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111 lines
3.3 KiB
111 lines
3.3 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _LINUX_VIRTIO_PCI_MODERN_H |
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#define _LINUX_VIRTIO_PCI_MODERN_H |
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#include <linux/pci.h> |
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#include <linux/virtio_pci.h> |
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struct virtio_pci_modern_device { |
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struct pci_dev *pci_dev; |
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struct virtio_pci_common_cfg __iomem *common; |
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/* Device-specific data (non-legacy mode) */ |
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void __iomem *device; |
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/* Base of vq notifications (non-legacy mode). */ |
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void __iomem *notify_base; |
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/* Where to read and clear interrupt */ |
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u8 __iomem *isr; |
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/* So we can sanity-check accesses. */ |
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size_t notify_len; |
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size_t device_len; |
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/* Capability for when we need to map notifications per-vq. */ |
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int notify_map_cap; |
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/* Multiply queue_notify_off by this value. (non-legacy mode). */ |
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u32 notify_offset_multiplier; |
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int modern_bars; |
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struct virtio_device_id id; |
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}; |
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/* |
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* Type-safe wrappers for io accesses. |
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* Use these to enforce at compile time the following spec requirement: |
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* |
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* The driver MUST access each field using the “natural” access |
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* method, i.e. 32-bit accesses for 32-bit fields, 16-bit accesses |
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* for 16-bit fields and 8-bit accesses for 8-bit fields. |
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*/ |
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static inline u8 vp_ioread8(const u8 __iomem *addr) |
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{ |
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return ioread8(addr); |
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} |
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static inline u16 vp_ioread16 (const __le16 __iomem *addr) |
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{ |
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return ioread16(addr); |
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} |
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static inline u32 vp_ioread32(const __le32 __iomem *addr) |
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{ |
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return ioread32(addr); |
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} |
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static inline void vp_iowrite8(u8 value, u8 __iomem *addr) |
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{ |
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iowrite8(value, addr); |
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} |
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static inline void vp_iowrite16(u16 value, __le16 __iomem *addr) |
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{ |
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iowrite16(value, addr); |
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} |
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static inline void vp_iowrite32(u32 value, __le32 __iomem *addr) |
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{ |
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iowrite32(value, addr); |
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} |
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static inline void vp_iowrite64_twopart(u64 val, |
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__le32 __iomem *lo, |
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__le32 __iomem *hi) |
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{ |
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vp_iowrite32((u32)val, lo); |
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vp_iowrite32(val >> 32, hi); |
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} |
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u64 vp_modern_get_features(struct virtio_pci_modern_device *mdev); |
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void vp_modern_set_features(struct virtio_pci_modern_device *mdev, |
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u64 features); |
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u32 vp_modern_generation(struct virtio_pci_modern_device *mdev); |
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u8 vp_modern_get_status(struct virtio_pci_modern_device *mdev); |
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void vp_modern_set_status(struct virtio_pci_modern_device *mdev, |
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u8 status); |
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u16 vp_modern_queue_vector(struct virtio_pci_modern_device *mdev, |
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u16 idx, u16 vector); |
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u16 vp_modern_config_vector(struct virtio_pci_modern_device *mdev, |
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u16 vector); |
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void vp_modern_queue_address(struct virtio_pci_modern_device *mdev, |
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u16 index, u64 desc_addr, u64 driver_addr, |
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u64 device_addr); |
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void vp_modern_set_queue_enable(struct virtio_pci_modern_device *mdev, |
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u16 idx, bool enable); |
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bool vp_modern_get_queue_enable(struct virtio_pci_modern_device *mdev, |
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u16 idx); |
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void vp_modern_set_queue_size(struct virtio_pci_modern_device *mdev, |
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u16 idx, u16 size); |
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u16 vp_modern_get_queue_size(struct virtio_pci_modern_device *mdev, |
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u16 idx); |
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u16 vp_modern_get_num_queues(struct virtio_pci_modern_device *mdev); |
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u16 vp_modern_get_queue_notify_off(struct virtio_pci_modern_device *mdev, |
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u16 idx); |
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void __iomem *vp_modern_map_capability(struct virtio_pci_modern_device *mdev, int off, |
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size_t minlen, |
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u32 align, |
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u32 start, u32 size, |
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size_t *len); |
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int vp_modern_probe(struct virtio_pci_modern_device *mdev); |
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void vp_modern_remove(struct virtio_pci_modern_device *mdev); |
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#endif
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