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 #define PCI_PHB_SLOT_ID(phb_id) (phb_id) 19 20 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id); 21 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len); 22 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state); 23 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state); 24 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state, 25 struct opal_msg *msg); 26 27 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr, 28 int enable); 29 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode); 30 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, 31 unsigned int virq); 32 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); 33 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num); 34 int pnv_cxl_get_irq_count(struct pci_dev *dev); 35 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev); 36 int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq); 37 bool is_pnv_opal_msi(struct irq_chip *chip); 38 39 #ifdef CONFIG_CXL_BASE 40 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, 41 struct pci_dev *dev, int num); 42 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, 43 struct pci_dev *dev); 44 #endif 45 46 struct pnv_php_slot { 47 struct hotplug_slot slot; 48 uint64_t id; 49 char *name; 50 int slot_no; 51 unsigned int flags; 52 #define PNV_PHP_FLAG_BROKEN_PDC 0x1 53 struct kref kref; 54 #define PNV_PHP_STATE_INITIALIZED 0 55 #define PNV_PHP_STATE_REGISTERED 1 56 #define PNV_PHP_STATE_POPULATED 2 57 #define PNV_PHP_STATE_OFFLINE 3 58 int state; 59 int irq; 60 struct workqueue_struct *wq; 61 struct device_node *dn; 62 struct pci_dev *pdev; 63 struct pci_bus *bus; 64 bool power_state_check; 65 u8 attention_state; 66 void *fdt; 67 void *dt; 68 struct of_changeset ocs; 69 struct pnv_php_slot *parent; 70 struct list_head children; 71 struct list_head link; 72 }; 73 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn); 74 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot, 75 uint8_t state); 76 77 #endif 78