1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright 2014 IBM Corp. 4 */ 5 6 #ifndef _ASM_PNV_PCI_H 7 #define _ASM_PNV_PCI_H 8 9 #include <linux/pci.h> 10 #include <linux/pci_hotplug.h> 11 #include <linux/irq.h> 12 #include <misc/cxl-base.h> 13 #include <asm/opal-api.h> 14 15 #define PCI_SLOT_ID_PREFIX (1UL << 63) 16 #define PCI_SLOT_ID(phb_id, bdfn) \ 17 (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id)) 18 19 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id); 20 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len); 21 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state); 22 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state); 23 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state, 24 struct opal_msg *msg); 25 extern int pnv_pci_set_p2p(struct pci_dev *initiator, struct pci_dev *target, 26 u64 desc); 27 28 extern int pnv_pci_enable_tunnel(struct pci_dev *dev, uint64_t *asnind); 29 extern int pnv_pci_disable_tunnel(struct pci_dev *dev); 30 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr, 31 int enable); 32 extern int pnv_pci_get_as_notify_info(struct task_struct *task, u32 *lpid, 33 u32 *pid, u32 *tid); 34 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode); 35 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, 36 unsigned int virq); 37 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); 38 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num); 39 int pnv_cxl_get_irq_count(struct pci_dev *dev); 40 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev); 41 int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq); 42 bool is_pnv_opal_msi(struct irq_chip *chip); 43 44 #ifdef CONFIG_CXL_BASE 45 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, 46 struct pci_dev *dev, int num); 47 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, 48 struct pci_dev *dev); 49 #endif 50 51 struct pnv_php_slot { 52 struct hotplug_slot slot; 53 uint64_t id; 54 char *name; 55 int slot_no; 56 unsigned int flags; 57 #define PNV_PHP_FLAG_BROKEN_PDC 0x1 58 struct kref kref; 59 #define PNV_PHP_STATE_INITIALIZED 0 60 #define PNV_PHP_STATE_REGISTERED 1 61 #define PNV_PHP_STATE_POPULATED 2 62 #define PNV_PHP_STATE_OFFLINE 3 63 int state; 64 int irq; 65 struct workqueue_struct *wq; 66 struct device_node *dn; 67 struct pci_dev *pdev; 68 struct pci_bus *bus; 69 bool power_state_check; 70 u8 attention_state; 71 void *fdt; 72 void *dt; 73 struct of_changeset ocs; 74 struct pnv_php_slot *parent; 75 struct list_head children; 76 struct list_head link; 77 }; 78 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn); 79 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot, 80 uint8_t state); 81 82 #endif 83