drivers/scsi/snic/vnic_dev.h

   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
  29 static inline u64 readq(void __iomem *reg)
  30 {
  31         return ((u64)readl(reg + 0x4UL) << 32) | (u64)readl(reg);
  32 }
  33
  34 static 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
  41 enum 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
  48 struct vnic_dev_bar {
  49         void __iomem *vaddr;
  50         dma_addr_t bus_addr;
  51         unsigned long len;
  52 };
  53
  54 struct 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
  67 struct vnic_dev;
  68 struct vnic_stats;
  69
  70 void *svnic_dev_priv(struct vnic_dev *vdev);
  71 unsigned int svnic_dev_get_res_count(struct vnic_dev *vdev,
  72                                     enum vnic_res_type type);
  73 void __iomem *svnic_dev_get_res(struct vnic_dev *vdev, enum vnic_res_type type,
  74                                unsigned int index);
  75 unsigned int svnic_dev_desc_ring_size(struct vnic_dev_ring *ring,
  76                                      unsigned int desc_count,
  77                                      unsigned int desc_size);
  78 void svnic_dev_clear_desc_ring(struct vnic_dev_ring *ring);
  79 int svnic_dev_alloc_desc_ring(struct vnic_dev *vdev, struct vnic_dev_ring *ring,
  80                              unsigned int desc_count, unsigned int desc_size);
  81 void svnic_dev_free_desc_ring(struct vnic_dev *vdev,
  82                              struct vnic_dev_ring *ring);
  83 int svnic_dev_cmd(struct vnic_dev *vdev, enum vnic_devcmd_cmd cmd,
  84                  u64 *a0, u64 *a1, int wait);
  85 int svnic_dev_fw_info(struct vnic_dev *vdev,
  86                      struct vnic_devcmd_fw_info **fw_info);
  87 int svnic_dev_spec(struct vnic_dev *vdev, unsigned int offset,
  88                   unsigned int size, void *value);
  89 int svnic_dev_stats_clear(struct vnic_dev *vdev);
  90 int svnic_dev_stats_dump(struct vnic_dev *vdev, struct vnic_stats **stats);
  91 int svnic_dev_notify_set(struct vnic_dev *vdev, u16 intr);
  92 void svnic_dev_notify_unset(struct vnic_dev *vdev);
  93 int svnic_dev_link_status(struct vnic_dev *vdev);
  94 u32 svnic_dev_link_down_cnt(struct vnic_dev *vdev);
  95 int svnic_dev_close(struct vnic_dev *vdev);
  96 int svnic_dev_enable_wait(struct vnic_dev *vdev);
  97 int svnic_dev_disable(struct vnic_dev *vdev);
  98 int svnic_dev_open(struct vnic_dev *vdev, int arg);
  99 int svnic_dev_open_done(struct vnic_dev *vdev, int *done);
 100 int svnic_dev_init(struct vnic_dev *vdev, int arg);
 101 struct 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);
 105 void svnic_dev_set_intr_mode(struct vnic_dev *vdev,
 106                             enum vnic_dev_intr_mode intr_mode);
 107 enum vnic_dev_intr_mode svnic_dev_get_intr_mode(struct vnic_dev *vdev);
 108 void svnic_dev_unregister(struct vnic_dev *vdev);
 109 int svnic_dev_cmd_init(struct vnic_dev *vdev, int fallback);
 110 #endif /* _VNIC_DEV_H_ */