27 static int pf_provision_vfs(struct xe_device *xe, unsigned int num_vfs)  in pf_provision_vfs()  argument
31 	int result = 0, err;  in pf_provision_vfs()
33 	for_each_gt(gt, xe, id) {  in pf_provision_vfs()
43 static void pf_unprovision_vfs(struct xe_device *xe, unsigned int num_vfs)  in pf_unprovision_vfs()  argument
49 	for_each_gt(gt, xe, id)  in pf_unprovision_vfs()
54 static void pf_reset_vfs(struct xe_device *xe, unsigned int num_vfs)  in pf_reset_vfs()  argument
60 	for_each_gt(gt, xe, id)  in pf_reset_vfs()
65 static struct pci_dev *xe_pci_pf_get_vf_dev(struct xe_device *xe, unsigned int vf_id)  in xe_pci_pf_get_vf_dev()  argument
67 	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);  in xe_pci_pf_get_vf_dev()
69 	xe_assert(xe, IS_SRIOV_PF(xe));  in xe_pci_pf_get_vf_dev()
77 static void pf_link_vfs(struct xe_device *xe, int num_vfs)  in pf_link_vfs()  argument
79 	struct pci_dev *pdev_pf = to_pci_dev(xe->drm.dev);  in pf_link_vfs()
95 		pdev_vf = xe_pci_pf_get_vf_dev(xe, n - 1);  in pf_link_vfs()
99 			xe_sriov_err(xe, "Cannot find VF%u device, aborting link%s creation!\n",  in pf_link_vfs()
108 			xe_sriov_notice(xe, "Failed linking VF%u\n", n);  in pf_link_vfs()
114 static int pf_enable_vfs(struct xe_device *xe, int num_vfs)  in pf_enable_vfs()  argument
116 	struct pci_dev *pdev = to_pci_dev(xe->drm.dev);  in pf_enable_vfs()
117 	int total_vfs = xe_sriov_pf_get_totalvfs(xe);  in pf_enable_vfs()
120 	xe_assert(xe, IS_SRIOV_PF(xe));  in pf_enable_vfs()
121 	xe_assert(xe, num_vfs > 0);  in pf_enable_vfs()
122 	xe_assert(xe, num_vfs <= total_vfs);  in pf_enable_vfs()
123 	xe_sriov_dbg(xe, "enabling %u VF%s\n", num_vfs, str_plural(num_vfs));  in pf_enable_vfs()
134 	xe_pm_runtime_get_noresume(xe);  in pf_enable_vfs()
136 	err = pf_provision_vfs(xe, num_vfs);  in pf_enable_vfs()
137 	if (err < 0)  in pf_enable_vfs()
141 	if (err < 0)  in pf_enable_vfs()
144 	pf_link_vfs(xe, num_vfs);  in pf_enable_vfs()
146 	xe_sriov_info(xe, "Enabled %u of %u VF%s\n",  in pf_enable_vfs()
151 	pf_unprovision_vfs(xe, num_vfs);  in pf_enable_vfs()
152 	xe_pm_runtime_put(xe);  in pf_enable_vfs()
154 	xe_sriov_notice(xe, "Failed to enable %u VF%s (%pe)\n",  in pf_enable_vfs()
159 static int pf_disable_vfs(struct xe_device *xe)  in pf_disable_vfs()  argument
161 	struct device *dev = xe->drm.dev;  in pf_disable_vfs()
165 	xe_assert(xe, IS_SRIOV_PF(xe));  in pf_disable_vfs()
166 	xe_sriov_dbg(xe, "disabling %u VF%s\n", num_vfs, str_plural(num_vfs));  in pf_disable_vfs()
169 		return 0;  in pf_disable_vfs()
173 	pf_reset_vfs(xe, num_vfs);  in pf_disable_vfs()
175 	pf_unprovision_vfs(xe, num_vfs);  in pf_disable_vfs()
178 	xe_pm_runtime_put(xe);  in pf_disable_vfs()
180 	xe_sriov_info(xe, "Disabled %u VF%s\n", num_vfs, str_plural(num_vfs));  in pf_disable_vfs()
181 	return 0;  in pf_disable_vfs()
189  * This is the Xe implementation of struct pci_driver.sriov_configure callback.
198 	struct xe_device *xe = pdev_to_xe_device(pdev);  in xe_pci_sriov_configure()  local
201 	if (!IS_SRIOV_PF(xe))  in xe_pci_sriov_configure()
204 	if (num_vfs < 0)  in xe_pci_sriov_configure()
207 	if (num_vfs > xe_sriov_pf_get_totalvfs(xe))  in xe_pci_sriov_configure()
213 	xe_pm_runtime_get(xe);  in xe_pci_sriov_configure()
214 	if (num_vfs > 0)  in xe_pci_sriov_configure()
215 		ret = pf_enable_vfs(xe, num_vfs);  in xe_pci_sriov_configure()
217 		ret = pf_disable_vfs(xe);  in xe_pci_sriov_configure()
218 	xe_pm_runtime_put(xe);  in xe_pci_sriov_configure()