ceph/src/seastar/dpdk/drivers/bus/dpaa/include/process.h

   1 /* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
   2  *
   3  * Copyright 2010-2011 Freescale Semiconductor, Inc.
   4  * All rights reserved.
   5  *
   6  */
   7
   8 #ifndef __PROCESS_H
   9 #define __PROCESS_H
  10
  11 #include <compat.h>
  12
  13 /* The process device underlies process-wide user/kernel interactions, such as
  14  * mapping dma_mem memory and providing accompanying ioctl()s. (This isn't used
  15  * for portals, which use one UIO device each.).
  16  */
  17 #define PROCESS_PATH            "/dev/fsl-usdpaa"
  18
  19 /* Allocation of resource IDs uses a generic interface. This enum is used to
  20  * distinguish between the type of underlying object being manipulated.
  21  */
  22 enum dpaa_id_type {
  23         dpaa_id_fqid,
  24         dpaa_id_bpid,
  25         dpaa_id_qpool,
  26         dpaa_id_cgrid,
  27         dpaa_id_max /* <-- not a valid type, represents the number of types */
  28 };
  29
  30 int process_alloc(enum dpaa_id_type id_type, uint32_t *base, uint32_t num,
  31                   uint32_t align, int partial);
  32 void process_release(enum dpaa_id_type id_type, uint32_t base, uint32_t num);
  33
  34 int process_reserve(enum dpaa_id_type id_type, uint32_t base, uint32_t num);
  35
  36 /* Mapping and using QMan/BMan portals */
  37 enum dpaa_portal_type {
  38         dpaa_portal_qman,
  39         dpaa_portal_bman,
  40 };
  41
  42 struct dpaa_portal_map {
  43         void *cinh;
  44         void *cena;
  45 };
  46
  47 struct dpaa_ioctl_portal_map {
  48         /* Input parameter, is a qman or bman portal required. */
  49         enum dpaa_portal_type type;
  50         /* Specifes a specific portal index to map or 0xffffffff
  51          * for don't care.
  52          */
  53         uint32_t index;
  54
  55         /* Return value if the map succeeds, this gives the mapped
  56          * cache-inhibited (cinh) and cache-enabled (cena) addresses.
  57          */
  58         struct dpaa_portal_map addr;
  59
  60         /* Qman-specific return values */
  61         u16 channel;
  62         uint32_t pools;
  63 };
  64
  65 int process_portal_map(struct dpaa_ioctl_portal_map *params);
  66 int process_portal_unmap(struct dpaa_portal_map *map);
  67
  68 struct dpaa_ioctl_irq_map {
  69         enum dpaa_portal_type type; /* Type of portal to map */
  70         int fd; /* File descriptor that contains the portal */
  71         void *portal_cinh; /* Cache inhibited area to identify the portal */
  72 };
  73
  74 int process_portal_irq_map(int fd,  struct dpaa_ioctl_irq_map *irq);
  75 int process_portal_irq_unmap(int fd);
  76
  77 #endif  /*  __PROCESS_H */