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22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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33 * version: DPDK.L.1.2.3-3
49 #include <sys/queue.h>
52 #include <rte_interrupts.h>
54 TAILQ_HEAD(pci_device_list, rte_pci_device); /**< PCI devices in D-linked Q. */
55 TAILQ_HEAD(pci_driver_list, rte_pci_driver); /**< PCI drivers in D-linked Q. */
57 extern struct pci_driver_list driver_list; /**< Global list of PCI drivers. */
58 extern struct pci_device_list device_list; /**< Global list of PCI devices. */
60 /** Pathname of PCI devices directory. */
61 #define SYSFS_PCI_DEVICES "/sys/bus/pci/devices"
63 /** Formatting string for PCI device identifier: Ex: 0000:00:01.0 */
64 #define PCI_PRI_FMT "%.4"PRIx16":%.2"PRIx8":%.2"PRIx8".%"PRIx8
66 /** Nb. of values in PCI device identifier format string. */
67 #define PCI_FMT_NVAL 4
69 /** Nb. of values in PCI resource format. */
70 #define PCI_RESOURCE_FMT_NVAL 3
73 * A structure describing a PCI resource.
75 struct rte_pci_resource {
76 uint64_t phys_addr; /**< Physical address, 0 if no resource. */
77 uint64_t len; /**< Length of the resource. */
78 void *addr; /**< Virtual address, NULL when not mapped. */
81 /** Maximum number of PCI resources. */
82 #define PCI_MAX_RESOURCE 7
85 * A structure describing an ID for a PCI driver. Each driver provides a
86 * table of these IDs for each device that it supports.
89 uint16_t vendor_id; /**< Vendor ID or PCI_ANY_ID. */
90 uint16_t device_id; /**< Device ID or PCI_ANY_ID. */
91 uint16_t subsystem_vendor_id; /**< Subsystem vendor ID or PCI_ANY_ID. */
92 uint16_t subsystem_device_id; /**< Subsystem device ID or PCI_ANY_ID. */
96 * A structure describing the location of a PCI device.
99 uint16_t domain; /**< Device domain */
100 uint8_t bus; /**< Device bus */
101 uint8_t devid; /**< Device ID */
102 uint8_t function; /**< Device function. */
106 * A structure describing a PCI device.
108 struct rte_pci_device {
109 TAILQ_ENTRY(rte_pci_device) next; /**< Next probed PCI device. */
110 struct rte_pci_addr addr; /**< PCI location. */
111 struct rte_pci_id id; /**< PCI ID. */
112 struct rte_pci_resource mem_resource; /**< PCI Memory Resource */
113 struct rte_intr_handle intr_handle; /**< Interrupt handle */
116 /** Any PCI device identifier (vendor, device, ...) */
117 #define PCI_ANY_ID (0xffff)
120 /** C++ macro used to help building up tables of device IDs */
121 #define RTE_PCI_DEVICE(vend, dev) \
127 /** Macro used to help building up tables of device IDs */
128 #define RTE_PCI_DEVICE(vend, dev) \
129 .vendor_id = (vend), \
130 .device_id = (dev), \
131 .subsystem_vendor_id = PCI_ANY_ID, \
132 .subsystem_device_id = PCI_ANY_ID
135 struct rte_pci_driver;
138 * Initialisation function for the driver called during PCI probing.
140 typedef int (pci_devinit_t)(struct rte_pci_driver *, struct rte_pci_device *);
143 * A structure describing a PCI driver.
145 struct rte_pci_driver {
146 TAILQ_ENTRY(rte_pci_driver) next; /**< Next in list. */
147 const char *name; /**< Driver name. */
148 pci_devinit_t *devinit; /**< Device init. function. */
149 struct rte_pci_id *id_table; /**< ID table, NULL terminated. */
150 uint32_t drv_flags; /**< Flags contolling handling of device. */
153 /**< Device needs igb_uio kernel module */
154 #define RTE_PCI_DRV_NEED_IGB_UIO 0x0001
157 * Probe the PCI bus for registered drivers.
159 * Scan the content of the PCI bus, and call the probe() function for
160 * all registered drivers that have a matching entry in its id_table
161 * for discovered devices.
165 * - Negative on error.
167 int rte_eal_pci_probe(void);
170 * Dump the content of the PCI bus.
172 void rte_eal_pci_dump(void);
175 * Register a PCI driver.
178 * A pointer to a rte_pci_driver structure describing the driver
181 void rte_eal_pci_register(struct rte_pci_driver *driver);
184 * Register a list of PCI locations that will be blacklisted (not used by DPDK).
187 * List of PCI device addresses that will not be used by DPDK.
189 * Number of items in the list.
191 void rte_eal_pci_set_blacklist(struct rte_pci_addr *blacklist, unsigned size);
197 #endif /* _RTE_PCI_H_ */