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#define PCI_PHB_SLOT_ID(phb_id)         (phb_id)
  19
  20extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
  21extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
  22extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
  23extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
  24extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
  25                                   struct opal_msg *msg);
  26
  27extern int pnv_pci_set_tunnel_bar(struct pci_dev *dev, uint64_t addr,
  28                                  int enable);
  29int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
  30int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
  31                           unsigned int virq);
  32int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
  33void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
  34int pnv_cxl_get_irq_count(struct pci_dev *dev);
  35struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
  36int64_t pnv_opal_pci_msi_eoi(struct irq_data *d);
  37bool is_pnv_opal_msi(struct irq_chip *chip);
  38
  39#ifdef CONFIG_CXL_BASE
  40int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
  41                               struct pci_dev *dev, int num);
  42void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
  43                                  struct pci_dev *dev);
  44#endif
  45
  46struct 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};
  73extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
  74extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
  75                                        uint8_t state);
  76
  77#endif
  78