X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Finclude%2Frte_pci.h;h=785852d1a1e5636c89ea0c4d3cf76bc12c2637d5;hb=b5a1f1ae2f98c644389293bd97e81a0ab2b2b31f;hp=99f4de2993eb45715d7c8449895bd3895c4622af;hpb=66daf76700061966fad71130ebbd3977a8746d8a;p=dpdk.git diff --git a/lib/librte_eal/common/include/rte_pci.h b/lib/librte_eal/common/include/rte_pci.h index 99f4de2993..785852d1a1 100644 --- a/lib/librte_eal/common/include/rte_pci.h +++ b/lib/librte_eal/common/include/rte_pci.h @@ -1,39 +1,38 @@ /*- * BSD LICENSE - * - * Copyright(c) 2010-2012 Intel Corporation. All rights reserved. + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions * are met: - * - * * Redistributions of source code must retain the above copyright + * + * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the * distribution. - * * Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * */ /* BSD LICENSE * - * Copyright(c) 2013 6WIND. + * Copyright 2013-2014 6WIND S.A. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -75,23 +74,29 @@ extern "C" { #endif +#include #include +#include #include #include #include + #include TAILQ_HEAD(pci_device_list, rte_pci_device); /**< PCI devices in D-linked Q. */ TAILQ_HEAD(pci_driver_list, rte_pci_driver); /**< PCI drivers in D-linked Q. */ -extern struct pci_driver_list driver_list; /**< Global list of PCI drivers. */ -extern struct pci_device_list device_list; /**< Global list of PCI devices. */ +extern struct pci_driver_list pci_driver_list; /**< Global list of PCI drivers. */ +extern struct pci_device_list pci_device_list; /**< Global list of PCI devices. */ /** Pathname of PCI devices directory. */ #define SYSFS_PCI_DEVICES "/sys/bus/pci/devices" /** Formatting string for PCI device identifier: Ex: 0000:00:01.0 */ -#define PCI_PRI_FMT "%.4"PRIx16":%.2"PRIx8":%.2"PRIx8".%"PRIx8 +#define PCI_PRI_FMT "%.4" PRIx16 ":%.2" PRIx8 ":%.2" PRIx8 ".%" PRIx8 + +/** Short formatting string, without domain, for PCI device: Ex: 00:01.0 */ +#define PCI_SHORT_PRI_FMT "%.2" PRIx8 ":%.2" PRIx8 ".%" PRIx8 /** Nb. of values in PCI device identifier format string. */ #define PCI_FMT_NVAL 4 @@ -99,6 +104,9 @@ extern struct pci_device_list device_list; /**< Global list of PCI devices. */ /** Nb. of values in PCI resource format. */ #define PCI_RESOURCE_FMT_NVAL 3 +/** IO resource type: memory address space */ +#define IORESOURCE_MEM 0x00000200 + /** * A structure describing a PCI resource. */ @@ -109,7 +117,7 @@ struct rte_pci_resource { }; /** Maximum number of PCI resources. */ -#define PCI_MAX_RESOURCE 7 +#define PCI_MAX_RESOURCE 6 /** * A structure describing an ID for a PCI driver. Each driver provides a @@ -132,6 +140,15 @@ struct rte_pci_addr { uint8_t function; /**< Device function. */ }; +struct rte_devargs; + +enum rte_kernel_driver { + RTE_KDRV_UNKNOWN = 0, + RTE_KDRV_IGB_UIO, + RTE_KDRV_VFIO, + RTE_KDRV_UIO_GENERIC, +}; + /** * A structure describing a PCI device. */ @@ -139,11 +156,13 @@ struct rte_pci_device { TAILQ_ENTRY(rte_pci_device) next; /**< Next probed PCI device. */ struct rte_pci_addr addr; /**< PCI location. */ struct rte_pci_id id; /**< PCI ID. */ - struct rte_pci_resource mem_resource; /**< PCI Memory Resource */ + struct rte_pci_resource mem_resource[PCI_MAX_RESOURCE]; /**< PCI Memory Resource */ struct rte_intr_handle intr_handle; /**< Interrupt handle */ - char previous_dr[PATH_MAX]; /**< path for pre-dpdk driver*/ - const struct rte_pci_driver *driver; /**< Associated driver */ - unsigned int blacklisted:1; /**< Device is blacklisted */ + struct rte_pci_driver *driver; /**< Associated driver */ + uint16_t max_vfs; /**< sriov enable if not zero */ + int numa_node; /**< NUMA node connection */ + struct rte_devargs *devargs; /**< Device user arguments */ + enum rte_kernel_driver kdrv; /**< Kernel driver passthrough */ }; /** Any PCI device identifier (vendor, device, ...) */ @@ -172,6 +191,11 @@ struct rte_pci_driver; */ typedef int (pci_devinit_t)(struct rte_pci_driver *, struct rte_pci_device *); +/** + * Uninitialisation function for the driver called during hotplugging. + */ +typedef int (pci_devuninit_t)(struct rte_pci_device *); + /** * A structure describing a PCI driver. */ @@ -179,19 +203,123 @@ struct rte_pci_driver { TAILQ_ENTRY(rte_pci_driver) next; /**< Next in list. */ const char *name; /**< Driver name. */ pci_devinit_t *devinit; /**< Device init. function. */ + pci_devuninit_t *devuninit; /**< Device uninit function. */ struct rte_pci_id *id_table; /**< ID table, NULL terminated. */ uint32_t drv_flags; /**< Flags contolling handling of device. */ }; -/**< Device needs igb_uio kernel module */ -#define RTE_PCI_DRV_NEED_IGB_UIO 0x0001 -/**< Device driver must be registered several times until failure */ -#define RTE_PCI_DRV_MULTIPLE 0x0002 +/** Device needs PCI BAR mapping (done with either IGB_UIO or VFIO) */ +#define RTE_PCI_DRV_NEED_MAPPING 0x0001 +/** Device driver must be registered several times until failure - deprecated */ +#pragma GCC poison RTE_PCI_DRV_MULTIPLE +/** Device needs to be unbound even if no module is provided */ +#define RTE_PCI_DRV_FORCE_UNBIND 0x0004 +/** Device driver supports link state interrupt */ +#define RTE_PCI_DRV_INTR_LSC 0x0008 +/** Device driver supports detaching capability */ +#define RTE_PCI_DRV_DETACHABLE 0x0010 + +/**< Internal use only - Macro used by pci addr parsing functions **/ +#define GET_PCIADDR_FIELD(in, fd, lim, dlm) \ +do { \ + unsigned long val; \ + char *end; \ + errno = 0; \ + val = strtoul((in), &end, 16); \ + if (errno != 0 || end[0] != (dlm) || val > (lim)) \ + return (-EINVAL); \ + (fd) = (typeof (fd))val; \ + (in) = end + 1; \ +} while(0) + +/** + * Utility function to produce a PCI Bus-Device-Function value + * given a string representation. Assumes that the BDF is provided without + * a domain prefix (i.e. domain returned is always 0) + * + * @param input + * The input string to be parsed. Should have the format XX:XX.X + * @param dev_addr + * The PCI Bus-Device-Function address to be returned. Domain will always be + * returned as 0 + * @return + * 0 on success, negative on error. + */ +static inline int +eal_parse_pci_BDF(const char *input, struct rte_pci_addr *dev_addr) +{ + dev_addr->domain = 0; + GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); + GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); + return (0); +} + +/** + * Utility function to produce a PCI Bus-Device-Function value + * given a string representation. Assumes that the BDF is provided including + * a domain prefix. + * + * @param input + * The input string to be parsed. Should have the format XXXX:XX:XX.X + * @param dev_addr + * The PCI Bus-Device-Function address to be returned + * @return + * 0 on success, negative on error. + */ +static inline int +eal_parse_pci_DomBDF(const char *input, struct rte_pci_addr *dev_addr) +{ + GET_PCIADDR_FIELD(input, dev_addr->domain, UINT16_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->bus, UINT8_MAX, ':'); + GET_PCIADDR_FIELD(input, dev_addr->devid, UINT8_MAX, '.'); + GET_PCIADDR_FIELD(input, dev_addr->function, UINT8_MAX, 0); + return (0); +} +#undef GET_PCIADDR_FIELD +/* Compare two PCI device addresses. */ /** - * Perform clean up of pci drivers on application exits. - * */ -void rte_eal_pci_exit(void); + * Utility function to compare two PCI device addresses. + * + * @param addr + * The PCI Bus-Device-Function address to compare + * @param addr2 + * The PCI Bus-Device-Function address to compare + * @return + * 0 on equal PCI address. + * Positive on addr is greater than addr2. + * Negative on addr is less than addr2, or error. + */ +static inline int +rte_eal_compare_pci_addr(struct rte_pci_addr *addr, struct rte_pci_addr *addr2) +{ + uint64_t dev_addr, dev_addr2; + + if ((addr == NULL) || (addr2 == NULL)) + return -1; + + dev_addr = (addr->domain << 24) | (addr->bus << 16) | + (addr->devid << 8) | addr->function; + dev_addr2 = (addr2->domain << 24) | (addr2->bus << 16) | + (addr2->devid << 8) | addr2->function; + + if (dev_addr > dev_addr2) + return 1; + else if (dev_addr < dev_addr2) + return -1; + else + return 0; +} + +/** + * Scan the content of the PCI bus, and the devices in the devices + * list + * + * @return + * 0 on success, negative on error + */ +int rte_eal_pci_scan(void); /** * Probe the PCI bus for registered drivers. @@ -206,10 +334,45 @@ void rte_eal_pci_exit(void); */ int rte_eal_pci_probe(void); +#ifdef RTE_LIBRTE_EAL_HOTPLUG +/** + * Probe the single PCI device. + * + * Scan the content of the PCI bus, and find the pci device specified by pci + * address, then call the probe() function for registered driver that has a + * matching entry in its id_table for discovered device. + * + * @param addr + * The PCI Bus-Device-Function address to probe. + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_eal_pci_probe_one(struct rte_pci_addr *addr); + +/** + * Close the single PCI device. + * + * Scan the content of the PCI bus, and find the pci device specified by pci + * address, then call the close() function for registered driver that has a + * matching entry in its id_table for discovered device. + * + * @param addr + * The PCI Bus-Device-Function address to close. + * @return + * - 0 on success. + * - Negative on error. + */ +int rte_eal_pci_close_one(struct rte_pci_addr *addr); +#endif /* RTE_LIBRTE_EAL_HOTPLUG */ + /** * Dump the content of the PCI bus. + * + * @param f + * A pointer to a file for output */ -void rte_eal_pci_dump(void); +void rte_eal_pci_dump(FILE *f); /** * Register a PCI driver. @@ -221,14 +384,13 @@ void rte_eal_pci_dump(void); void rte_eal_pci_register(struct rte_pci_driver *driver); /** - * Register a list of PCI locations that will be blacklisted (not used by DPDK). + * Unregister a PCI driver. * - * @param blacklist - * List of PCI device addresses that will not be used by DPDK. - * @param size - * Number of items in the list. + * @param driver + * A pointer to a rte_pci_driver structure describing the driver + * to be unregistered. */ -void rte_eal_pci_set_blacklist(struct rte_pci_addr *blacklist, unsigned size); +void rte_eal_pci_unregister(struct rte_pci_driver *driver); #ifdef __cplusplus }