vpp - Vector Packet Processing

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/* * Copyright (c) 2016 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. */ /* * pci.h: PCI definitions. * * 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_vlib_pci_h #define included_vlib_pci_h #include <vlib/vlib.h> #include <vlib/pci/pci_config.h> typedef CLIB_PACKED (union { struct { u16 domain; u8 bus; u8 slot: 5; u8 function:3;}; u32 as_u32;}) vlib_pci_addr_t; typedef struct vlib_pci_device { /* Operating system handle for this device. */ uword os_handle; vlib_pci_addr_t bus_address; /* First 64 bytes of configuration space. */ union { pci_config_type0_regs_t config0; pci_config_type1_regs_t config1; u8 config_data[256]; }; /* Interrupt handler */ void (*interrupt_handler) (struct vlib_pci_device * dev); /* Driver name */ u8 *driver_name; /* Numa Node */ int numa_node; /* Device data */ u16 device_class; u16 vendor_id; u16 device_id; /* Vital Product Data */ u8 *product_name; u8 *vpd_r; u8 *vpd_w; /* Private data */ uword private_data; } vlib_pci_device_t; typedef struct { u16 vendor_id, device_id; } pci_device_id_t; typedef struct _pci_device_registration { /* Driver init function. */ clib_error_t *(*init_function) (vlib_main_t * vm, vlib_pci_device_t * dev); /* Interrupt handler */ void (*interrupt_handler) (vlib_pci_device_t * dev); /* List of registrations */ struct _pci_device_registration *next_registration; /* Vendor/device ids supported by this driver. */ pci_device_id_t supported_devices[]; } pci_device_registration_t; /* Pool of PCI devices. */ typedef struct { vlib_main_t *vlib_main; vlib_pci_device_t *pci_devs; pci_device_registration_t *pci_device_registrations; uword *pci_dev_index_by_pci_addr; } vlib_pci_main_t; extern vlib_pci_main_t pci_main; #define PCI_REGISTER_DEVICE(x,...) \ __VA_ARGS__ pci_device_registration_t x; \ static void __vlib_add_pci_device_registration_##x (void) \ __attribute__((__constructor__)) ; \ static void __vlib_add_pci_device_registration_##x (void) \ { \ vlib_pci_main_t * pm = &pci_main; \ x.next_registration = pm->pci_device_registrations; \ pm->pci_device_registrations = &x; \ } \ __VA_ARGS__ pci_device_registration_t x clib_error_t *vlib_pci_bind_to_uio (vlib_pci_device_t * d, char *uio_driver_name); /* Configuration space read/write. */ clib_error_t *vlib_pci_read_write_config (vlib_pci_device_t * dev, vlib_read_or_write_t read_or_write, uword address, void *data, u32 n_bytes); #define _(t) \ static inline clib_error_t * \ vlib_pci_read_config_##t (vlib_pci_device_t * dev, \ uword address, t * data) \ { \ return vlib_pci_read_write_config (dev, VLIB_READ,address, data, \ sizeof (data[0])); \ } _(u32); _(u16); _(u8); #undef _ #define _(t) \ static inline clib_error_t * \ vlib_pci_write_config_##t (vlib_pci_device_t * dev, uword address, \ t * data) \ { \ return vlib_pci_read_write_config (dev, VLIB_WRITE, \ address, data, sizeof (data[0])); \ } _(u32); _(u16); _(u8); #undef _ static inline clib_error_t * vlib_pci_intr_enable (vlib_pci_device_t * dev) { u16 command; clib_error_t *err; err = vlib_pci_read_config_u16 (dev, 4, &command); if (err) return err; command &= ~PCI_COMMAND_INTX_DISABLE; return vlib_pci_write_config_u16 (dev, 4, &command); } static inline clib_error_t * vlib_pci_intr_disable (vlib_pci_device_t * dev) { u16 command; clib_error_t *err; err = vlib_pci_read_config_u16 (dev, 4, &command); if (err) return err; command |= PCI_COMMAND_INTX_DISABLE; return vlib_pci_write_config_u16 (dev, 4, &command); } static inline clib_error_t * vlib_pci_bus_master_enable (vlib_pci_device_t * dev) { clib_error_t *err; u16 command; /* Set bus master enable (BME) */ err = vlib_pci_read_config_u16 (dev, 4, &command); if (err) return err; if (command & PCI_COMMAND_BUS_MASTER) return 0; command |= PCI_COMMAND_BUS_MASTER; return vlib_pci_write_config_u16 (dev, 4, &command); } clib_error_t *vlib_pci_map_resource (vlib_pci_device_t * dev, u32 resource, void **result); clib_error_t *vlib_pci_map_resource_fixed (vlib_pci_device_t * dev, u32 resource, u8 * addr, void **result); vlib_pci_device_t *vlib_get_pci_device (vlib_pci_addr_t * addr); /* Free's device. */ void vlib_pci_free_device (vlib_pci_device_t * dev); unformat_function_t unformat_vlib_pci_addr; format_function_t format_vlib_pci_addr; format_function_t format_vlib_pci_handle; format_function_t format_vlib_pci_link_speed; format_function_t format_vlib_pci_vpd; #endif /* included_vlib_pci_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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