38         u64 supported_features;         /* supported device features */
  39         u64 negotiated_features;        /* negotiated features */
  40         u8 vdpa_index;                  /* rsvd for future subdevice use */
  41         u8 num_vqs;                     /* num vqs in use */
  42         u8 mac[ETH_ALEN];               /* mac selected when the device was added */
  43         struct vdpa_callback config_cb;
  44         struct notifier_block nb;
  45 };
  46
  47 #define PDS_VDPA_PACKED_INVERT_IDX      0x8000
  48
  49 void pds_vdpa_release_irqs(struct pds_vdpa_device *pdsv);
  50 int pds_vdpa_get_mgmt_info(struct pds_vdpa_aux *vdpa_aux);
  51 #endif /* _VDPA_DEV_H_ */