drivers/compress/octeontx/otx_zip.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Cavium, Inc
   3  */
   4
   5 #include "otx_zip.h"
   6
   7 uint64_t
   8 zip_reg_read64(uint8_t *hw_addr, uint64_t offset)
   9 {
  10         uint8_t *base = hw_addr;
  11         return *(volatile uint64_t *)(base + offset);
  12 }
  13
  14 void
  15 zip_reg_write64(uint8_t *hw_addr, uint64_t offset, uint64_t val)
  16 {
  17         uint8_t *base = hw_addr;
  18         *(uint64_t *)(base + offset) = val;
  19 }
  20
  21 int
  22 zipvf_create(struct rte_compressdev *compressdev)
  23 {
  24         struct   rte_pci_device *pdev = RTE_DEV_TO_PCI(compressdev->device);
  25         struct   zip_vf *zipvf = NULL;
  26         char     *dev_name = compressdev->data->name;
  27         void     *vbar0;
  28         uint64_t reg;
  29
  30         if (pdev->mem_resource[0].phys_addr == 0ULL)
  31                 return -EIO;
  32
  33         vbar0 = pdev->mem_resource[0].addr;
  34         if (!vbar0) {
  35                 ZIP_PMD_ERR("Failed to map BAR0 of %s", dev_name);
  36                 return -ENODEV;
  37         }
  38
  39         zipvf = (struct zip_vf *)(compressdev->data->dev_private);
  40
  41         if (!zipvf)
  42                 return -ENOMEM;
  43
  44         zipvf->vbar0 = vbar0;
  45         reg = zip_reg_read64(zipvf->vbar0, ZIP_VF_PF_MBOXX(0));
  46         /* Storing domain in local to ZIP VF */
  47         zipvf->dom_sdom = reg;
  48         zipvf->pdev = pdev;
  49         zipvf->max_nb_queue_pairs = ZIP_MAX_VF_QUEUE;
  50         return 0;
  51 }
  52
  53 int
  54 zipvf_destroy(struct rte_compressdev *compressdev)
  55 {
  56         struct zip_vf *vf = (struct zip_vf *)(compressdev->data->dev_private);
  57
  58         /* Rewriting the domain_id in ZIP_VF_MBOX for app rerun */
  59         zip_reg_write64(vf->vbar0, ZIP_VF_PF_MBOXX(0), vf->dom_sdom);
  60
  61         return 0;
  62 }