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 <linux/of.h> 13 #include <misc/cxl-base.h> 14 #include <asm/opal-api.h> 15 16 #define PCI_SLOT_ID_PREFIX (1UL << 63) 17 #define PCI_SLOT_ID(phb_id, bdfn) \ 18 (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id)) 19 #define PCI_PHB_SLOT_ID(phb_id) (phb_id) 20 21 extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id); 22 extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len); 23 extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state); 24 extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state); 25 extern int pnv_pci_set_power_state(uint64_t id, uint8_t state, 26 struct opal_msg *msg); 27 28 extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr, 29 int enable); 30 int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode); 31 int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq, 32 unsigned int virq); 33 int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num); 34 void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num); 35 int pnv_cxl_get_irq_count(struct pci_dev *dev); 36 struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev); 37 int64_t pnv_opal_pci_msi_eoi(struct irq_data *d); 38 bool is_pnv_opal_msi(struct irq_chip *chip); 39 40 #ifdef CONFIG_CXL_BASE 41 int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs, 42 struct pci_dev *dev, int num); 43 void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs, 44 struct pci_dev *dev); 45 #endif 46 47 struct pnv_php_slot { 48 struct hotplug_slot slot; 49 uint64_t id; 50 char *name; 51 int slot_no; 52 unsigned int flags; 53 #define PNV_PHP_FLAG_BROKEN_PDC 0x1 54 struct kref kref; 55 #define PNV_PHP_STATE_INITIALIZED 0 56 #define PNV_PHP_STATE_REGISTERED 1 57 #define PNV_PHP_STATE_POPULATED 2 58 #define PNV_PHP_STATE_OFFLINE 3 59 int state; 60 int irq; 61 struct workqueue_struct *wq; 62 struct device_node *dn; 63 struct pci_dev *pdev; 64 struct pci_bus *bus; 65 bool power_state_check; 66 u8 attention_state; 67 void *fdt; 68 void *dt; 69 struct of_changeset ocs; 70 struct pnv_php_slot *parent; 71 struct list_head children; 72 struct list_head link; 73 }; 74 extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn); 75 extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot, 76 uint8_t state); 77 78 #endif 79
