LXR linux/drivers/scsi/snic/vnic

   1/*
   2 * Copyright 2014 Cisco Systems, Inc.  All rights reserved.
   3 *
   4 * This program is free software; you may redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; version 2 of the License.
   7 *
   8 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   9 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  10 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  11 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  12 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  13 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  14 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  15 * SOFTWARE.
  16 */
  17
  18#ifndef _VNIC_DEV_H_
  19#define _VNIC_DEV_H_
  20
  21#include "vnic_resource.h"
  22#include "vnic_devcmd.h"
  23
  24#ifndef VNIC_PADDR_TARGET
  25#define VNIC_PADDR_TARGET       0x0000000000000000ULL
  26#endif
  27
  28#ifndef readq
  29static inline u64 readq(void __iomem *reg)
  30{
  31        return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
  32}
  33
  34static inline void writeq(u64 val, void __iomem *reg)
  35{
  36        writel(lower_32_bits(val), reg);
  37        writel(upper_32_bits(val), reg + 0x4UL);
  38}
  39#endif
  40
  41enum vnic_dev_intr_mode {
  42        VNIC_DEV_INTR_MODE_UNKNOWN,
  43        VNIC_DEV_INTR_MODE_INTX,
  44        VNIC_DEV_INTR_MODE_MSI,
  45        VNIC_DEV_INTR_MODE_MSIX,
  46};
  47
  48struct vnic_dev_bar {
  49        void __iomem *vaddr;
  50        dma_addr_t bus_addr;
  51        unsigned long len;
  52};
  53
  54struct vnic_dev_ring {
  55        void *descs;
  56        size_t size;
  57        dma_addr_t base_addr;
  58        size_t base_align;
  59        void *descs_unaligned;
  60        size_t size_unaligned;
  61        dma_addr_t base_addr_unaligned;
  62        unsigned int desc_size;
  63        unsigned int desc_count;
  64        unsigned int desc_avail;
  65};
  66
  67struct vnic_dev;
  68struct vnic_stats;
  69
  70void *svnic_dev_priv(struct vnic_dev *vdev);
  71unsigned int svnic_dev_get_res_count(struct vnic_dev *vdev,
  72                                    enum vnic_res_type type);
  73void __iomem *svnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
  74                               unsigned int index);
  75unsigned int svnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
  76                                     unsigned int desc_count,
  77                                     unsigned int desc_size);
  78void svnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
  79int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
  80                             unsigned int desc_count, unsigned int desc_size);
  81void svnic_dev_free_desc_ring(struct vnic_dev *vdev,
  82                             struct vnic_dev_ring *ring);
  83int svnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
  84                 u64 *a0, u64 *a1, int wait);
  85int svnic_dev_fw_info(struct vnic_dev *vdev,
  86                     struct vnic_devcmd_fw_info **fw_info);
  87int svnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
  88                  unsigned int size, void *value);
  89int svnic_dev_stats_clear(struct vnic_dev *vdev);
  90int svnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
  91int svnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
  92void svnic_dev_notify_unset(struct vnic_dev *vdev);
  93int svnic_dev_link_status(struct vnic_dev *vdev);
  94u32 svnic_dev_link_down_cnt(struct vnic_dev *vdev);
  95int svnic_dev_close(struct vnic_dev *vdev);
  96int svnic_dev_enable_wait(struct vnic_dev *vdev);
  97int svnic_dev_disable(struct vnic_dev *vdev);
  98int svnic_dev_open(struct vnic_dev *vdev, int arg);
  99int svnic_dev_open_done(struct vnic_dev *vdev, int *done);
 100int svnic_dev_init(struct vnic_dev *vdev, int arg);
 101struct vnic_dev *svnic_dev_alloc_discover(struct vnic_dev *vdev,
 102                                         void *priv, struct pci_dev *pdev,
 103                                         struct vnic_dev_bar *bar,
 104                                         unsigned int num_bars);
 105void svnic_dev_set_intr_mode(struct vnic_dev *vdev,
 106                            enum vnic_dev_intr_mode intr_mode);
 107enum vnic_dev_intr_mode svnic_dev_get_intr_mode(struct vnic_dev *vdev);
 108void svnic_dev_unregister(struct vnic_dev *vdev);
 109int svnic_dev_cmd_init(struct vnic_dev *vdev, int fallback);
 110#endif /* _VNIC_DEV_H_ */
 111