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gerrit-public.fairphone.software / kernel / msm-4.9 / 4ee11c1a9f7cc20026bb66ac624533310a605312 / . / arch / powerpc / include / asm / pnv-pci.h
blob: 1b46b52d3212f40ca4038750871cf45e98d33e00 [file] [log] [blame]
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]1/*
2 * Copyright 2014 IBM Corp.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version
7 * 2 of the License, or (at your option) any later version.
8 */
9
10#ifndef _ASM_PNV_PCI_H
11#define _ASM_PNV_PCI_H
12
13#include <linux/pci.h>
Andrew Donnellan89379f12016-07-14 07:17:12 +1000[diff] [blame]14#include <linux/pci_hotplug.h>
Suresh Warrier4ee11c12016-08-19 15:35:49 +1000[diff] [blame^]15#include <linux/irq.h>
Michael Neulingec249dd2015-05-27 16:07:16 +1000[diff] [blame]16#include <misc/cxl-base.h>
Gavin Shanea0d8562016-05-20 16:41:41 +1000[diff] [blame]17#include <asm/opal-api.h>
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]18
Gavin Shanebe22532016-05-20 16:41:38 +1000[diff] [blame]19#define PCI_SLOT_ID_PREFIX 0x8000000000000000
20#define PCI_SLOT_ID(phb_id, bdfn) \
21 (PCI_SLOT_ID_PREFIX | ((uint64_t)(bdfn) << 16) | (phb_id))
22
Gavin Shan7e19bf32016-05-20 16:41:40 +1000[diff] [blame]23extern int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id);
Gavin Shanea0d8562016-05-20 16:41:41 +1000[diff] [blame]24extern int pnv_pci_get_device_tree(uint32_t phandle, void *buf, uint64_t len);
25extern int pnv_pci_get_presence_state(uint64_t id, uint8_t *state);
26extern int pnv_pci_get_power_state(uint64_t id, uint8_t *state);
27extern int pnv_pci_set_power_state(uint64_t id, uint8_t state,
28 struct opal_msg *msg);
Gavin Shan7e19bf32016-05-20 16:41:40 +1000[diff] [blame]29
Ryan Grimm1212aa12015-01-19 11:52:50 -0600[diff] [blame]30int pnv_phb_to_cxl_mode(struct pci_dev *dev, uint64_t mode);
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]31int pnv_cxl_ioda_msi_setup(struct pci_dev *dev, unsigned int hwirq,
32 unsigned int virq);
33int pnv_cxl_alloc_hwirqs(struct pci_dev *dev, int num);
34void pnv_cxl_release_hwirqs(struct pci_dev *dev, int hwirq, int num);
35int pnv_cxl_get_irq_count(struct pci_dev *dev);
Ryan Grimm6f963ec2015-01-28 20:16:04 -0600[diff] [blame]36struct device_node *pnv_pci_get_phb_node(struct pci_dev *dev);
Suresh Warrier4ee11c12016-08-19 15:35:49 +1000[diff] [blame^]37int64_t pnv_opal_pci_msi_eoi(struct irq_chip *chip, unsigned int hw_irq);
38bool is_pnv_opal_msi(struct irq_chip *chip);
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]39
40#ifdef CONFIG_CXL_BASE
41int pnv_cxl_alloc_hwirq_ranges(struct cxl_irq_ranges *irqs,
42 struct pci_dev *dev, int num);
43void pnv_cxl_release_hwirq_ranges(struct cxl_irq_ranges *irqs,
44 struct pci_dev *dev);
Ian Munsie4361b032016-07-14 07:17:06 +1000[diff] [blame]45
46/* Support for the cxl kernel api on the real PHB (instead of vPHB) */
47int pnv_cxl_enable_phb_kernel_api(struct pci_controller *hose, bool enable);
48bool pnv_pci_on_cxl_phb(struct pci_dev *dev);
49struct cxl_afu *pnv_cxl_phb_to_afu(struct pci_controller *hose);
50void pnv_cxl_phb_set_peer_afu(struct pci_dev *dev, struct cxl_afu *afu);
51
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]52#endif
53
Andrew Donnellan89379f12016-07-14 07:17:12 +1000[diff] [blame]54struct pnv_php_slot {
55 struct hotplug_slot slot;
56 struct hotplug_slot_info slot_info;
57 uint64_t id;
58 char *name;
59 int slot_no;
60 struct kref kref;
61#define PNV_PHP_STATE_INITIALIZED 0
62#define PNV_PHP_STATE_REGISTERED 1
63#define PNV_PHP_STATE_POPULATED 2
64#define PNV_PHP_STATE_OFFLINE 3
65 int state;
66 struct device_node *dn;
67 struct pci_dev *pdev;
68 struct pci_bus *bus;
69 bool power_state_check;
70 void *fdt;
71 void *dt;
72 struct of_changeset ocs;
73 struct pnv_php_slot *parent;
74 struct list_head children;
75 struct list_head link;
76};
77extern struct pnv_php_slot *pnv_php_find_slot(struct device_node *dn);
78extern int pnv_php_set_slot_power_state(struct hotplug_slot *slot,
79 uint8_t state);
80
Ian Munsie80c49c72014-10-08 19:54:57 +1100[diff] [blame]81#endif