drivers/scsi/snic/vnic_dev.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /* Copyright 2014 Cisco Systems, Inc.  All rights reserved. */
   3
   4 #ifndef _VNIC_DEV_H_
   5 #define _VNIC_DEV_H_
   6
   7 #include "vnic_resource.h"
   8 #include "vnic_devcmd.h"
   9
  10 #ifndef VNIC_PADDR_TARGET
  11 #define VNIC_PADDR_TARGET       0x0000000000000000ULL
  12 #endif
  13
  14 #ifndef readq
  15 static inline u64 readq(void __iomem *reg)
  16 {
  17         return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
  18 }
  19
  20 static inline void writeq(u64 val, void __iomem *reg)
  21 {
  22         writel(lower_32_bits(val), reg);
  23         writel(upper_32_bits(val), reg + 0x4UL);
  24 }
  25 #endif
  26
  27 enum vnic_dev_intr_mode {
  28         VNIC_DEV_INTR_MODE_UNKNOWN,
  29         VNIC_DEV_INTR_MODE_INTX,
  30         VNIC_DEV_INTR_MODE_MSI,
  31         VNIC_DEV_INTR_MODE_MSIX,
  32 };
  33
  34 struct vnic_dev_bar {
  35         void __iomem *vaddr;
  36         dma_addr_t bus_addr;
  37         unsigned long len;
  38 };
  39
  40 struct vnic_dev_ring {
  41         void *descs;
  42         size_t size;
  43         dma_addr_t base_addr;
  44         size_t base_align;
  45         void *descs_unaligned;
  46         size_t size_unaligned;
  47         dma_addr_t base_addr_unaligned;
  48         unsigned int desc_size;
  49         unsigned int desc_count;
  50         unsigned int desc_avail;
  51 };
  52
  53 struct vnic_dev;
  54 struct vnic_stats;
  55
  56 void *svnic_dev_priv(struct vnic_dev *vdev);
  57 unsigned int svnic_dev_get_res_count(struct vnic_dev *vdev,
  58                                     enum vnic_res_type type);
  59 void __iomem *svnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
  60                                unsigned int index);
  61 unsigned int svnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
  62                                      unsigned int desc_count,
  63                                      unsigned int desc_size);
  64 void svnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
  65 int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
  66                              unsigned int desc_count, unsigned int desc_size);
  67 void svnic_dev_free_desc_ring(struct vnic_dev *vdev,
  68                              struct vnic_dev_ring *ring);
  69 int svnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
  70                  u64 *a0, u64 *a1, int wait);
  71 int svnic_dev_fw_info(struct vnic_dev *vdev,
  72                      struct vnic_devcmd_fw_info **fw_info);
  73 int svnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
  74                   unsigned int size, void *value);
  75 int svnic_dev_stats_clear(struct vnic_dev *vdev);
  76 int svnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
  77 int svnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
  78 void svnic_dev_notify_unset(struct vnic_dev *vdev);
  79 int svnic_dev_link_status(struct vnic_dev *vdev);
  80 u32 svnic_dev_link_down_cnt(struct vnic_dev *vdev);
  81 int svnic_dev_close(struct vnic_dev *vdev);
  82 int svnic_dev_enable_wait(struct vnic_dev *vdev);
  83 int svnic_dev_disable(struct vnic_dev *vdev);
  84 int svnic_dev_open(struct vnic_dev *vdev, int arg);
  85 int svnic_dev_open_done(struct vnic_dev *vdev, int *done);
  86 int svnic_dev_init(struct vnic_dev *vdev, int arg);
  87 struct vnic_dev *svnic_dev_alloc_discover(struct vnic_dev *vdev,
  88                                          void *priv, struct pci_dev *pdev,
  89                                          struct vnic_dev_bar *bar,
  90                                          unsigned int num_bars);
  91 void svnic_dev_set_intr_mode(struct vnic_dev *vdev,
  92                             enum vnic_dev_intr_mode intr_mode);
  93 enum vnic_dev_intr_mode svnic_dev_get_intr_mode(struct vnic_dev *vdev);
  94 void svnic_dev_unregister(struct vnic_dev *vdev);
  95 int svnic_dev_cmd_init(struct vnic_dev *vdev, int fallback);
  96 #endif /* _VNIC_DEV_H_ */