LXR linux/arch/powerpc/include/asm/pnv-pci.h

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