Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1 | /* |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 2 | * Copyright (c) 2016 Cisco and/or its affiliates. |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 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: |
| 6 | * |
| 7 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 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. |
| 14 | */ |
| 15 | /* |
| 16 | * pci.c: Linux user space PCI bus management. |
| 17 | * |
| 18 | * Copyright (c) 2008 Eliot Dresselhaus |
| 19 | * |
| 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: |
| 27 | * |
| 28 | * The above copyright notice and this permission notice shall be |
| 29 | * included in all copies or substantial portions of the Software. |
| 30 | * |
| 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. |
| 38 | */ |
| 39 | |
Damjan Marion | 01914ce | 2017-09-14 19:04:50 +0200 | [diff] [blame] | 40 | #include <vppinfra/linux/sysfs.h> |
| 41 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 42 | #include <vlib/vlib.h> |
| 43 | #include <vlib/pci/pci.h> |
| 44 | #include <vlib/unix/unix.h> |
Damjan Marion | 1ba0fa4 | 2018-03-04 17:19:08 +0100 | [diff] [blame] | 45 | #include <vlib/linux/vfio.h> |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 46 | |
| 47 | #include <sys/types.h> |
| 48 | #include <sys/stat.h> |
| 49 | #include <fcntl.h> |
| 50 | #include <dirent.h> |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 51 | #include <sys/ioctl.h> |
| 52 | #include <net/if.h> |
| 53 | #include <linux/ethtool.h> |
| 54 | #include <linux/sockios.h> |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 55 | #include <linux/vfio.h> |
| 56 | #include <sys/eventfd.h> |
| 57 | |
| 58 | static const char *sysfs_pci_dev_path = "/sys/bus/pci/devices"; |
| 59 | static const char *sysfs_pci_drv_path = "/sys/bus/pci/drivers"; |
Damjan Marion | 2752b89 | 2017-12-11 15:55:56 +0100 | [diff] [blame] | 60 | static char *sysfs_mod_vfio_noiommu = |
| 61 | "/sys/module/vfio/parameters/enable_unsafe_noiommu_mode"; |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 62 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 63 | #define pci_log_debug(vm, dev, f, ...) \ |
| 64 | vlib_log(VLIB_LOG_LEVEL_DEBUG, pci_main.log_default, "%U: " f, \ |
| 65 | format_vlib_pci_addr, vlib_pci_get_addr(vm, dev->handle), ## __VA_ARGS__) |
| 66 | #define pci_log_err(vm, dev, f, ...) \ |
| 67 | vlib_log(VLIB_LOG_LEVEL_ERR, pci_main.log_default, "%U: " f, \ |
| 68 | format_vlib_pci_addr, vlib_pci_get_addr(vm, dev->handle), ## __VA_ARGS__) |
| 69 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 70 | typedef struct |
| 71 | { |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 72 | int fd; |
| 73 | void *addr; |
| 74 | size_t size; |
| 75 | } linux_pci_region_t; |
| 76 | |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 77 | typedef struct |
| 78 | { |
| 79 | int fd; |
| 80 | u32 clib_file_index; |
| 81 | union |
| 82 | { |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 83 | pci_intx_handler_function_t *intx_handler; |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 84 | pci_msix_handler_function_t *msix_handler; |
| 85 | }; |
| 86 | } linux_pci_irq_t; |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 87 | |
| 88 | typedef enum |
| 89 | { |
| 90 | LINUX_PCI_DEVICE_TYPE_UNKNOWN, |
| 91 | LINUX_PCI_DEVICE_TYPE_UIO, |
| 92 | LINUX_PCI_DEVICE_TYPE_VFIO, |
| 93 | } linux_pci_device_type_t; |
| 94 | |
| 95 | typedef struct |
| 96 | { |
| 97 | linux_pci_device_type_t type; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 98 | vlib_pci_dev_handle_t handle; |
| 99 | vlib_pci_addr_t addr; |
Damjan Marion | d2bfb78 | 2019-01-07 20:56:04 +0100 | [diff] [blame^] | 100 | u32 numa_node; |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 101 | |
| 102 | /* Resource file descriptors. */ |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 103 | linux_pci_region_t *regions; |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 104 | |
| 105 | /* File descriptor for config space read/write. */ |
| 106 | int config_fd; |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 107 | u64 config_offset; |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 108 | |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 109 | /* Device File descriptor */ |
| 110 | int fd; |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 111 | |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 112 | /* read/write file descriptor for io bar */ |
| 113 | int io_fd; |
| 114 | u64 io_offset; |
| 115 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 116 | /* Minor device for uio device. */ |
| 117 | u32 uio_minor; |
| 118 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 119 | /* Interrupt handlers */ |
| 120 | linux_pci_irq_t intx_irq; |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 121 | linux_pci_irq_t *msix_irqs; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 122 | |
| 123 | /* private data */ |
| 124 | uword private_data; |
| 125 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 126 | u8 supports_va_dma; |
| 127 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 128 | } linux_pci_device_t; |
| 129 | |
| 130 | /* Pool of PCI devices. */ |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 131 | typedef struct |
| 132 | { |
| 133 | vlib_main_t *vlib_main; |
| 134 | linux_pci_device_t *linux_pci_devices; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 135 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 136 | } linux_pci_main_t; |
| 137 | |
| 138 | extern linux_pci_main_t linux_pci_main; |
| 139 | |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 140 | static linux_pci_device_t * |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 141 | linux_pci_get_device (vlib_pci_dev_handle_t h) |
| 142 | { |
| 143 | linux_pci_main_t *lpm = &linux_pci_main; |
| 144 | return pool_elt_at_index (lpm->linux_pci_devices, h); |
| 145 | } |
| 146 | |
| 147 | uword |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 148 | vlib_pci_get_private_data (vlib_main_t * vm, vlib_pci_dev_handle_t h) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 149 | { |
| 150 | linux_pci_device_t *d = linux_pci_get_device (h); |
| 151 | return d->private_data; |
| 152 | } |
| 153 | |
| 154 | void |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 155 | vlib_pci_set_private_data (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 156 | uword private_data) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 157 | { |
| 158 | linux_pci_device_t *d = linux_pci_get_device (h); |
| 159 | d->private_data = private_data; |
| 160 | } |
| 161 | |
| 162 | vlib_pci_addr_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 163 | vlib_pci_get_addr (vlib_main_t * vm, vlib_pci_dev_handle_t h) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 164 | { |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 165 | linux_pci_device_t *d = linux_pci_get_device (h); |
| 166 | return &d->addr; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 167 | } |
| 168 | |
Damjan Marion | d2bfb78 | 2019-01-07 20:56:04 +0100 | [diff] [blame^] | 169 | u32 |
| 170 | vlib_pci_get_numa_node (vlib_main_t * vm, vlib_pci_dev_handle_t h) |
| 171 | { |
| 172 | linux_pci_device_t *d = linux_pci_get_device (h); |
| 173 | return d->numa_node; |
| 174 | } |
| 175 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 176 | /* Call to allocate/initialize the pci subsystem. |
| 177 | This is not an init function so that users can explicitly enable |
| 178 | pci only when it's needed. */ |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 179 | clib_error_t *pci_bus_init (vlib_main_t * vm); |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 180 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 181 | linux_pci_main_t linux_pci_main; |
| 182 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 183 | vlib_pci_device_info_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 184 | vlib_pci_get_device_info (vlib_main_t * vm, vlib_pci_addr_t * addr, |
| 185 | clib_error_t ** error) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 186 | { |
Damjan Marion | 1ba0fa4 | 2018-03-04 17:19:08 +0100 | [diff] [blame] | 187 | linux_vfio_main_t *lvm = &vfio_main; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 188 | clib_error_t *err; |
| 189 | vlib_pci_device_info_t *di; |
| 190 | u8 *f = 0; |
| 191 | u32 tmp; |
| 192 | int fd; |
| 193 | |
| 194 | di = clib_mem_alloc (sizeof (vlib_pci_device_info_t)); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 195 | clib_memset (di, 0, sizeof (vlib_pci_device_info_t)); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 196 | di->addr.as_u32 = addr->as_u32; |
| 197 | |
| 198 | u8 *dev_dir_name = format (0, "%s/%U", sysfs_pci_dev_path, |
| 199 | format_vlib_pci_addr, addr); |
| 200 | |
| 201 | f = format (0, "%v/config%c", dev_dir_name, 0); |
| 202 | fd = open ((char *) f, O_RDWR); |
| 203 | |
| 204 | /* Try read-only access if write fails. */ |
| 205 | if (fd < 0) |
| 206 | fd = open ((char *) f, O_RDONLY); |
| 207 | |
| 208 | if (fd < 0) |
| 209 | { |
| 210 | err = clib_error_return_unix (0, "open `%s'", f); |
| 211 | goto error; |
| 212 | } |
| 213 | |
| 214 | /* You can only read more that 64 bytes of config space as root; so we try to |
| 215 | read the full space but fall back to just the first 64 bytes. */ |
Damjan Marion | 44bcc20 | 2018-03-04 16:44:26 +0100 | [diff] [blame] | 216 | if (read (fd, &di->config_data, sizeof (di->config_data)) < |
| 217 | sizeof (di->config0)) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 218 | { |
| 219 | err = clib_error_return_unix (0, "read `%s'", f); |
| 220 | close (fd); |
| 221 | goto error; |
| 222 | } |
| 223 | |
| 224 | { |
| 225 | static pci_config_header_t all_ones; |
| 226 | if (all_ones.vendor_id == 0) |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 227 | clib_memset (&all_ones, ~0, sizeof (all_ones)); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 228 | |
| 229 | if (!memcmp (&di->config0.header, &all_ones, sizeof (all_ones))) |
| 230 | { |
| 231 | err = clib_error_return (0, "invalid PCI config for `%s'", f); |
| 232 | close (fd); |
| 233 | goto error; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | if (di->config0.header.header_type == 0) |
| 238 | pci_config_type0_little_to_host (&di->config0); |
| 239 | else |
| 240 | pci_config_type1_little_to_host (&di->config1); |
| 241 | |
| 242 | di->numa_node = -1; |
| 243 | vec_reset_length (f); |
| 244 | f = format (f, "%v/numa_node%c", dev_dir_name, 0); |
| 245 | err = clib_sysfs_read ((char *) f, "%u", &di->numa_node); |
| 246 | if (err) |
| 247 | { |
| 248 | di->numa_node = -1; |
| 249 | clib_error_free (err); |
| 250 | } |
| 251 | |
| 252 | vec_reset_length (f); |
| 253 | f = format (f, "%v/class%c", dev_dir_name, 0); |
| 254 | err = clib_sysfs_read ((char *) f, "0x%x", &tmp); |
| 255 | if (err) |
| 256 | goto error; |
| 257 | di->device_class = tmp >> 8; |
| 258 | |
| 259 | vec_reset_length (f); |
| 260 | f = format (f, "%v/vendor%c", dev_dir_name, 0); |
| 261 | err = clib_sysfs_read ((char *) f, "0x%x", &tmp); |
| 262 | if (err) |
| 263 | goto error; |
| 264 | di->vendor_id = tmp; |
| 265 | |
| 266 | vec_reset_length (f); |
| 267 | f = format (f, "%v/device%c", dev_dir_name, 0); |
| 268 | err = clib_sysfs_read ((char *) f, "0x%x", &tmp); |
| 269 | if (err) |
| 270 | goto error; |
| 271 | di->device_id = tmp; |
| 272 | |
| 273 | vec_reset_length (f); |
| 274 | f = format (f, "%v/driver%c", dev_dir_name, 0); |
| 275 | di->driver_name = clib_sysfs_link_to_name ((char *) f); |
| 276 | |
| 277 | di->iommu_group = -1; |
Damjan Marion | 1ba0fa4 | 2018-03-04 17:19:08 +0100 | [diff] [blame] | 278 | if (lvm->container_fd != -1) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 279 | { |
| 280 | u8 *tmpstr; |
| 281 | vec_reset_length (f); |
| 282 | f = format (f, "%v/iommu_group%c", dev_dir_name, 0); |
| 283 | tmpstr = clib_sysfs_link_to_name ((char *) f); |
| 284 | if (tmpstr) |
| 285 | { |
| 286 | di->iommu_group = atoi ((char *) tmpstr); |
| 287 | vec_free (tmpstr); |
| 288 | } |
Damjan Marion | 20ba164 | 2018-03-26 15:35:33 +0200 | [diff] [blame] | 289 | vec_reset_length (f); |
| 290 | f = format (f, "%v/iommu_group/name%c", dev_dir_name, 0); |
| 291 | err = clib_sysfs_read ((char *) f, "%s", &tmpstr); |
| 292 | if (err == 0) |
| 293 | { |
| 294 | if (strncmp ((char *) tmpstr, "vfio-noiommu", 12) == 0) |
| 295 | di->flags |= VLIB_PCI_DEVICE_INFO_F_NOIOMMU; |
| 296 | vec_free (tmpstr); |
| 297 | } |
| 298 | else |
| 299 | clib_error_free (err); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 300 | } |
| 301 | |
Damjan Marion | 9650418 | 2017-12-10 23:54:46 +0100 | [diff] [blame] | 302 | close (fd); |
| 303 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 304 | vec_reset_length (f); |
| 305 | f = format (f, "%v/vpd%c", dev_dir_name, 0); |
| 306 | fd = open ((char *) f, O_RDONLY); |
| 307 | if (fd >= 0) |
| 308 | { |
| 309 | while (1) |
| 310 | { |
| 311 | u8 tag[3]; |
| 312 | u8 *data = 0; |
Damjan Marion | 9650418 | 2017-12-10 23:54:46 +0100 | [diff] [blame] | 313 | uword len; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 314 | |
| 315 | if (read (fd, &tag, 3) != 3) |
| 316 | break; |
| 317 | |
| 318 | if (tag[0] != 0x82 && tag[0] != 0x90 && tag[0] != 0x91) |
| 319 | break; |
| 320 | |
| 321 | len = (tag[2] << 8) | tag[1]; |
| 322 | vec_validate (data, len); |
| 323 | |
| 324 | if (read (fd, data, len) != len) |
| 325 | { |
| 326 | vec_free (data); |
| 327 | break; |
| 328 | } |
| 329 | if (tag[0] == 0x82) |
| 330 | di->product_name = data; |
| 331 | else if (tag[0] == 0x90) |
| 332 | di->vpd_r = data; |
| 333 | else if (tag[0] == 0x91) |
| 334 | di->vpd_w = data; |
| 335 | |
| 336 | data = 0; |
| 337 | } |
| 338 | close (fd); |
| 339 | } |
| 340 | |
| 341 | goto done; |
| 342 | |
| 343 | error: |
| 344 | vlib_pci_free_device_info (di); |
| 345 | di = 0; |
| 346 | |
| 347 | done: |
| 348 | vec_free (f); |
| 349 | vec_free (dev_dir_name); |
| 350 | if (error) |
| 351 | *error = err; |
| 352 | else |
| 353 | clib_error_free (err); |
| 354 | return di; |
| 355 | } |
| 356 | |
Damjan Marion | 2752b89 | 2017-12-11 15:55:56 +0100 | [diff] [blame] | 357 | static int |
| 358 | directory_exists (char *path) |
| 359 | { |
| 360 | struct stat s = { 0 }; |
| 361 | if (stat (path, &s) == -1) |
| 362 | return 0; |
| 363 | |
| 364 | return S_ISDIR (s.st_mode); |
| 365 | } |
| 366 | |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 367 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 368 | vlib_pci_bind_to_uio (vlib_main_t * vm, vlib_pci_addr_t * addr, |
| 369 | char *uio_drv_name) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 370 | { |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 371 | clib_error_t *error = 0; |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 372 | u8 *s = 0, *driver_name = 0; |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 373 | DIR *dir = 0; |
| 374 | struct dirent *e; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 375 | vlib_pci_device_info_t *di; |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 376 | int fd, clear_driver_override = 0; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 377 | u8 *dev_dir_name = format (0, "%s/%U", sysfs_pci_dev_path, |
| 378 | format_vlib_pci_addr, addr); |
| 379 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 380 | di = vlib_pci_get_device_info (vm, addr, &error); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 381 | |
| 382 | if (error) |
| 383 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 384 | |
Damjan Marion | 2752b89 | 2017-12-11 15:55:56 +0100 | [diff] [blame] | 385 | if (strncmp ("auto", uio_drv_name, 5) == 0) |
| 386 | { |
| 387 | int vfio_pci_loaded = 0; |
| 388 | |
| 389 | if (directory_exists ("/sys/module/vfio_pci")) |
| 390 | vfio_pci_loaded = 1; |
| 391 | |
| 392 | if (di->iommu_group != -1) |
| 393 | { |
| 394 | /* device is bound to IOMMU group */ |
| 395 | if (!vfio_pci_loaded) |
| 396 | { |
| 397 | error = clib_error_return (0, "Skipping PCI device %U: device " |
| 398 | "is bound to IOMMU group and " |
| 399 | "vfio-pci driver is not loaded", |
| 400 | format_vlib_pci_addr, addr); |
| 401 | goto done; |
| 402 | } |
| 403 | else |
| 404 | uio_drv_name = "vfio-pci"; |
| 405 | } |
| 406 | else |
| 407 | { |
| 408 | /* device is not bound to IOMMU group so we have multiple options */ |
| 409 | if (vfio_pci_loaded && |
| 410 | (error = clib_sysfs_write (sysfs_mod_vfio_noiommu, "Y")) == 0) |
| 411 | uio_drv_name = "vfio-pci"; |
| 412 | else if (directory_exists ("/sys/module/uio_pci_generic")) |
| 413 | uio_drv_name = "uio_pci_generic"; |
| 414 | else if (directory_exists ("/sys/module/igb_uio")) |
| 415 | uio_drv_name = "igb_uio"; |
| 416 | else |
| 417 | { |
| 418 | clib_error_free (error); |
| 419 | error = clib_error_return (0, "Skipping PCI device %U: missing " |
| 420 | "kernel VFIO or UIO driver", |
| 421 | format_vlib_pci_addr, addr); |
| 422 | goto done; |
| 423 | } |
| 424 | clib_error_free (error); |
| 425 | } |
| 426 | } |
| 427 | |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 428 | s = format (s, "%v/driver%c", dev_dir_name, 0); |
Damjan Marion | 01914ce | 2017-09-14 19:04:50 +0200 | [diff] [blame] | 429 | driver_name = clib_sysfs_link_to_name ((char *) s); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 430 | vec_reset_length (s); |
| 431 | |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 432 | if (driver_name && |
| 433 | ((strcmp ("vfio-pci", (char *) driver_name) == 0) || |
| 434 | (strcmp ("uio_pci_generic", (char *) driver_name) == 0) || |
| 435 | (strcmp ("igb_uio", (char *) driver_name) == 0))) |
Damjan Marion | 3c785e0 | 2017-05-08 18:37:54 +0200 | [diff] [blame] | 436 | goto done; |
Damjan Marion | 3c785e0 | 2017-05-08 18:37:54 +0200 | [diff] [blame] | 437 | |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 438 | /* walk trough all linux interfaces and if interface belonging to |
| 439 | this device is founf check if interface is admin up */ |
| 440 | dir = opendir ("/sys/class/net"); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 441 | s = format (s, "%U%c", format_vlib_pci_addr, addr, 0); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 442 | |
| 443 | if (!dir) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 444 | { |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 445 | error = clib_error_return (0, "Skipping PCI device %U: failed to " |
| 446 | "read /sys/class/net", |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 447 | format_vlib_pci_addr, addr); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 448 | goto done; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 449 | } |
| 450 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 451 | fd = socket (PF_INET, SOCK_DGRAM, 0); |
Chris Luke | 370e9e3 | 2016-07-07 11:01:17 -0400 | [diff] [blame] | 452 | if (fd < 0) |
| 453 | { |
| 454 | error = clib_error_return_unix (0, "socket"); |
| 455 | goto done; |
| 456 | } |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 457 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 458 | while ((e = readdir (dir))) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 459 | { |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 460 | struct ifreq ifr; |
| 461 | struct ethtool_drvinfo drvinfo; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 462 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 463 | if (e->d_name[0] == '.') /* skip . and .. */ |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 464 | continue; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 465 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 466 | clib_memset (&ifr, 0, sizeof ifr); |
| 467 | clib_memset (&drvinfo, 0, sizeof drvinfo); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 468 | ifr.ifr_data = (char *) &drvinfo; |
Marco Varlese | 99d7a72 | 2018-06-27 09:54:44 +0200 | [diff] [blame] | 469 | strncpy (ifr.ifr_name, e->d_name, sizeof (ifr.ifr_name)); |
| 470 | ifr.ifr_name[ARRAY_LEN (ifr.ifr_name) - 1] = '\0'; |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 471 | drvinfo.cmd = ETHTOOL_GDRVINFO; |
Chris Luke | 370e9e3 | 2016-07-07 11:01:17 -0400 | [diff] [blame] | 472 | if (ioctl (fd, SIOCETHTOOL, &ifr) < 0) |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 473 | { |
John Lo | e282121 | 2016-07-13 18:13:02 -0400 | [diff] [blame] | 474 | /* Some interfaces (eg "lo") don't support this ioctl */ |
| 475 | if ((errno != ENOTSUP) && (errno != ENODEV)) |
Ed Warnicke | 853e720 | 2016-08-12 11:42:26 -0700 | [diff] [blame] | 476 | clib_unix_warning ("ioctl fetch intf %s bus info error", |
| 477 | e->d_name); |
John Lo | e282121 | 2016-07-13 18:13:02 -0400 | [diff] [blame] | 478 | continue; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 479 | } |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 480 | |
| 481 | if (strcmp ((char *) s, drvinfo.bus_info)) |
| 482 | continue; |
| 483 | |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 484 | clib_memset (&ifr, 0, sizeof (ifr)); |
Marco Varlese | 99d7a72 | 2018-06-27 09:54:44 +0200 | [diff] [blame] | 485 | strncpy (ifr.ifr_name, e->d_name, sizeof (ifr.ifr_name)); |
| 486 | ifr.ifr_name[ARRAY_LEN (ifr.ifr_name) - 1] = '\0'; |
Chris Luke | 370e9e3 | 2016-07-07 11:01:17 -0400 | [diff] [blame] | 487 | if (ioctl (fd, SIOCGIFFLAGS, &ifr) < 0) |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 488 | { |
| 489 | error = clib_error_return_unix (0, "ioctl fetch intf %s flags", |
| 490 | e->d_name); |
| 491 | close (fd); |
| 492 | goto done; |
| 493 | } |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 494 | |
| 495 | if (ifr.ifr_flags & IFF_UP) |
| 496 | { |
| 497 | error = clib_error_return (0, "Skipping PCI device %U as host " |
| 498 | "interface %s is up", |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 499 | format_vlib_pci_addr, addr, e->d_name); |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 500 | close (fd); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 501 | goto done; |
| 502 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 503 | } |
| 504 | |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 505 | close (fd); |
| 506 | vec_reset_length (s); |
| 507 | |
| 508 | s = format (s, "%v/driver/unbind%c", dev_dir_name, 0); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 509 | clib_sysfs_write ((char *) s, "%U", format_vlib_pci_addr, addr); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 510 | vec_reset_length (s); |
| 511 | |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 512 | s = format (s, "%v/driver_override%c", dev_dir_name, 0); |
| 513 | if (access ((char *) s, F_OK) == 0) |
| 514 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 515 | clib_sysfs_write ((char *) s, "%s", uio_drv_name); |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 516 | clear_driver_override = 1; |
| 517 | } |
| 518 | else |
| 519 | { |
| 520 | vec_reset_length (s); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 521 | s = format (s, "%s/%s/new_id%c", sysfs_pci_drv_path, uio_drv_name, 0); |
| 522 | clib_sysfs_write ((char *) s, "0x%04x 0x%04x", di->vendor_id, |
| 523 | di->device_id); |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 524 | } |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 525 | vec_reset_length (s); |
| 526 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 527 | s = format (s, "%s/%s/bind%c", sysfs_pci_drv_path, uio_drv_name, 0); |
| 528 | clib_sysfs_write ((char *) s, "%U", format_vlib_pci_addr, addr); |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 529 | vec_reset_length (s); |
| 530 | |
| 531 | if (clear_driver_override) |
| 532 | { |
| 533 | s = format (s, "%v/driver_override%c", dev_dir_name, 0); |
Damjan Marion | 01914ce | 2017-09-14 19:04:50 +0200 | [diff] [blame] | 534 | clib_sysfs_write ((char *) s, "%c", 0); |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 535 | vec_reset_length (s); |
| 536 | } |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 537 | |
| 538 | done: |
| 539 | closedir (dir); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 540 | vec_free (s); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 541 | vec_free (dev_dir_name); |
Damjan Marion | a7f7457 | 2017-05-23 18:32:21 +0200 | [diff] [blame] | 542 | vec_free (driver_name); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 543 | return error; |
| 544 | } |
| 545 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 546 | |
| 547 | static clib_error_t * |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 548 | scan_uio_dir (void *arg, u8 * path_name, u8 * file_name) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 549 | { |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 550 | linux_pci_device_t *l = arg; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 551 | unformat_input_t input; |
| 552 | |
| 553 | unformat_init_string (&input, (char *) file_name, vec_len (file_name)); |
| 554 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 555 | if (!unformat (&input, "uio%d", &l->uio_minor)) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 556 | abort (); |
| 557 | |
| 558 | unformat_free (&input); |
| 559 | return 0; |
| 560 | } |
| 561 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 562 | static clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 563 | vfio_set_irqs (vlib_main_t * vm, linux_pci_device_t * p, u32 index, u32 start, |
| 564 | u32 count, u32 flags, int *efds) |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 565 | { |
| 566 | int data_len = efds ? count * sizeof (int) : 0; |
| 567 | u8 buf[sizeof (struct vfio_irq_set) + data_len]; |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 568 | struct vfio_irq_info ii = { 0 }; |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 569 | struct vfio_irq_set *irq_set = (struct vfio_irq_set *) buf; |
| 570 | |
| 571 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 572 | ii.argsz = sizeof (struct vfio_irq_info); |
| 573 | ii.index = index; |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 574 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 575 | if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &ii) < 0) |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 576 | return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_IRQ_INFO) " |
| 577 | "'%U'", format_vlib_pci_addr, &p->addr); |
| 578 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 579 | pci_log_debug (vm, p, "%s index:%u count:%u flags: %s%s%s%s(0x%x)", |
| 580 | __func__, ii.index, ii.count, |
| 581 | ii.flags & VFIO_IRQ_INFO_EVENTFD ? "eventfd " : "", |
| 582 | ii.flags & VFIO_IRQ_INFO_MASKABLE ? "maskable " : "", |
| 583 | ii.flags & VFIO_IRQ_INFO_AUTOMASKED ? "automasked " : "", |
| 584 | ii.flags & VFIO_IRQ_INFO_NORESIZE ? "noresize " : "", |
| 585 | ii.flags); |
| 586 | |
| 587 | if (ii.count < start + count) |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 588 | return clib_error_return_unix (0, "vfio_set_irq: unexistng interrupt on " |
| 589 | "'%U'", format_vlib_pci_addr, &p->addr); |
| 590 | |
| 591 | |
| 592 | if (efds) |
| 593 | { |
| 594 | flags |= VFIO_IRQ_SET_DATA_EVENTFD; |
Dave Barach | 178cf49 | 2018-11-13 16:34:13 -0500 | [diff] [blame] | 595 | clib_memcpy_fast (&irq_set->data, efds, data_len); |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 596 | } |
| 597 | else |
| 598 | flags |= VFIO_IRQ_SET_DATA_NONE; |
| 599 | |
| 600 | ASSERT ((flags & (VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_DATA_EVENTFD)) != |
| 601 | (VFIO_IRQ_SET_DATA_NONE | VFIO_IRQ_SET_DATA_EVENTFD)); |
| 602 | |
| 603 | irq_set->argsz = sizeof (struct vfio_irq_set) + data_len; |
| 604 | irq_set->index = index; |
| 605 | irq_set->start = start; |
| 606 | irq_set->count = count; |
| 607 | irq_set->flags = flags; |
| 608 | |
| 609 | if (ioctl (p->fd, VFIO_DEVICE_SET_IRQS, irq_set) < 0) |
| 610 | return clib_error_return_unix (0, "%U:ioctl(VFIO_DEVICE_SET_IRQS) " |
| 611 | "[index = %u, start = %u, count = %u, " |
| 612 | "flags = 0x%x]", |
| 613 | format_vlib_pci_addr, &p->addr, |
| 614 | index, start, count, flags); |
| 615 | return 0; |
| 616 | } |
| 617 | |
| 618 | static clib_error_t * |
Damjan Marion | 56dd543 | 2017-09-08 19:52:02 +0200 | [diff] [blame] | 619 | linux_pci_uio_read_ready (clib_file_t * uf) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 620 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 621 | vlib_main_t *vm = vlib_get_main (); |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 622 | int __attribute__ ((unused)) rv; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 623 | vlib_pci_dev_handle_t h = uf->private_data; |
| 624 | linux_pci_device_t *p = linux_pci_get_device (h); |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 625 | linux_pci_irq_t *irq = &p->intx_irq; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 626 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 627 | u32 icount; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 628 | rv = read (uf->file_descriptor, &icount, 4); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 629 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 630 | if (irq->intx_handler) |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 631 | irq->intx_handler (vm, h); |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 632 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 633 | vlib_pci_intr_enable (vm, h); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 634 | |
| 635 | return /* no error */ 0; |
| 636 | } |
| 637 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 638 | static clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 639 | linux_pci_vfio_unmask_intx (vlib_main_t * vm, linux_pci_device_t * d) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 640 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 641 | return vfio_set_irqs (vm, d, VFIO_PCI_INTX_IRQ_INDEX, 0, 1, |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 642 | VFIO_IRQ_SET_ACTION_UNMASK, 0); |
| 643 | } |
| 644 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 645 | static clib_error_t * |
Damjan Marion | 56dd543 | 2017-09-08 19:52:02 +0200 | [diff] [blame] | 646 | linux_pci_uio_error_ready (clib_file_t * uf) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 647 | { |
| 648 | u32 error_index = (u32) uf->private_data; |
| 649 | |
| 650 | return clib_error_return (0, "pci device %d: error", error_index); |
| 651 | } |
| 652 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 653 | static clib_error_t * |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 654 | linux_pci_vfio_msix_read_ready (clib_file_t * uf) |
| 655 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 656 | vlib_main_t *vm = vlib_get_main (); |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 657 | int __attribute__ ((unused)) rv; |
| 658 | vlib_pci_dev_handle_t h = uf->private_data >> 16; |
| 659 | u16 line = uf->private_data & 0xffff; |
| 660 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 661 | linux_pci_irq_t *irq = vec_elt_at_index (p->msix_irqs, line); |
| 662 | |
| 663 | u64 icount; |
| 664 | rv = read (uf->file_descriptor, &icount, sizeof (icount)); |
| 665 | |
| 666 | if (irq->msix_handler) |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 667 | irq->msix_handler (vm, h, line); |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 668 | |
| 669 | return /* no error */ 0; |
| 670 | } |
| 671 | |
| 672 | static clib_error_t * |
| 673 | linux_pci_vfio_intx_read_ready (clib_file_t * uf) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 674 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 675 | vlib_main_t *vm = vlib_get_main (); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 676 | int __attribute__ ((unused)) rv; |
| 677 | vlib_pci_dev_handle_t h = uf->private_data; |
| 678 | linux_pci_device_t *p = linux_pci_get_device (h); |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 679 | linux_pci_irq_t *irq = &p->intx_irq; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 680 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 681 | u64 icount; |
| 682 | rv = read (uf->file_descriptor, &icount, sizeof (icount)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 683 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 684 | if (irq->intx_handler) |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 685 | irq->intx_handler (vm, h); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 686 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 687 | linux_pci_vfio_unmask_intx (vm, p); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 688 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 689 | return /* no error */ 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 690 | } |
| 691 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 692 | static clib_error_t * |
| 693 | linux_pci_vfio_error_ready (clib_file_t * uf) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 694 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 695 | u32 error_index = (u32) uf->private_data; |
| 696 | |
| 697 | return clib_error_return (0, "pci device %d: error", error_index); |
| 698 | } |
| 699 | |
| 700 | static clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 701 | add_device_uio (vlib_main_t * vm, linux_pci_device_t * p, |
| 702 | vlib_pci_device_info_t * di, pci_device_registration_t * r) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 703 | { |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 704 | linux_pci_main_t *lpm = &linux_pci_main; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 705 | clib_error_t *err = 0; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 706 | u8 *s = 0; |
| 707 | |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 708 | p->fd = -1; |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 709 | p->type = LINUX_PCI_DEVICE_TYPE_UIO; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 710 | |
| 711 | s = format (s, "%s/%U/config%c", sysfs_pci_dev_path, |
| 712 | format_vlib_pci_addr, &di->addr, 0); |
| 713 | |
| 714 | p->config_fd = open ((char *) s, O_RDWR); |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 715 | p->config_offset = 0; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 716 | vec_reset_length (s); |
| 717 | |
| 718 | if (p->config_fd == -1) |
| 719 | { |
| 720 | err = clib_error_return_unix (0, "open '%s'", s); |
| 721 | goto error; |
| 722 | } |
| 723 | |
| 724 | s = format (0, "%s/%U/uio", sysfs_pci_dev_path, |
| 725 | format_vlib_pci_addr, &di->addr); |
| 726 | foreach_directory_file ((char *) s, scan_uio_dir, p, /* scan_dirs */ |
| 727 | 1); |
| 728 | vec_reset_length (s); |
| 729 | |
| 730 | s = format (s, "/dev/uio%d%c", p->uio_minor, 0); |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 731 | p->fd = open ((char *) s, O_RDWR); |
| 732 | if (p->fd < 0) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 733 | { |
| 734 | err = clib_error_return_unix (0, "open '%s'", s); |
| 735 | goto error; |
| 736 | } |
| 737 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 738 | if (r && r->interrupt_handler) |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 739 | vlib_pci_register_intx_handler (vm, p->handle, r->interrupt_handler); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 740 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 741 | if (r && r->init_function) |
| 742 | err = r->init_function (lpm->vlib_main, p->handle); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 743 | |
| 744 | error: |
Damjan Marion | 20ba164 | 2018-03-26 15:35:33 +0200 | [diff] [blame] | 745 | vec_free (s); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 746 | if (err) |
| 747 | { |
Damjan Marion | 9650418 | 2017-12-10 23:54:46 +0100 | [diff] [blame] | 748 | if (p->config_fd != -1) |
| 749 | close (p->config_fd); |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 750 | if (p->fd != -1) |
| 751 | close (p->fd); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 752 | } |
| 753 | return err; |
| 754 | } |
| 755 | |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 756 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 757 | vlib_pci_register_intx_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 758 | pci_intx_handler_function_t * intx_handler) |
| 759 | { |
| 760 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 761 | clib_file_t t = { 0 }; |
| 762 | linux_pci_irq_t *irq = &p->intx_irq; |
| 763 | ASSERT (irq->fd == -1); |
| 764 | |
| 765 | if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO) |
| 766 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 767 | struct vfio_irq_info ii = { 0 }; |
| 768 | ii.argsz = sizeof (struct vfio_irq_info); |
| 769 | ii.index = VFIO_PCI_INTX_IRQ_INDEX; |
| 770 | if (ioctl (p->fd, VFIO_DEVICE_GET_IRQ_INFO, &ii) < 0) |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 771 | return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_IRQ_INFO) '" |
| 772 | "%U'", format_vlib_pci_addr, &p->addr); |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 773 | pci_log_debug (vm, p, "%s index:%u count:%u flags: %s%s%s%s(0x%x)", |
| 774 | __func__, ii.index, ii.count, |
| 775 | ii.flags & VFIO_IRQ_INFO_EVENTFD ? "eventfd " : "", |
| 776 | ii.flags & VFIO_IRQ_INFO_MASKABLE ? "maskable " : "", |
| 777 | ii.flags & VFIO_IRQ_INFO_AUTOMASKED ? "automasked " : "", |
| 778 | ii.flags & VFIO_IRQ_INFO_NORESIZE ? "noresize " : "", |
| 779 | ii.flags); |
| 780 | if (ii.count != 1) |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 781 | return clib_error_return (0, "INTx interrupt does not exist on device" |
| 782 | "'%U'", format_vlib_pci_addr, &p->addr); |
| 783 | |
| 784 | irq->fd = eventfd (0, EFD_NONBLOCK); |
| 785 | if (irq->fd == -1) |
| 786 | return clib_error_return_unix (0, "eventfd"); |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 787 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 788 | t.file_descriptor = irq->fd; |
| 789 | t.read_function = linux_pci_vfio_intx_read_ready; |
| 790 | } |
| 791 | else if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) |
| 792 | { |
| 793 | t.file_descriptor = p->fd; |
| 794 | t.read_function = linux_pci_uio_read_ready; |
| 795 | } |
| 796 | else |
| 797 | return 0; |
| 798 | |
| 799 | t.error_function = linux_pci_uio_error_ready; |
| 800 | t.private_data = p->handle; |
| 801 | t.description = format (0, "PCI %U INTx", format_vlib_pci_addr, &p->addr); |
| 802 | irq->clib_file_index = clib_file_add (&file_main, &t); |
| 803 | irq->intx_handler = intx_handler; |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 808 | vlib_pci_register_msix_handler (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 809 | u32 start, u32 count, |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 810 | pci_msix_handler_function_t * msix_handler) |
| 811 | { |
| 812 | clib_error_t *err = 0; |
| 813 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 814 | u32 i; |
| 815 | |
| 816 | if (p->type != LINUX_PCI_DEVICE_TYPE_VFIO) |
| 817 | return clib_error_return (0, "vfio driver is needed for MSI-X interrupt " |
| 818 | "support"); |
| 819 | |
| 820 | /* *INDENT-OFF* */ |
| 821 | vec_validate_init_empty (p->msix_irqs, start + count - 1, (linux_pci_irq_t) |
| 822 | { .fd = -1}); |
| 823 | /* *INDENT-ON* */ |
| 824 | |
| 825 | for (i = start; i < start + count; i++) |
| 826 | { |
| 827 | clib_file_t t = { 0 }; |
| 828 | linux_pci_irq_t *irq = vec_elt_at_index (p->msix_irqs, i); |
| 829 | ASSERT (irq->fd == -1); |
| 830 | |
| 831 | irq->fd = eventfd (0, EFD_NONBLOCK); |
| 832 | if (irq->fd == -1) |
| 833 | { |
| 834 | err = clib_error_return_unix (0, "eventfd"); |
| 835 | goto error; |
| 836 | } |
| 837 | |
| 838 | t.read_function = linux_pci_vfio_msix_read_ready; |
| 839 | t.file_descriptor = irq->fd; |
| 840 | t.error_function = linux_pci_vfio_error_ready; |
| 841 | t.private_data = p->handle << 16 | i; |
| 842 | t.description = format (0, "PCI %U MSI-X #%u", format_vlib_pci_addr, |
| 843 | &p->addr, i); |
| 844 | irq->clib_file_index = clib_file_add (&file_main, &t); |
| 845 | irq->msix_handler = msix_handler; |
| 846 | } |
| 847 | |
| 848 | return 0; |
| 849 | |
| 850 | error: |
| 851 | while (i-- > start) |
| 852 | { |
| 853 | linux_pci_irq_t *irq = vec_elt_at_index (p->msix_irqs, i); |
| 854 | if (irq->fd != -1) |
| 855 | { |
| 856 | clib_file_del_by_index (&file_main, irq->clib_file_index); |
| 857 | close (irq->fd); |
| 858 | irq->fd = -1; |
| 859 | } |
| 860 | } |
| 861 | return err; |
| 862 | } |
| 863 | |
| 864 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 865 | vlib_pci_enable_msix_irq (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 866 | u16 start, u16 count) |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 867 | { |
| 868 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 869 | int fds[count]; |
| 870 | int i; |
| 871 | |
| 872 | if (p->type != LINUX_PCI_DEVICE_TYPE_VFIO) |
| 873 | return clib_error_return (0, "vfio driver is needed for MSI-X interrupt " |
| 874 | "support"); |
| 875 | |
| 876 | for (i = start; i < start + count; i++) |
| 877 | { |
| 878 | linux_pci_irq_t *irq = vec_elt_at_index (p->msix_irqs, i); |
| 879 | fds[i] = irq->fd; |
| 880 | } |
| 881 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 882 | return vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, start, count, |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 883 | VFIO_IRQ_SET_ACTION_TRIGGER, fds); |
| 884 | } |
| 885 | |
| 886 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 887 | vlib_pci_disable_msix_irq (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 888 | u16 start, u16 count) |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 889 | { |
| 890 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 891 | int i, fds[count]; |
| 892 | |
| 893 | if (p->type != LINUX_PCI_DEVICE_TYPE_VFIO) |
| 894 | return clib_error_return (0, "vfio driver is needed for MSI-X interrupt " |
| 895 | "support"); |
| 896 | |
| 897 | for (i = start; i < start + count; i++) |
| 898 | fds[i] = -1; |
| 899 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 900 | return vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, start, count, |
Damjan Marion | 599a16b | 2018-03-04 19:35:23 +0100 | [diff] [blame] | 901 | VFIO_IRQ_SET_ACTION_TRIGGER, fds); |
| 902 | } |
| 903 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 904 | static clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 905 | add_device_vfio (vlib_main_t * vm, linux_pci_device_t * p, |
| 906 | vlib_pci_device_info_t * di, pci_device_registration_t * r) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 907 | { |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 908 | linux_pci_main_t *lpm = &linux_pci_main; |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 909 | struct vfio_device_info device_info = { 0 }; |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 910 | struct vfio_region_info reg = { 0 }; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 911 | clib_error_t *err = 0; |
| 912 | u8 *s = 0; |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 913 | int is_noiommu; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 914 | |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 915 | p->type = LINUX_PCI_DEVICE_TYPE_VFIO; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 916 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 917 | if ((err = linux_vfio_group_get_device_fd (&p->addr, &p->fd, &is_noiommu))) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 918 | return err; |
| 919 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 920 | if (is_noiommu == 0) |
| 921 | p->supports_va_dma = 1; |
| 922 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 923 | device_info.argsz = sizeof (device_info); |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 924 | if (ioctl (p->fd, VFIO_DEVICE_GET_INFO, &device_info) < 0) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 925 | { |
| 926 | err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) '%U'", |
| 927 | format_vlib_pci_addr, &di->addr); |
| 928 | goto error; |
| 929 | } |
| 930 | |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 931 | reg.argsz = sizeof (struct vfio_region_info); |
| 932 | reg.index = VFIO_PCI_CONFIG_REGION_INDEX; |
| 933 | if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, ®) < 0) |
| 934 | { |
| 935 | err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) '%U'", |
| 936 | format_vlib_pci_addr, &di->addr); |
| 937 | goto error; |
| 938 | } |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 939 | |
| 940 | pci_log_debug (vm, p, "%s region_info index:%u size:0x%lx offset:0x%lx " |
| 941 | "flags: %s%s%s(0x%x)", __func__, |
| 942 | reg.index, reg.size, reg.offset, |
| 943 | reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "", |
| 944 | reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "", |
| 945 | reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "", |
| 946 | reg.flags); |
| 947 | |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 948 | p->config_offset = reg.offset; |
| 949 | p->config_fd = p->fd; |
| 950 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 951 | /* reset if device supports it */ |
| 952 | if (device_info.flags & VFIO_DEVICE_FLAGS_RESET) |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 953 | if (ioctl (p->fd, VFIO_DEVICE_RESET) < 0) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 954 | { |
| 955 | err = clib_error_return_unix (0, "ioctl(VFIO_DEVICE_RESET) '%U'", |
| 956 | format_vlib_pci_addr, &di->addr); |
| 957 | goto error; |
| 958 | } |
| 959 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 960 | if (r && r->interrupt_handler) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 961 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 962 | vlib_pci_register_intx_handler (vm, p->handle, r->interrupt_handler); |
| 963 | linux_pci_vfio_unmask_intx (vm, p); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 964 | } |
| 965 | |
Damjan Marion | 68b4da6 | 2018-09-30 18:26:20 +0200 | [diff] [blame] | 966 | if (p->supports_va_dma) |
| 967 | { |
| 968 | vlib_buffer_pool_t *bp; |
| 969 | /* *INDENT-OFF* */ |
| 970 | vec_foreach (bp, buffer_main.buffer_pools) |
| 971 | { |
| 972 | u32 i; |
| 973 | vlib_physmem_map_t *pm; |
| 974 | pm = vlib_physmem_get_map (vm, bp->physmem_map_index); |
| 975 | for (i = 0; i < pm->n_pages; i++) |
| 976 | vfio_map_physmem_page (vm, pm->base + (i << pm->log2_page_size)); |
| 977 | } |
| 978 | /* *INDENT-ON* */ |
| 979 | } |
| 980 | |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 981 | if (r && r->init_function) |
| 982 | err = r->init_function (lpm->vlib_main, p->handle); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 983 | |
| 984 | error: |
| 985 | vec_free (s); |
| 986 | if (err) |
| 987 | { |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 988 | if (p->fd != -1) |
| 989 | close (p->fd); |
Chris Luke | 30684ac | 2018-03-29 12:56:58 -0700 | [diff] [blame] | 990 | if (p->config_fd != -1 && p->config_fd != p->fd) |
Damjan Marion | 9650418 | 2017-12-10 23:54:46 +0100 | [diff] [blame] | 991 | close (p->config_fd); |
Chris Luke | 30684ac | 2018-03-29 12:56:58 -0700 | [diff] [blame] | 992 | p->config_fd = p->fd = -1; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 993 | } |
| 994 | return err; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 995 | } |
| 996 | |
| 997 | /* Configuration space read/write. */ |
| 998 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 999 | vlib_pci_read_write_config (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 1000 | vlib_read_or_write_t read_or_write, |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1001 | uword address, void *data, u32 n_bytes) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1002 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1003 | linux_pci_device_t *p = linux_pci_get_device (h); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1004 | int n; |
| 1005 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1006 | if (read_or_write == VLIB_READ) |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 1007 | n = pread (p->config_fd, data, n_bytes, p->config_offset + address); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1008 | else |
Damjan Marion | f9a968e | 2018-02-25 23:26:22 +0100 | [diff] [blame] | 1009 | n = pwrite (p->config_fd, data, n_bytes, p->config_offset + address); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1010 | |
| 1011 | if (n != n_bytes) |
| 1012 | return clib_error_return_unix (0, "%s", |
| 1013 | read_or_write == VLIB_READ |
| 1014 | ? "read" : "write"); |
| 1015 | |
| 1016 | return 0; |
| 1017 | } |
| 1018 | |
| 1019 | static clib_error_t * |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1020 | vlib_pci_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 bar, int *fd, |
| 1021 | u64 * size, u64 * offset) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1022 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1023 | linux_pci_device_t *p = linux_pci_get_device (h); |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1024 | clib_error_t *error = 0; |
| 1025 | int _fd = -1; |
| 1026 | u64 _size = 0, _offset = 0; |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1027 | |
| 1028 | ASSERT (bar <= 5); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1029 | |
| 1030 | error = 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1031 | |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1032 | if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1033 | { |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1034 | u8 *file_name; |
| 1035 | struct stat stat_buf; |
| 1036 | file_name = format (0, "%s/%U/resource%d%c", sysfs_pci_dev_path, |
| 1037 | format_vlib_pci_addr, &p->addr, bar, 0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1038 | |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1039 | _fd = open ((char *) file_name, O_RDWR); |
| 1040 | if (_fd < 0) |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1041 | { |
| 1042 | error = clib_error_return_unix (0, "open `%s'", file_name); |
| 1043 | vec_free (file_name); |
| 1044 | return error; |
| 1045 | } |
| 1046 | |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1047 | if (fstat (_fd, &stat_buf) < 0) |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1048 | { |
| 1049 | error = clib_error_return_unix (0, "fstat `%s'", file_name); |
| 1050 | vec_free (file_name); |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1051 | close (_fd); |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1052 | return error; |
| 1053 | } |
| 1054 | |
| 1055 | vec_free (file_name); |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1056 | _size = stat_buf.st_size; |
| 1057 | _offset = 0; |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1058 | } |
| 1059 | else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1060 | { |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1061 | struct vfio_region_info reg = { 0 }; |
| 1062 | reg.argsz = sizeof (struct vfio_region_info); |
| 1063 | reg.index = bar; |
| 1064 | if (ioctl (p->fd, VFIO_DEVICE_GET_REGION_INFO, ®) < 0) |
| 1065 | return clib_error_return_unix (0, "ioctl(VFIO_DEVICE_GET_INFO) " |
| 1066 | "'%U'", format_vlib_pci_addr, |
| 1067 | &p->addr); |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1068 | _fd = p->fd; |
| 1069 | _size = reg.size; |
| 1070 | _offset = reg.offset; |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1071 | pci_log_debug (vm, p, "%s region_info index:%u size:0x%lx offset:0x%lx " |
| 1072 | "flags: %s%s%s(0x%x)", __func__, |
| 1073 | reg.index, reg.size, reg.offset, |
| 1074 | reg.flags & VFIO_REGION_INFO_FLAG_READ ? "rd " : "", |
| 1075 | reg.flags & VFIO_REGION_INFO_FLAG_WRITE ? "wr " : "", |
| 1076 | reg.flags & VFIO_REGION_INFO_FLAG_MMAP ? "mmap " : "", |
| 1077 | reg.flags); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1078 | } |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1079 | else |
| 1080 | ASSERT (0); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1081 | |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1082 | *fd = _fd; |
| 1083 | *size = _size; |
| 1084 | *offset = _offset; |
| 1085 | |
| 1086 | return error; |
| 1087 | } |
| 1088 | |
| 1089 | static clib_error_t * |
| 1090 | vlib_pci_map_region_int (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 1091 | u32 bar, u8 * addr, void **result) |
| 1092 | { |
| 1093 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1094 | int fd = -1; |
| 1095 | clib_error_t *error; |
| 1096 | int flags = MAP_SHARED; |
| 1097 | u64 size = 0, offset = 0; |
| 1098 | |
| 1099 | pci_log_debug (vm, p, "map region %u to va %p", bar, addr); |
| 1100 | |
| 1101 | if ((error = vlib_pci_region (vm, h, bar, &fd, &size, &offset))) |
| 1102 | return error; |
| 1103 | |
| 1104 | if (p->type == LINUX_PCI_DEVICE_TYPE_UIO && addr != 0) |
| 1105 | flags |= MAP_FIXED; |
| 1106 | |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1107 | *result = mmap (addr, size, PROT_READ | PROT_WRITE, flags, fd, offset); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1108 | if (*result == (void *) -1) |
| 1109 | { |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1110 | error = clib_error_return_unix (0, "mmap `BAR%u'", bar); |
| 1111 | if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1112 | close (fd); |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1113 | return error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1114 | } |
Damjan Marion | 2060db8 | 2018-03-04 17:37:15 +0100 | [diff] [blame] | 1115 | |
| 1116 | /* *INDENT-OFF* */ |
| 1117 | vec_validate_init_empty (p->regions, bar, |
| 1118 | (linux_pci_region_t) { .fd = -1}); |
| 1119 | /* *INDENT-ON* */ |
| 1120 | if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) |
| 1121 | p->regions[bar].fd = fd; |
| 1122 | p->regions[bar].addr = *result; |
| 1123 | p->regions[bar].size = size; |
| 1124 | return 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1128 | vlib_pci_map_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 resource, |
| 1129 | void **result) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1130 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1131 | return (vlib_pci_map_region_int (vm, h, resource, 0 /* addr */ , result)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1132 | } |
| 1133 | |
| 1134 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1135 | vlib_pci_map_region_fixed (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 1136 | u32 resource, u8 * addr, void **result) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1137 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1138 | return (vlib_pci_map_region_int (vm, h, resource, addr, result)); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1139 | } |
| 1140 | |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1141 | clib_error_t * |
Mohsin Kazmi | 95276ca | 2018-09-28 11:45:01 +0200 | [diff] [blame] | 1142 | vlib_pci_io_region (vlib_main_t * vm, vlib_pci_dev_handle_t h, u32 resource) |
| 1143 | { |
| 1144 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1145 | clib_error_t *error = 0; |
| 1146 | int fd = -1; |
| 1147 | u64 size = 0, offset = 0; |
| 1148 | |
| 1149 | if ((error = vlib_pci_region (vm, h, resource, &fd, &size, &offset))) |
| 1150 | return error; |
| 1151 | |
| 1152 | p->io_fd = fd; |
| 1153 | p->io_offset = offset; |
| 1154 | return error; |
| 1155 | } |
| 1156 | |
| 1157 | clib_error_t * |
| 1158 | vlib_pci_read_write_io (vlib_main_t * vm, vlib_pci_dev_handle_t h, |
| 1159 | vlib_read_or_write_t read_or_write, |
| 1160 | uword offset, void *data, u32 length) |
| 1161 | { |
| 1162 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1163 | int n = 0; |
| 1164 | |
| 1165 | if (read_or_write == VLIB_READ) |
| 1166 | n = pread (p->io_fd, data, length, p->io_offset + offset); |
| 1167 | else |
| 1168 | n = pwrite (p->io_fd, data, length, p->io_offset + offset); |
| 1169 | |
| 1170 | if (n != length) |
| 1171 | return clib_error_return_unix (0, "%s", |
| 1172 | read_or_write == VLIB_READ |
| 1173 | ? "read" : "write"); |
| 1174 | return 0; |
| 1175 | } |
| 1176 | |
| 1177 | clib_error_t * |
Damjan Marion | 68b4da6 | 2018-09-30 18:26:20 +0200 | [diff] [blame] | 1178 | vlib_pci_map_dma (vlib_main_t * vm, vlib_pci_dev_handle_t h, void *ptr) |
| 1179 | { |
| 1180 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1181 | |
| 1182 | if (!p->supports_va_dma) |
| 1183 | return 0; |
| 1184 | |
| 1185 | return vfio_map_physmem_page (vm, ptr); |
| 1186 | } |
| 1187 | |
| 1188 | int |
| 1189 | vlib_pci_supports_virtual_addr_dma (vlib_main_t * vm, vlib_pci_dev_handle_t h) |
| 1190 | { |
| 1191 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1192 | |
| 1193 | return p->supports_va_dma != 0; |
| 1194 | } |
| 1195 | |
| 1196 | clib_error_t * |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1197 | vlib_pci_device_open (vlib_main_t * vm, vlib_pci_addr_t * addr, |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1198 | pci_device_id_t ids[], vlib_pci_dev_handle_t * handle) |
| 1199 | { |
| 1200 | linux_pci_main_t *lpm = &linux_pci_main; |
| 1201 | vlib_pci_device_info_t *di; |
| 1202 | linux_pci_device_t *p; |
| 1203 | clib_error_t *err = 0; |
| 1204 | pci_device_id_t *i; |
| 1205 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1206 | di = vlib_pci_get_device_info (vm, addr, &err); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1207 | |
| 1208 | if (err) |
| 1209 | return err; |
| 1210 | for (i = ids; i->vendor_id != 0; i++) |
| 1211 | if (i->vendor_id == di->vendor_id && i->device_id == di->device_id) |
| 1212 | break; |
| 1213 | |
| 1214 | if (i->vendor_id == 0) |
| 1215 | return clib_error_return (0, "Wrong vendor or device id"); |
| 1216 | |
| 1217 | pool_get (lpm->linux_pci_devices, p); |
| 1218 | p->handle = p - lpm->linux_pci_devices; |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1219 | p->addr.as_u32 = di->addr.as_u32; |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1220 | p->intx_irq.fd = -1; |
Damjan Marion | d2bfb78 | 2019-01-07 20:56:04 +0100 | [diff] [blame^] | 1221 | p->numa_node = di->numa_node; |
Mohsin Kazmi | 3d3b955 | 2018-10-24 14:05:34 +0200 | [diff] [blame] | 1222 | /* |
| 1223 | * pci io bar read/write fd |
| 1224 | */ |
| 1225 | p->io_fd = -1; |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1226 | |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1227 | pci_log_debug (vm, p, "open vid:0x%04x did:0x%04x driver:%s iommu_group:%d", |
| 1228 | di->vendor_id, di->device_id, di->driver_name, |
| 1229 | di->iommu_group); |
| 1230 | |
| 1231 | if (strncmp ("vfio-pci", (char *) di->driver_name, 8) == 0) |
| 1232 | err = add_device_vfio (vm, p, di, 0); |
| 1233 | else if (strncmp ("uio_pci_generic", (char *) di->driver_name, 8) == 0) |
| 1234 | err = add_device_uio (vm, p, di, 0); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1235 | else |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1236 | err = clib_error_create ("device not bound to 'vfio-pci' or " |
| 1237 | "'uio_pci_generic' kernel module"); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1238 | if (err) |
| 1239 | goto error; |
| 1240 | |
| 1241 | *handle = p->handle; |
| 1242 | |
| 1243 | error: |
| 1244 | vlib_pci_free_device_info (di); |
| 1245 | if (err) |
| 1246 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1247 | pci_log_err (vm, p, "%U", format_clib_error, err); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 1248 | clib_memset (p, 0, sizeof (linux_pci_device_t)); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1249 | pool_put (lpm->linux_pci_devices, p); |
| 1250 | } |
| 1251 | |
| 1252 | return err; |
| 1253 | } |
| 1254 | |
| 1255 | void |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1256 | vlib_pci_device_close (vlib_main_t * vm, vlib_pci_dev_handle_t h) |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1257 | { |
| 1258 | linux_pci_main_t *lpm = &linux_pci_main; |
| 1259 | linux_pci_device_t *p = linux_pci_get_device (h); |
| 1260 | linux_pci_irq_t *irq; |
| 1261 | linux_pci_region_t *res; |
| 1262 | clib_error_t *err = 0; |
| 1263 | |
| 1264 | if (p->type == LINUX_PCI_DEVICE_TYPE_UIO) |
| 1265 | { |
| 1266 | irq = &p->intx_irq; |
| 1267 | clib_file_del_by_index (&file_main, irq->clib_file_index); |
| 1268 | close (p->config_fd); |
Mohsin Kazmi | 3d3b955 | 2018-10-24 14:05:34 +0200 | [diff] [blame] | 1269 | if (p->io_fd != -1) |
| 1270 | close (p->io_fd); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1271 | } |
| 1272 | else if (p->type == LINUX_PCI_DEVICE_TYPE_VFIO) |
| 1273 | { |
| 1274 | irq = &p->intx_irq; |
| 1275 | /* close INTx irqs */ |
| 1276 | if (irq->fd != -1) |
| 1277 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1278 | err = vfio_set_irqs (vm, p, VFIO_PCI_INTX_IRQ_INDEX, 0, 0, |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1279 | VFIO_IRQ_SET_ACTION_TRIGGER, 0); |
| 1280 | clib_error_free (err); |
| 1281 | clib_file_del_by_index (&file_main, irq->clib_file_index); |
| 1282 | close (irq->fd); |
| 1283 | } |
| 1284 | |
| 1285 | /* close MSI-X irqs */ |
| 1286 | if (vec_len (p->msix_irqs)) |
| 1287 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1288 | err = vfio_set_irqs (vm, p, VFIO_PCI_MSIX_IRQ_INDEX, 0, 0, |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1289 | VFIO_IRQ_SET_ACTION_TRIGGER, 0); |
| 1290 | clib_error_free (err); |
| 1291 | /* *INDENT-OFF* */ |
| 1292 | vec_foreach (irq, p->msix_irqs) |
| 1293 | { |
| 1294 | if (irq->fd == -1) |
| 1295 | continue; |
| 1296 | clib_file_del_by_index (&file_main, irq->clib_file_index); |
| 1297 | close (irq->fd); |
| 1298 | } |
| 1299 | /* *INDENT-ON* */ |
| 1300 | vec_free (p->msix_irqs); |
| 1301 | } |
| 1302 | } |
| 1303 | |
| 1304 | /* *INDENT-OFF* */ |
| 1305 | vec_foreach (res, p->regions) |
| 1306 | { |
| 1307 | if (res->size == 0) |
| 1308 | continue; |
| 1309 | munmap (res->addr, res->size); |
| 1310 | if (res->fd != -1) |
| 1311 | close (res->fd); |
| 1312 | } |
| 1313 | /* *INDENT-ON* */ |
| 1314 | vec_free (p->regions); |
| 1315 | |
| 1316 | close (p->fd); |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 1317 | clib_memset (p, 0, sizeof (linux_pci_device_t)); |
Damjan Marion | f313b74 | 2018-03-05 14:08:33 +0100 | [diff] [blame] | 1318 | pool_put (lpm->linux_pci_devices, p); |
| 1319 | } |
| 1320 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1321 | void |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1322 | init_device_from_registered (vlib_main_t * vm, vlib_pci_device_info_t * di) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1323 | { |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1324 | vlib_pci_main_t *pm = &pci_main; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1325 | linux_pci_main_t *lpm = &linux_pci_main; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1326 | pci_device_registration_t *r; |
| 1327 | pci_device_id_t *i; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1328 | clib_error_t *err = 0; |
| 1329 | linux_pci_device_t *p; |
| 1330 | |
| 1331 | pool_get (lpm->linux_pci_devices, p); |
| 1332 | p->handle = p - lpm->linux_pci_devices; |
Damjan Marion | d5ded2d | 2018-03-05 10:18:50 +0100 | [diff] [blame] | 1333 | p->intx_irq.fd = -1; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1334 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 1335 | r = pm->pci_device_registrations; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1336 | |
| 1337 | while (r) |
| 1338 | { |
| 1339 | for (i = r->supported_devices; i->vendor_id != 0; i++) |
Damjan Marion | 3a59382 | 2018-02-17 14:06:53 +0100 | [diff] [blame] | 1340 | if (i->vendor_id == di->vendor_id && i->device_id == di->device_id) |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1341 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1342 | if (di->iommu_group != -1) |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1343 | err = add_device_vfio (vm, p, di, r); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1344 | else |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1345 | err = add_device_uio (vm, p, di, r); |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 1346 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1347 | if (err) |
| 1348 | clib_error_report (err); |
| 1349 | else |
| 1350 | return; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1351 | } |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1352 | r = r->next_registration; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1353 | } |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1354 | |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1355 | /* No driver, close the PCI config-space FD */ |
Dave Barach | b7b9299 | 2018-10-17 10:38:51 -0400 | [diff] [blame] | 1356 | clib_memset (p, 0, sizeof (linux_pci_device_t)); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1357 | pool_put (lpm->linux_pci_devices, p); |
| 1358 | } |
| 1359 | |
| 1360 | static clib_error_t * |
| 1361 | scan_pci_addr (void *arg, u8 * dev_dir_name, u8 * ignored) |
| 1362 | { |
| 1363 | vlib_pci_addr_t addr, **addrv = arg; |
| 1364 | unformat_input_t input; |
| 1365 | clib_error_t *err = 0; |
| 1366 | |
| 1367 | unformat_init_string (&input, (char *) dev_dir_name, |
| 1368 | vec_len (dev_dir_name)); |
| 1369 | |
| 1370 | if (!unformat (&input, "/sys/bus/pci/devices/%U", |
| 1371 | unformat_vlib_pci_addr, &addr)) |
| 1372 | err = clib_error_return (0, "unformat error `%v`", dev_dir_name); |
| 1373 | |
| 1374 | unformat_free (&input); |
| 1375 | |
| 1376 | if (err) |
| 1377 | return err; |
| 1378 | |
| 1379 | vec_add1 (*addrv, addr); |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1380 | return 0; |
| 1381 | } |
| 1382 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1383 | static int |
| 1384 | pci_addr_cmp (void *v1, void *v2) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1385 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1386 | vlib_pci_addr_t *a1 = v1; |
| 1387 | vlib_pci_addr_t *a2 = v2; |
| 1388 | |
| 1389 | if (a1->domain > a2->domain) |
| 1390 | return 1; |
| 1391 | if (a1->domain < a2->domain) |
| 1392 | return -1; |
| 1393 | if (a1->bus > a2->bus) |
| 1394 | return 1; |
| 1395 | if (a1->bus < a2->bus) |
| 1396 | return -1; |
| 1397 | if (a1->slot > a2->slot) |
| 1398 | return 1; |
| 1399 | if (a1->slot < a2->slot) |
| 1400 | return -1; |
| 1401 | if (a1->function > a2->function) |
| 1402 | return 1; |
| 1403 | if (a1->function < a2->function) |
| 1404 | return -1; |
| 1405 | return 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1406 | } |
| 1407 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1408 | vlib_pci_addr_t * |
| 1409 | vlib_pci_get_all_dev_addrs () |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1410 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1411 | vlib_pci_addr_t *addrs = 0; |
| 1412 | clib_error_t *err; |
| 1413 | err = foreach_directory_file ((char *) sysfs_pci_dev_path, scan_pci_addr, |
| 1414 | &addrs, /* scan_dirs */ 0); |
| 1415 | if (err) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1416 | { |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1417 | vec_free (addrs); |
| 1418 | return 0; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1419 | } |
| 1420 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1421 | vec_sort_with_function (addrs, pci_addr_cmp); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 1422 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1423 | return addrs; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1424 | } |
| 1425 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1426 | clib_error_t * |
| 1427 | linux_pci_init (vlib_main_t * vm) |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1428 | { |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1429 | vlib_pci_main_t *pm = &pci_main; |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1430 | vlib_pci_addr_t *addr = 0, *addrs; |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1431 | clib_error_t *error; |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1432 | |
| 1433 | pm->vlib_main = vm; |
| 1434 | |
| 1435 | if ((error = vlib_call_init_function (vm, unix_input_init))) |
| 1436 | return error; |
| 1437 | |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1438 | ASSERT (sizeof (vlib_pci_addr_t) == sizeof (u32)); |
Damjan Marion | a42cd34 | 2016-04-13 18:03:20 +0200 | [diff] [blame] | 1439 | |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1440 | addrs = vlib_pci_get_all_dev_addrs (); |
| 1441 | /* *INDENT-OFF* */ |
| 1442 | vec_foreach (addr, addrs) |
| 1443 | { |
| 1444 | vlib_pci_device_info_t *d; |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1445 | if ((d = vlib_pci_get_device_info (vm, addr, 0))) |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1446 | { |
Damjan Marion | 2322798 | 2018-10-22 13:38:57 +0200 | [diff] [blame] | 1447 | init_device_from_registered (vm, d); |
Damjan Marion | cef87f1 | 2017-10-05 15:32:41 +0200 | [diff] [blame] | 1448 | vlib_pci_free_device_info (d); |
| 1449 | } |
| 1450 | } |
| 1451 | /* *INDENT-ON* */ |
Ed Warnicke | cb9cada | 2015-12-08 15:45:58 -0700 | [diff] [blame] | 1452 | |
| 1453 | return error; |
| 1454 | } |
| 1455 | |
Damjan Marion | 5a206ea | 2016-05-12 22:11:03 +0200 | [diff] [blame] | 1456 | VLIB_INIT_FUNCTION (linux_pci_init); |
Dave Barach | 9b8ffd9 | 2016-07-08 08:13:45 -0400 | [diff] [blame] | 1457 | |
| 1458 | /* |
| 1459 | * fd.io coding-style-patch-verification: ON |
| 1460 | * |
| 1461 | * Local Variables: |
| 1462 | * eval: (c-set-style "gnu") |
| 1463 | * End: |
| 1464 | */ |