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34 #ifndef _EAL_PRIVATE_H_
35 #define _EAL_PRIVATE_H_
42 * Initialize the memzone subsystem (private to eal).
48 int rte_eal_memzone_init(void);
51 * Common log initialization function (private to eal). Determines
52 * where log data is written when no call to rte_openlog_stream is
56 * The default log stream to be used.
61 void eal_log_set_default(FILE *default_log);
64 * Fill configuration with number of physical and logical processors
66 * This function is private to EAL.
68 * Parse /proc/cpuinfo to get the number of physical and logical
69 * processors on the machine.
72 * 0 on success, negative on error
74 int rte_eal_cpu_init(void);
79 * This function is private to EAL.
81 * Fill configuration structure with these infos, and return 0 on success.
84 * 0 on success, negative on error
86 int rte_eal_memory_init(void);
91 * This function is private to EAL.
93 * Mmap memory areas used by HPET (high precision event timer) that will
94 * provide our time reference, and configure the TSC frequency also for it
95 * to be used as a reference.
98 * 0 on success, negative on error
100 int rte_eal_timer_init(void);
103 * Init the default log stream
105 * This function is private to EAL.
108 * 0 on success, negative on error
110 int rte_eal_log_init(const char *id, int facility);
113 * Init the PCI infrastructure
115 * This function is private to EAL.
118 * 0 on success, negative on error
120 int rte_eal_pci_init(void);
122 struct rte_pci_driver;
123 struct rte_pci_device;
126 * Add a PCI device to the PCI Bus (append to PCI Device list). This function
127 * also updates the bus references of the PCI Device (and the generic device
128 * object embedded within.
134 void rte_eal_pci_add_device(struct rte_pci_device *pci_dev);
137 * Insert a PCI device in the PCI Bus at a particular location in the device
138 * list. It also updates the PCI Bus reference of the new devices to be
141 * @param exist_pci_dev
142 * Existing PCI device in PCI Bus
144 * PCI device to be added before exist_pci_dev
147 void rte_eal_pci_insert_device(struct rte_pci_device *exist_pci_dev,
148 struct rte_pci_device *new_pci_dev);
151 * Remove a PCI device from the PCI Bus. This sets to NULL the bus references
152 * in the PCI device object as well as the generic device object.
155 * PCI device to be removed from PCI Bus
158 void rte_eal_pci_remove_device(struct rte_pci_device *pci_device);
161 * Update a pci device object by asking the kernel for the latest information.
163 * This function is private to EAL.
166 * The PCI Bus-Device-Function address to look for
169 * - negative on error.
171 int pci_update_device(const struct rte_pci_addr *addr);
174 * Unbind kernel driver for this device
176 * This function is private to EAL.
179 * 0 on success, negative on error
181 int pci_unbind_kernel_driver(struct rte_pci_device *dev);
184 * Map the PCI resource of a PCI device in virtual memory
186 * This function is private to EAL.
189 * 0 on success, negative on error
191 int pci_uio_map_resource(struct rte_pci_device *dev);
194 * Unmap the PCI resource of a PCI device
196 * This function is private to EAL.
198 void pci_uio_unmap_resource(struct rte_pci_device *dev);
201 * Allocate uio resource for PCI device
203 * This function is private to EAL.
206 * PCI device to allocate uio resource
208 * Pointer to uio resource.
209 * If the function returns 0, the pointer will be filled.
211 * 0 on success, negative on error
213 int pci_uio_alloc_resource(struct rte_pci_device *dev,
214 struct mapped_pci_resource **uio_res);
217 * Free uio resource for PCI device
219 * This function is private to EAL.
222 * PCI device to free uio resource
224 * Pointer to uio resource.
226 void pci_uio_free_resource(struct rte_pci_device *dev,
227 struct mapped_pci_resource *uio_res);
230 * Map device memory to uio resource
232 * This function is private to EAL.
235 * PCI device that has memory information.
237 * Memory resource index of the PCI device.
239 * uio resource that will keep mapping information.
241 * Mapping information index of the uio resource.
243 * 0 on success, negative on error
245 int pci_uio_map_resource_by_index(struct rte_pci_device *dev, int res_idx,
246 struct mapped_pci_resource *uio_res, int map_idx);
249 * Init tail queues for non-EAL library structures. This is to allow
250 * the rings, mempools, etc. lists to be shared among multiple processes
252 * This function is private to EAL
255 * 0 on success, negative on error
257 int rte_eal_tailqs_init(void);
260 * Init interrupt handling.
262 * This function is private to EAL.
265 * 0 on success, negative on error
267 int rte_eal_intr_init(void);
270 * Init alarm mechanism. This is to allow a callback be called after
273 * This function is private to EAL.
276 * 0 on success, negative on error
278 int rte_eal_alarm_init(void);
281 * Function is to check if the kernel module(like, vfio, vfio_iommu_type1,
285 * The module's name which need to be checked
288 * -1 means some error happens(NULL pointer or open failure)
289 * 0 means the module not loaded
290 * 1 means the module loaded
292 int rte_eal_check_module(const char *module_name);
297 * This function is private to the EAL.
299 unsigned eal_cpu_core_id(unsigned lcore_id);
302 * Check if cpu is present.
304 * This function is private to the EAL.
306 int eal_cpu_detected(unsigned lcore_id);
309 * Set TSC frequency from precise value or estimation
311 * This function is private to the EAL.
313 void set_tsc_freq(void);
316 * Get precise TSC frequency from system
318 * This function is private to the EAL.
320 uint64_t get_tsc_freq(void);
323 * Prepare physical memory mapping
324 * i.e. hugepages on Linux and
327 * This function is private to the EAL.
329 int rte_eal_hugepage_init(void);
332 * Creates memory mapping in secondary process
333 * i.e. hugepages on Linux and
336 * This function is private to the EAL.
338 int rte_eal_hugepage_attach(void);
341 * Returns true if the system is able to obtain
342 * physical addresses. Return false if using DMA
343 * addresses through an IOMMU.
345 * Drivers based on uio will not load unless physical
346 * addresses are obtainable. It is only possible to get
347 * physical addresses when running as a privileged user.
349 bool rte_eal_using_phys_addrs(void);
351 #endif /* _EAL_PRIVATE_H_ */