cregit-Linux how code gets into the kernel

Release 4.10 tools/power/cpupower/utils/helpers/pci.c

#if defined(__i386__) || defined(__x86_64__)

#include <helpers/helpers.h>

/*
 * pci_acc_init
 *
 * PCI access helper function depending on libpci
 *
 * **pacc : if a valid pci_dev is returned
 *         *pacc must be passed to pci_acc_cleanup to free it
 *
 * domain: domain
 * bus:    bus
 * slot:   slot
 * func:   func
 * vendor: vendor
 * device: device
 * Pass -1 for one of the six above to match any
 *
 * Returns :
 * struct pci_dev which can be used with pci_{read,write}_* functions
 *                to access the PCI config space of matching pci devices
 */

struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, int bus, int slot, int func, int vendor, int dev) { struct pci_filter filter_nb_link; struct pci_dev *device; *pacc = pci_alloc(); if (*pacc == NULL) return NULL; pci_filter_init(*pacc, &filter_nb_link); filter_nb_link.domain = domain; filter_nb_link.bus = bus; filter_nb_link.slot = slot; filter_nb_link.func = func; filter_nb_link.vendor = vendor; filter_nb_link.device = dev; pci_init(*pacc); pci_scan_bus(*pacc); for (device = (*pacc)->devices; device; device = device->next) { if (pci_filter_match(&filter_nb_link, device)) return device; } pci_cleanup(*pacc); return NULL; }

Contributors

PersonTokensPropCommitsCommitProp
dominik brodowskidominik brodowski9762.18%133.33%
lucas stachlucas stach4528.85%133.33%
thomas renningerthomas renninger148.97%133.33%
Total156100.00%3100.00%

/* Typically one wants to get a specific slot(device)/func of the root domain and bus */
struct pci_dev *pci_slot_func_init(struct pci_access **pacc, int slot, int func) { return pci_acc_init(pacc, 0, 0, slot, func, -1, -1); }

Contributors

PersonTokensPropCommitsCommitProp
thomas renningerthomas renninger39100.00%1100.00%
Total39100.00%1100.00%

#endif /* defined(__i386__) || defined(__x86_64__) */

Overall Contributors

PersonTokensPropCommitsCommitProp
dominik brodowskidominik brodowski11453.27%133.33%
thomas renningerthomas renninger5525.70%133.33%
lucas stachlucas stach4521.03%133.33%
Total214100.00%3100.00%
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