ceph/src/spdk/dpdk/drivers/raw/ifpga_rawdev/base/opae_hw_api.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2018 Intel Corporation
   3  */
   4
   5 #ifndef _OPAE_HW_API_H_
   6 #define _OPAE_HW_API_H_
   7
   8 #include <stdint.h>
   9 #include <stdlib.h>
  10 #include <stdio.h>
  11 #include <sys/queue.h>
  12
  13 #include "opae_osdep.h"
  14
  15 #ifndef PCI_MAX_RESOURCE
  16 #define PCI_MAX_RESOURCE 6
  17 #endif
  18
  19 struct opae_adapter;
  20
  21 enum opae_adapter_type {
  22         OPAE_FPGA_PCI,
  23         OPAE_FPGA_NET,
  24 };
  25
  26 /* OPAE Manager Data Structure */
  27 struct opae_manager_ops;
  28
  29 /*
  30  * opae_manager has pointer to its parent adapter, as it could be able to manage
  31  * all components on this FPGA device (adapter). If not the case, don't set this
  32  * adapter, which limit opae_manager ops to manager itself.
  33  */
  34 struct opae_manager {
  35         const char *name;
  36         struct opae_adapter *adapter;
  37         struct opae_manager_ops *ops;
  38         void *data;
  39 };
  40
  41 /* FIXME: add more management ops, e.g power/thermal and etc */
  42 struct opae_manager_ops {
  43         int (*flash)(struct opae_manager *mgr, int id, void *buffer,
  44                      u32 size, u64 *status);
  45 };
  46
  47 /* OPAE Manager APIs */
  48 struct opae_manager *
  49 opae_manager_alloc(const char *name, struct opae_manager_ops *ops, void *data);
  50 #define opae_manager_free(mgr) opae_free(mgr)
  51 int opae_manager_flash(struct opae_manager *mgr, int acc_id, void *buf,
  52                        u32 size, u64 *status);
  53
  54 /* OPAE Bridge Data Structure */
  55 struct opae_bridge_ops;
  56
  57 /*
  58  * opae_bridge only has pointer to its downstream accelerator.
  59  */
  60 struct opae_bridge {
  61         const char *name;
  62         int id;
  63         struct opae_accelerator *acc;
  64         struct opae_bridge_ops *ops;
  65         void *data;
  66 };
  67
  68 struct opae_bridge_ops {
  69         int (*reset)(struct opae_bridge *br);
  70 };
  71
  72 /* OPAE Bridge APIs */
  73 struct opae_bridge *
  74 opae_bridge_alloc(const char *name, struct opae_bridge_ops *ops, void *data);
  75 int opae_bridge_reset(struct opae_bridge *br);
  76 #define opae_bridge_free(br) opae_free(br)
  77
  78 /* OPAE Acceleraotr Data Structure */
  79 struct opae_accelerator_ops;
  80
  81 /*
  82  * opae_accelerator has pointer to its upstream bridge(port).
  83  * In some cases, if we allow same user to do PR on its own accelerator, then
  84  * set the manager pointer during the enumeration. But in other cases, the PR
  85  * functions only could be done via manager in another module / thread / service
  86  * / application for better protection.
  87  */
  88 struct opae_accelerator {
  89         TAILQ_ENTRY(opae_accelerator) node;
  90         const char *name;
  91         int index;
  92         struct opae_bridge *br;
  93         struct opae_manager *mgr;
  94         struct opae_accelerator_ops *ops;
  95         void *data;
  96 };
  97
  98 struct opae_acc_info {
  99         unsigned int num_regions;
 100         unsigned int num_irqs;
 101 };
 102
 103 struct opae_acc_region_info {
 104         u32 flags;
 105 #define ACC_REGION_READ         (1 << 0)
 106 #define ACC_REGION_WRITE        (1 << 1)
 107 #define ACC_REGION_MMIO         (1 << 2)
 108         u32 index;
 109         u64 phys_addr;
 110         u64 len;
 111         u8 *addr;
 112 };
 113
 114 struct opae_accelerator_ops {
 115         int (*read)(struct opae_accelerator *acc, unsigned int region_idx,
 116                     u64 offset, unsigned int byte, void *data);
 117         int (*write)(struct opae_accelerator *acc, unsigned int region_idx,
 118                      u64 offset, unsigned int byte, void *data);
 119         int (*get_info)(struct opae_accelerator *acc,
 120                         struct opae_acc_info *info);
 121         int (*get_region_info)(struct opae_accelerator *acc,
 122                                struct opae_acc_region_info *info);
 123         int (*set_irq)(struct opae_accelerator *acc,
 124                        u32 start, u32 count, s32 evtfds[]);
 125         int (*get_uuid)(struct opae_accelerator *acc,
 126                         struct uuid *uuid);
 127 };
 128
 129 /* OPAE accelerator APIs */
 130 struct opae_accelerator *
 131 opae_accelerator_alloc(const char *name, struct opae_accelerator_ops *ops,
 132                        void *data);
 133 #define opae_accelerator_free(acc) opae_free(acc)
 134 int opae_acc_get_info(struct opae_accelerator *acc, struct opae_acc_info *info);
 135 int opae_acc_get_region_info(struct opae_accelerator *acc,
 136                              struct opae_acc_region_info *info);
 137 int opae_acc_set_irq(struct opae_accelerator *acc,
 138                      u32 start, u32 count, s32 evtfds[]);
 139 int opae_acc_get_uuid(struct opae_accelerator *acc,
 140                       struct uuid *uuid);
 141
 142 static inline struct opae_bridge *
 143 opae_acc_get_br(struct opae_accelerator *acc)
 144 {
 145         return acc ? acc->br : NULL;
 146 }
 147
 148 static inline struct opae_manager *
 149 opae_acc_get_mgr(struct opae_accelerator *acc)
 150 {
 151         return acc ? acc->mgr : NULL;
 152 }
 153
 154 int opae_acc_reg_read(struct opae_accelerator *acc, unsigned int region_idx,
 155                       u64 offset, unsigned int byte, void *data);
 156 int opae_acc_reg_write(struct opae_accelerator *acc, unsigned int region_idx,
 157                        u64 offset, unsigned int byte, void *data);
 158
 159 #define opae_acc_reg_read64(acc, region, offset, data) \
 160         opae_acc_reg_read(acc, region, offset, 8, data)
 161 #define opae_acc_reg_write64(acc, region, offset, data) \
 162         opae_acc_reg_write(acc, region, offset, 8, data)
 163 #define opae_acc_reg_read32(acc, region, offset, data) \
 164         opae_acc_reg_read(acc, region, offset, 4, data)
 165 #define opae_acc_reg_write32(acc, region, offset, data) \
 166         opae_acc_reg_write(acc, region, offset, 4, data)
 167 #define opae_acc_reg_read16(acc, region, offset, data) \
 168         opae_acc_reg_read(acc, region, offset, 2, data)
 169 #define opae_acc_reg_write16(acc, region, offset, data) \
 170         opae_acc_reg_write(acc, region, offset, 2, data)
 171 #define opae_acc_reg_read8(acc, region, offset, data) \
 172         opae_acc_reg_read(acc, region, offset, 1, data)
 173 #define opae_acc_reg_write8(acc, region, offset, data) \
 174         opae_acc_reg_write(acc, region, offset, 1, data)
 175
 176 /*for data stream read/write*/
 177 int opae_acc_data_read(struct opae_accelerator *acc, unsigned int flags,
 178                        u64 offset, unsigned int byte, void *data);
 179 int opae_acc_data_write(struct opae_accelerator *acc, unsigned int flags,
 180                         u64 offset, unsigned int byte, void *data);
 181
 182 /* OPAE Adapter Data Structure */
 183 struct opae_adapter_data {
 184         enum opae_adapter_type type;
 185 };
 186
 187 struct opae_reg_region {
 188         u64 phys_addr;
 189         u64 len;
 190         u8 *addr;
 191 };
 192
 193 struct opae_adapter_data_pci {
 194         enum opae_adapter_type type;
 195         u16 device_id;
 196         u16 vendor_id;
 197         struct opae_reg_region region[PCI_MAX_RESOURCE];
 198         int vfio_dev_fd;  /* VFIO device file descriptor */
 199 };
 200
 201 /* FIXME: OPAE_FPGA_NET type */
 202 struct opae_adapter_data_net {
 203         enum opae_adapter_type type;
 204 };
 205
 206 struct opae_adapter_ops {
 207         int (*enumerate)(struct opae_adapter *adapter);
 208         void (*destroy)(struct opae_adapter *adapter);
 209 };
 210
 211 TAILQ_HEAD(opae_accelerator_list, opae_accelerator);
 212
 213 #define opae_adapter_for_each_acc(adatper, acc) \
 214         TAILQ_FOREACH(acc, &adapter->acc_list, node)
 215
 216 struct opae_adapter {
 217         const char *name;
 218         struct opae_manager *mgr;
 219         struct opae_accelerator_list acc_list;
 220         struct opae_adapter_ops *ops;
 221         void *data;
 222 };
 223
 224 /* OPAE Adapter APIs */
 225 void *opae_adapter_data_alloc(enum opae_adapter_type type);
 226 #define opae_adapter_data_free(data) opae_free(data)
 227
 228 struct opae_adapter *opae_adapter_alloc(const char *name, void *data);
 229 #define opae_adapter_free(adapter) opae_free(adapter)
 230
 231 int opae_adapter_enumerate(struct opae_adapter *adapter);
 232 void opae_adapter_destroy(struct opae_adapter *adapter);
 233 static inline struct opae_manager *
 234 opae_adapter_get_mgr(struct opae_adapter *adapter)
 235 {
 236         return adapter ? adapter->mgr : NULL;
 237 }
 238
 239 struct opae_accelerator *
 240 opae_adapter_get_acc(struct opae_adapter *adapter, int acc_id);
 241
 242 static inline void opae_adapter_add_acc(struct opae_adapter *adapter,
 243                                         struct opae_accelerator *acc)
 244 {
 245         TAILQ_INSERT_TAIL(&adapter->acc_list, acc, node);
 246 }
 247
 248 static inline void opae_adapter_remove_acc(struct opae_adapter *adapter,
 249                                            struct opae_accelerator *acc)
 250 {
 251         TAILQ_REMOVE(&adapter->acc_list, acc, node);
 252 }
 253 #endif /* _OPAE_HW_API_H_*/