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From: Liu Yi L <yi.l.liu@intel.com>
To: alex.williamson@redhat.com, kwankhede@nvidia.com
Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	kevin.tian@intel.com, joro@8bytes.org, peterx@redhat.com,
	baolu.lu@linux.intel.com, Liu Yi L <yi.l.liu@intel.com>
Subject: [PATCH v4 08/12] vfio_pci: duplicate vfio_pci_private.h to include/linux
Date: Tue,  7 Jan 2020 20:01:45 +0800
Message-ID: <1578398509-26453-9-git-send-email-yi.l.liu@intel.com> (raw)
In-Reply-To: <1578398509-26453-1-git-send-email-yi.l.liu@intel.com>

This patch copies drivers/vfio/pci/vfio_pci_private.h to include/linux/
for preparation of splitting vfio_pci_private.h into a private header
file and a common header file, which is to support common vfio_pci code
sharing outside drivers/vfio/pci/. No code change in this file copy.

Cc: Kevin Tian <kevin.tian@intel.com>
Cc: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Liu Yi L <yi.l.liu@intel.com>
---
 include/linux/vfio_pci_common.h | 228 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 228 insertions(+)
 create mode 100644 include/linux/vfio_pci_common.h

diff --git a/include/linux/vfio_pci_common.h b/include/linux/vfio_pci_common.h
new file mode 100644
index 0000000..499dd04
--- /dev/null
+++ b/include/linux/vfio_pci_common.h
@@ -0,0 +1,228 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2012 Red Hat, Inc.  All rights reserved.
+ *     Author: Alex Williamson <alex.williamson@redhat.com>
+ *
+ * Derived from original vfio:
+ * Copyright 2010 Cisco Systems, Inc.  All rights reserved.
+ * Author: Tom Lyon, pugs@cisco.com
+ */
+
+#include <linux/mutex.h>
+#include <linux/pci.h>
+#include <linux/irqbypass.h>
+#include <linux/types.h>
+
+#ifndef VFIO_PCI_PRIVATE_H
+#define VFIO_PCI_PRIVATE_H
+
+#define VFIO_PCI_OFFSET_SHIFT   40
+
+#define VFIO_PCI_OFFSET_TO_INDEX(off)	(off >> VFIO_PCI_OFFSET_SHIFT)
+#define VFIO_PCI_INDEX_TO_OFFSET(index)	((u64)(index) << VFIO_PCI_OFFSET_SHIFT)
+#define VFIO_PCI_OFFSET_MASK	(((u64)(1) << VFIO_PCI_OFFSET_SHIFT) - 1)
+
+/* Special capability IDs predefined access */
+#define PCI_CAP_ID_INVALID		0xFF	/* default raw access */
+#define PCI_CAP_ID_INVALID_VIRT		0xFE	/* default virt access */
+
+/* Cap maximum number of ioeventfds per device (arbitrary) */
+#define VFIO_PCI_IOEVENTFD_MAX		1000
+
+struct vfio_pci_ioeventfd {
+	struct list_head	next;
+	struct virqfd		*virqfd;
+	void __iomem		*addr;
+	uint64_t		data;
+	loff_t			pos;
+	int			bar;
+	int			count;
+};
+
+struct vfio_pci_irq_ctx {
+	struct eventfd_ctx	*trigger;
+	struct virqfd		*unmask;
+	struct virqfd		*mask;
+	char			*name;
+	bool			masked;
+	struct irq_bypass_producer	producer;
+};
+
+struct vfio_pci_device;
+struct vfio_pci_region;
+
+struct vfio_pci_regops {
+	size_t	(*rw)(struct vfio_pci_device *vdev, char __user *buf,
+		      size_t count, loff_t *ppos, bool iswrite);
+	void	(*release)(struct vfio_pci_device *vdev,
+			   struct vfio_pci_region *region);
+	int	(*mmap)(struct vfio_pci_device *vdev,
+			struct vfio_pci_region *region,
+			struct vm_area_struct *vma);
+	int	(*add_capability)(struct vfio_pci_device *vdev,
+				  struct vfio_pci_region *region,
+				  struct vfio_info_cap *caps);
+};
+
+struct vfio_pci_region {
+	u32				type;
+	u32				subtype;
+	const struct vfio_pci_regops	*ops;
+	void				*data;
+	size_t				size;
+	u32				flags;
+};
+
+struct vfio_pci_dummy_resource {
+	struct resource		resource;
+	int			index;
+	struct list_head	res_next;
+};
+
+struct vfio_pci_reflck {
+	struct kref		kref;
+	struct mutex		lock;
+};
+
+struct vfio_pci_device {
+	struct pci_dev		*pdev;
+	void __iomem		*barmap[PCI_STD_NUM_BARS];
+	bool			bar_mmap_supported[PCI_STD_NUM_BARS];
+	u8			*pci_config_map;
+	u8			*vconfig;
+	struct perm_bits	*msi_perm;
+	spinlock_t		irqlock;
+	struct mutex		igate;
+	struct vfio_pci_irq_ctx	*ctx;
+	int			num_ctx;
+	int			irq_type;
+	int			num_regions;
+	struct vfio_pci_region	*region;
+	u8			msi_qmax;
+	u8			msix_bar;
+	u16			msix_size;
+	u32			msix_offset;
+	u32			rbar[7];
+	bool			pci_2_3;
+	bool			virq_disabled;
+	bool			reset_works;
+	bool			extended_caps;
+	bool			bardirty;
+	bool			has_vga;
+	bool			needs_reset;
+	bool			nointx;
+	bool			needs_pm_restore;
+	struct pci_saved_state	*pci_saved_state;
+	struct pci_saved_state	*pm_save;
+	struct vfio_pci_reflck	*reflck;
+	int			refcnt;
+	int			ioeventfds_nr;
+	struct eventfd_ctx	*err_trigger;
+	struct eventfd_ctx	*req_trigger;
+	struct list_head	dummy_resources_list;
+	struct mutex		ioeventfds_lock;
+	struct list_head	ioeventfds_list;
+	bool			nointxmask;
+#ifdef CONFIG_VFIO_PCI_VGA
+	bool			disable_vga;
+#endif
+	bool			disable_idle_d3;
+};
+
+#define is_intx(vdev) (vdev->irq_type == VFIO_PCI_INTX_IRQ_INDEX)
+#define is_msi(vdev) (vdev->irq_type == VFIO_PCI_MSI_IRQ_INDEX)
+#define is_msix(vdev) (vdev->irq_type == VFIO_PCI_MSIX_IRQ_INDEX)
+#define is_irq_none(vdev) (!(is_intx(vdev) || is_msi(vdev) || is_msix(vdev)))
+#define irq_is(vdev, type) (vdev->irq_type == type)
+
+extern const struct pci_error_handlers vfio_err_handlers;
+
+static inline bool vfio_pci_is_vga(struct pci_dev *pdev)
+{
+	return (pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA;
+}
+
+static inline bool vfio_vga_disabled(struct vfio_pci_device *vdev)
+{
+#ifdef CONFIG_VFIO_PCI_VGA
+	return vdev->disable_vga;
+#else
+	return true;
+#endif
+}
+
+extern void vfio_pci_refresh_config(struct vfio_pci_device *vdev,
+				bool nointxmask, bool disable_idle_d3);
+
+extern void vfio_pci_intx_mask(struct vfio_pci_device *vdev);
+extern void vfio_pci_intx_unmask(struct vfio_pci_device *vdev);
+
+extern int vfio_pci_set_irqs_ioctl(struct vfio_pci_device *vdev,
+				   uint32_t flags, unsigned index,
+				   unsigned start, unsigned count, void *data);
+
+extern ssize_t vfio_pci_config_rw(struct vfio_pci_device *vdev,
+				  char __user *buf, size_t count,
+				  loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_bar_rw(struct vfio_pci_device *vdev, char __user *buf,
+			       size_t count, loff_t *ppos, bool iswrite);
+
+extern ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf,
+			       size_t count, loff_t *ppos, bool iswrite);
+
+extern long vfio_pci_ioeventfd(struct vfio_pci_device *vdev, loff_t offset,
+			       uint64_t data, int count, int fd);
+
+extern int vfio_pci_init_perm_bits(void);
+extern void vfio_pci_uninit_perm_bits(void);
+
+extern int vfio_config_init(struct vfio_pci_device *vdev);
+extern void vfio_config_free(struct vfio_pci_device *vdev);
+
+extern int vfio_pci_register_dev_region(struct vfio_pci_device *vdev,
+					unsigned int type, unsigned int subtype,
+					const struct vfio_pci_regops *ops,
+					size_t size, u32 flags, void *data);
+
+extern int vfio_pci_set_power_state(struct vfio_pci_device *vdev,
+				    pci_power_t state);
+extern unsigned int vfio_pci_set_vga_decode(void *opaque, bool single_vga);
+extern int vfio_pci_enable(struct vfio_pci_device *vdev);
+extern void vfio_pci_disable(struct vfio_pci_device *vdev);
+extern long vfio_pci_ioctl(void *device_data,
+			unsigned int cmd, unsigned long arg);
+extern ssize_t vfio_pci_read(void *device_data, char __user *buf,
+			size_t count, loff_t *ppos);
+extern ssize_t vfio_pci_write(void *device_data, const char __user *buf,
+			size_t count, loff_t *ppos);
+extern int vfio_pci_mmap(void *device_data, struct vm_area_struct *vma);
+extern void vfio_pci_request(void *device_data, unsigned int count);
+extern void vfio_pci_fill_ids(char *ids, struct pci_driver *driver);
+extern int vfio_pci_reflck_attach(struct vfio_pci_device *vdev);
+extern void vfio_pci_reflck_put(struct vfio_pci_reflck *reflck);
+extern void vfio_pci_probe_power_state(struct vfio_pci_device *vdev);
+
+#ifdef CONFIG_VFIO_PCI_IGD
+extern int vfio_pci_igd_init(struct vfio_pci_device *vdev);
+#else
+static inline int vfio_pci_igd_init(struct vfio_pci_device *vdev)
+{
+	return -ENODEV;
+}
+#endif
+#ifdef CONFIG_VFIO_PCI_NVLINK2
+extern int vfio_pci_nvdia_v100_nvlink2_init(struct vfio_pci_device *vdev);
+extern int vfio_pci_ibm_npu2_init(struct vfio_pci_device *vdev);
+#else
+static inline int vfio_pci_nvdia_v100_nvlink2_init(struct vfio_pci_device *vdev)
+{
+	return -ENODEV;
+}
+
+static inline int vfio_pci_ibm_npu2_init(struct vfio_pci_device *vdev)
+{
+	return -ENODEV;
+}
+#endif
+#endif /* VFIO_PCI_PRIVATE_H */
-- 
2.7.4


  parent reply index

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-07 12:01 [PATCH v4 00/12] vfio_pci: wrap pci device as a mediated device Liu Yi L
2020-01-07 12:01 ` [PATCH v4 01/12] vfio_pci: refine user config reference in vfio-pci module Liu Yi L
2020-01-09 22:48   ` Alex Williamson
2020-01-16 12:19     ` Liu, Yi L
2020-01-07 12:01 ` [PATCH v4 02/12] vfio_pci: move vfio_pci_is_vga/vfio_vga_disabled to header file Liu Yi L
2020-01-15 10:43   ` Cornelia Huck
2020-01-16 12:46     ` Liu, Yi L
2020-01-07 12:01 ` [PATCH v4 03/12] vfio_pci: refine vfio_pci_driver reference in vfio_pci.c Liu Yi L
2020-01-09 22:48   ` Alex Williamson
2020-01-10  7:35     ` Liu, Yi L
2020-01-07 12:01 ` [PATCH v4 04/12] vfio_pci: make common functions be extern Liu Yi L
2020-01-15 10:56   ` Cornelia Huck
2020-01-16 12:48     ` Liu, Yi L
2020-01-07 12:01 ` [PATCH v4 05/12] vfio_pci: duplicate vfio_pci.c Liu Yi L
2020-01-15 11:03   ` Cornelia Huck
2020-01-15 15:12     ` Alex Williamson
2020-01-07 12:01 ` [PATCH v4 06/12] vfio_pci: shrink vfio_pci_common.c Liu Yi L
2020-01-07 12:01 ` [PATCH v4 07/12] vfio_pci: shrink vfio_pci.c Liu Yi L
2020-01-08 11:24   ` kbuild test robot
2020-01-09 22:48   ` Alex Williamson
2020-01-16 12:42     ` Liu, Yi L
2020-01-07 12:01 ` Liu Yi L [this message]
2020-01-07 12:01 ` [PATCH v4 09/12] vfio: split vfio_pci_private.h into two files Liu Yi L
2020-01-09 22:48   ` Alex Williamson
2020-01-16 11:59     ` Liu, Yi L
2020-01-07 12:01 ` [PATCH v4 10/12] vfio: build vfio_pci_common.c into a kernel module Liu Yi L
2020-01-07 12:01 ` [PATCH v4 11/12] samples: add vfio-mdev-pci driver Liu Yi L
2020-01-09 22:48   ` Alex Williamson
2020-01-16 12:33     ` Liu, Yi L
2020-01-16 21:24       ` Alex Williamson
2020-01-18 14:25         ` Liu, Yi L
2020-01-20 21:07           ` Alex Williamson
2020-01-21  7:43             ` Tian, Kevin
2020-01-21  8:43               ` Yan Zhao
2020-01-21 20:04                 ` Alex Williamson
2020-01-21 21:54                   ` Yan Zhao
2020-01-23 23:33                     ` Alex Williamson
2020-01-31  2:26                       ` Yan Zhao
2020-01-15 12:30   ` Cornelia Huck
2020-01-16 13:23     ` Liu, Yi L
2020-01-16 17:40       ` Cornelia Huck
2020-01-18 14:23         ` Liu, Yi L
2020-01-20  8:55           ` Cornelia Huck
2020-01-07 12:01 ` [PATCH v4 12/12] samples: refine " Liu Yi L

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