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Diffstat (limited to 'vlib/vlib/unix/pci.h')
-rw-r--r-- | vlib/vlib/unix/pci.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/vlib/vlib/unix/pci.h b/vlib/vlib/unix/pci.h new file mode 100644 index 00000000000..b384250eb47 --- /dev/null +++ b/vlib/vlib/unix/pci.h @@ -0,0 +1,94 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * unix/pci.h: Linux specific pci state + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef included_unix_pci_h +#define included_unix_pci_h + +#include <vlib/pci/pci.h> + +typedef struct { + /* /sys/bus/pci/devices/... directory name for this device. */ + u8 * dev_dir_name; + + /* Resource file descriptors. */ + int * resource_fds; + + /* File descriptor for config space read/write. */ + int config_fd; + + /* PCI bus address for this devices parsed from /sys/bus/pci/devices name. */ + pci_bus_address_t bus_address; + + /* File descriptor for /dev/uio%d */ + int uio_fd; + + /* Minor device for uio device. */ + u32 uio_minor; + + /* Index given by unix_file_add. */ + u32 unix_file_index; + + /* Input node to handle interrupts for this device. */ + u32 device_input_node_index; + + /* Node runtime will be a bitmap of device indices with pending interrupts. */ + u32 device_index; +} linux_pci_device_t; + +/* Pool of PCI devices. */ +typedef struct { + vlib_main_t * vlib_main; + linux_pci_device_t * pci_devices; +} linux_pci_main_t; + +extern linux_pci_main_t linux_pci_main; + +always_inline linux_pci_device_t * +pci_dev_for_linux (pci_device_t * dev) +{ + linux_pci_main_t * pm = &linux_pci_main; + return pool_elt_at_index (pm->pci_devices, dev->os_handle); +} + +/* Call to allocate/initialize the pci subsystem. + This is not an init function so that users can explicitly enable + pci only when it's needed. */ +clib_error_t * pci_bus_init (vlib_main_t * vm); + +#endif /* included_unix_pci_h */ |