2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * pci.h: PCI definitions.
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef included_vlib_pci_h
41 #define included_vlib_pci_h
43 #include <vlib/vlib.h>
44 #include <vlib/pci/pci_config.h>
47 typedef CLIB_PACKED (union
60 typedef struct vlib_pci_device_info
63 #define VLIB_PCI_DEVICE_INFO_F_NOIOMMU (1 << 0);
76 /* Vital Product Data */
84 /* First 64 bytes of configuration space. */
87 pci_config_type0_regs_t config0;
88 pci_config_type1_regs_t config1;
95 } vlib_pci_device_info_t;
97 typedef u32 vlib_pci_dev_handle_t;
99 vlib_pci_device_info_t *vlib_pci_get_device_info (vlib_pci_addr_t * addr,
100 clib_error_t ** error);
101 vlib_pci_addr_t *vlib_pci_get_all_dev_addrs ();
102 vlib_pci_addr_t *vlib_pci_get_addr (vlib_pci_dev_handle_t h);
103 uword vlib_pci_get_private_data (vlib_pci_dev_handle_t h);
104 void vlib_pci_set_private_data (vlib_pci_dev_handle_t h, uword private_data);
107 vlib_pci_free_device_info (vlib_pci_device_info_t * di)
111 vec_free (di->product_name);
112 vec_free (di->vpd_r);
113 vec_free (di->vpd_w);
114 vec_free (di->driver_name);
120 u16 vendor_id, device_id;
123 typedef void (pci_intx_handler_function_t) (vlib_pci_dev_handle_t handle);
124 typedef void (pci_msix_handler_function_t) (vlib_pci_dev_handle_t handle,
127 typedef struct _pci_device_registration
129 /* Driver init function. */
130 clib_error_t *(*init_function) (vlib_main_t * vm,
131 vlib_pci_dev_handle_t handle);
133 /* Interrupt handler */
134 pci_intx_handler_function_t *interrupt_handler;
136 /* List of registrations */
137 struct _pci_device_registration *next_registration;
139 /* Vendor/device ids supported by this driver. */
140 pci_device_id_t supported_devices[];
141 } pci_device_registration_t;
143 /* Pool of PCI devices. */
146 vlib_main_t *vlib_main;
147 pci_device_registration_t *pci_device_registrations;
150 extern vlib_pci_main_t pci_main;
152 #define PCI_REGISTER_DEVICE(x,...) \
153 __VA_ARGS__ pci_device_registration_t x; \
154 static void __vlib_add_pci_device_registration_##x (void) \
155 __attribute__((__constructor__)) ; \
156 static void __vlib_add_pci_device_registration_##x (void) \
158 vlib_pci_main_t * pm = &pci_main; \
159 x.next_registration = pm->pci_device_registrations; \
160 pm->pci_device_registrations = &x; \
162 static void __vlib_rm_pci_device_registration_##x (void) \
163 __attribute__((__destructor__)) ; \
164 static void __vlib_rm_pci_device_registration_##x (void) \
166 vlib_pci_main_t * pm = &pci_main; \
167 VLIB_REMOVE_FROM_LINKED_LIST (pm->pci_device_registrations, \
168 &x, next_registration); \
170 __VA_ARGS__ pci_device_registration_t x
172 clib_error_t *vlib_pci_bind_to_uio (vlib_pci_addr_t * addr,
173 char *uio_driver_name);
175 /* Configuration space read/write. */
176 clib_error_t *vlib_pci_read_write_config (vlib_pci_dev_handle_t handle,
177 vlib_read_or_write_t read_or_write,
179 void *data, u32 n_bytes);
182 static inline clib_error_t * \
183 vlib_pci_read_config_##t (vlib_pci_dev_handle_t h, \
184 uword address, t * data) \
186 return vlib_pci_read_write_config (h, VLIB_READ,address, data, \
197 static inline clib_error_t * \
198 vlib_pci_write_config_##t (vlib_pci_dev_handle_t h, uword address, \
201 return vlib_pci_read_write_config (h, VLIB_WRITE, \
202 address, data, sizeof (data[0])); \
211 static inline clib_error_t *
212 vlib_pci_intr_enable (vlib_pci_dev_handle_t h)
217 err = vlib_pci_read_config_u16 (h, 4, &command);
222 command &= ~PCI_COMMAND_INTX_DISABLE;
224 return vlib_pci_write_config_u16 (h, 4, &command);
227 static inline clib_error_t *
228 vlib_pci_intr_disable (vlib_pci_dev_handle_t h)
233 err = vlib_pci_read_config_u16 (h, 4, &command);
238 command |= PCI_COMMAND_INTX_DISABLE;
240 return vlib_pci_write_config_u16 (h, 4, &command);
243 static inline clib_error_t *
244 vlib_pci_bus_master_enable (vlib_pci_dev_handle_t h)
249 /* Set bus master enable (BME) */
250 err = vlib_pci_read_config_u16 (h, 4, &command);
255 if (command & PCI_COMMAND_BUS_MASTER)
258 command |= PCI_COMMAND_BUS_MASTER;
260 return vlib_pci_write_config_u16 (h, 4, &command);
263 clib_error_t *vlib_pci_device_open (vlib_pci_addr_t * addr,
264 pci_device_id_t ids[],
265 vlib_pci_dev_handle_t * handle);
266 void vlib_pci_device_close (vlib_pci_dev_handle_t h);
268 clib_error_t *vlib_pci_map_region (vlib_pci_dev_handle_t h, u32 resource,
271 clib_error_t *vlib_pci_map_region_fixed (vlib_pci_dev_handle_t h,
272 u32 resource, u8 * addr,
275 clib_error_t *vlib_pci_register_intx_handler (vlib_pci_dev_handle_t h,
276 pci_intx_handler_function_t *
278 clib_error_t *vlib_pci_register_msix_handler (vlib_pci_dev_handle_t h,
279 u32 start, u32 count,
280 pci_msix_handler_function_t *
282 clib_error_t *vlib_pci_enable_msix_irq (vlib_pci_dev_handle_t h, u16 start,
284 clib_error_t *vlib_pci_disable_msix_irq (vlib_pci_dev_handle_t h, u16 start,
287 unformat_function_t unformat_vlib_pci_addr;
288 format_function_t format_vlib_pci_addr;
289 format_function_t format_vlib_pci_link_speed;
290 format_function_t format_vlib_pci_vpd;
292 #endif /* included_vlib_pci_h */
295 * fd.io coding-style-patch-verification: ON
298 * eval: (c-set-style "gnu")