Pull UML updates from Richard Weinberger: - Support for optimized routines based on the host CPU - Support for PCI via virtio - Various fixes * tag 'for-linus-5.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: remove unneeded semicolon in um_arch.c um: Remove the repeated declaration um: fix error return code in winch_tramp() um: fix error return code in slip_open() um: Fix stack pointer alignment um: implement flush_cache_vmap/flush_cache_vunmap um: add a UML specific futex implementation um: enable the use of optimized xor routines in UML um: Add support for host CPU flags and alignment um: allow not setting extra rpaths in the linux binary um: virtio/pci: enable suspend/resume um: add PCI over virtio emulation driver um: irqs: allow invoking time-travel handler multiple times um: time-travel/signals: fix ndelay() in interrupt um: expose time-travel mode to userspace side um: export signals_enabled directly um: remove unused smp_sigio_handler() declaration lib: add iomem emulation (logic_iomem) um: allow disabling NO_IOMEM
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| 1 | /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */ | ||
| 2 | /* | ||
| 3 | * Copyright (C) 2021 Intel Corporation | ||
| 4 | * Author: Johannes Berg <johannes@sipsolutions.net> | ||
| 5 | */ | ||
| 6 | #ifndef _UAPI_LINUX_VIRTIO_PCIDEV_H | ||
| 7 | #define _UAPI_LINUX_VIRTIO_PCIDEV_H | ||
| 8 | #include <linux/types.h> | ||
| 9 | |||
| 10 | /** | ||
| 11 | * enum virtio_pcidev_ops - virtual PCI device operations | ||
| 12 | * @VIRTIO_PCIDEV_OP_CFG_READ: read config space, size is 1, 2, 4 or 8; | ||
| 13 | * the @data field should be filled in by the device (in little endian). | ||
| 14 | * @VIRTIO_PCIDEV_OP_CFG_WRITE: write config space, size is 1, 2, 4 or 8; | ||
| 15 | * the @data field contains the data to write (in little endian). | ||
| 16 | * @VIRTIO_PCIDEV_OP_BAR_READ: read BAR mem/pio, size can be variable; | ||
| 17 | * the @data field should be filled in by the device (in little endian). | ||
| 18 | * @VIRTIO_PCIDEV_OP_BAR_WRITE: write BAR mem/pio, size can be variable; | ||
| 19 | * the @data field contains the data to write (in little endian). | ||
| 20 | * @VIRTIO_PCIDEV_OP_MMIO_MEMSET: memset MMIO, size is variable but | ||
| 21 | * the @data field only has one byte (unlike @VIRTIO_PCIDEV_OP_MMIO_WRITE) | ||
| 22 | * @VIRTIO_PCIDEV_OP_INT: legacy INTx# pin interrupt, the addr field is 1-4 for | ||
| 23 | * the number | ||
| 24 | * @VIRTIO_PCIDEV_OP_MSI: MSI(-X) interrupt, this message basically transports | ||
| 25 | * the 16- or 32-bit write that would otherwise be done into memory, | ||
| 26 | * analogous to the write messages (@VIRTIO_PCIDEV_OP_MMIO_WRITE) above | ||
| 27 | * @VIRTIO_PCIDEV_OP_PME: Dummy message whose content is ignored (and should be | ||
| 28 | * all zeroes) to signal the PME# pin. | ||
| 29 | */ | ||
| 30 | enum virtio_pcidev_ops { | ||
| 31 | VIRTIO_PCIDEV_OP_RESERVED = 0, | ||
| 32 | VIRTIO_PCIDEV_OP_CFG_READ, | ||
| 33 | VIRTIO_PCIDEV_OP_CFG_WRITE, | ||
| 34 | VIRTIO_PCIDEV_OP_MMIO_READ, | ||
| 35 | VIRTIO_PCIDEV_OP_MMIO_WRITE, | ||
| 36 | VIRTIO_PCIDEV_OP_MMIO_MEMSET, | ||
| 37 | VIRTIO_PCIDEV_OP_INT, | ||
| 38 | VIRTIO_PCIDEV_OP_MSI, | ||
| 39 | VIRTIO_PCIDEV_OP_PME, | ||
| 40 | }; | ||
| 41 | |||
| 42 | /** | ||
| 43 | * struct virtio_pcidev_msg - virtio PCI device operation | ||
| 44 | * @op: the operation to do | ||
| 45 | * @bar: the bar (only with BAR read/write messages) | ||
| 46 | * @reserved: reserved | ||
| 47 | * @size: the size of the read/write (in bytes) | ||
| 48 | * @addr: the address to read/write | ||
| 49 | * @data: the data, normally @size long, but just one byte for | ||
| 50 | * %VIRTIO_PCIDEV_OP_MMIO_MEMSET | ||
| 51 | * | ||
| 52 | * Note: the fields are all in native (CPU) endian, however, the | ||
| 53 | * @data values will often be in little endian (see the ops above.) | ||
| 54 | */ | ||
| 55 | struct virtio_pcidev_msg { | ||
| 56 | __u8 op; | ||
| 57 | __u8 bar; | ||
| 58 | __u16 reserved; | ||
| 59 | __u32 size; | ||
| 60 | __u64 addr; | ||
| 61 | __u8 data[]; | ||
| 62 | }; | ||
| 63 | |||
| 64 | #endif /* _UAPI_LINUX_VIRTIO_PCIDEV_H */ | ||