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numam-dpdk/drivers/crypto/virtio/virtio_pci.h
Thomas Monjalon 924e6b7634 drivers: replace page size definitions with function 
The page size is often retrieved from the macro PAGE_SIZE.
If PAGE_SIZE is not defined, it is either using hard coded default,
or getting the system value from the UNIX-only function sysconf().

Such definitions are replaced with the generic function
rte_mem_page_size() defined for each supported OS.

Removing PAGE_SIZE definitions will fix dlb drivers for musl libc,
because #ifdef checks were missing, causing redefinition errors.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Andrew Boyer <aboyer@pensando.io>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
Acked-by: David Marchand <david.marchand@redhat.com>
Acked-by: Timothy McDaniel <timothy.mcdaniel@intel.com>
2021-03-23 08:41:05 +01:00

255 lines
8.3 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 HUAWEI TECHNOLOGIES CO., LTD.
*/
#ifndef _VIRTIO_PCI_H_
#define _VIRTIO_PCI_H_
#include <stdint.h>
#include <rte_eal_paging.h>
#include <rte_pci.h>
#include <rte_bus_pci.h>
#include <rte_cryptodev.h>
#include "virtio_crypto.h"
struct virtqueue;
/* VirtIO PCI vendor/device ID. */
#define VIRTIO_CRYPTO_PCI_VENDORID 0x1AF4
#define VIRTIO_CRYPTO_PCI_DEVICEID 0x1054
/* VirtIO ABI version, this must match exactly. */
#define VIRTIO_PCI_ABI_VERSION 0
/*
* VirtIO Header, located in BAR 0.
*/
#define VIRTIO_PCI_HOST_FEATURES 0 /* host's supported features (32bit, RO)*/
#define VIRTIO_PCI_GUEST_FEATURES 4 /* guest's supported features (32, RW) */
#define VIRTIO_PCI_QUEUE_PFN 8 /* physical address of VQ (32, RW) */
#define VIRTIO_PCI_QUEUE_NUM 12 /* number of ring entries (16, RO) */
#define VIRTIO_PCI_QUEUE_SEL 14 /* current VQ selection (16, RW) */
#define VIRTIO_PCI_QUEUE_NOTIFY 16 /* notify host regarding VQ (16, RW) */
#define VIRTIO_PCI_STATUS 18 /* device status register (8, RW) */
#define VIRTIO_PCI_ISR 19 /* interrupt status register, reading
* also clears the register (8, RO)
*/
/* Only if MSIX is enabled: */
/* configuration change vector (16, RW) */
#define VIRTIO_MSI_CONFIG_VECTOR 20
/* vector for selected VQ notifications */
#define VIRTIO_MSI_QUEUE_VECTOR 22
/* The bit of the ISR which indicates a device has an interrupt. */
#define VIRTIO_PCI_ISR_INTR 0x1
/* The bit of the ISR which indicates a device configuration change. */
#define VIRTIO_PCI_ISR_CONFIG 0x2
/* Vector value used to disable MSI for queue. */
#define VIRTIO_MSI_NO_VECTOR 0xFFFF
/* Status byte for guest to report progress. */
#define VIRTIO_CONFIG_STATUS_RESET 0x00
#define VIRTIO_CONFIG_STATUS_ACK 0x01
#define VIRTIO_CONFIG_STATUS_DRIVER 0x02
#define VIRTIO_CONFIG_STATUS_DRIVER_OK 0x04
#define VIRTIO_CONFIG_STATUS_FEATURES_OK 0x08
#define VIRTIO_CONFIG_STATUS_FAILED 0x80
/*
* Each virtqueue indirect descriptor list must be physically contiguous.
* To allow us to malloc(9) each list individually, limit the number
* supported to what will fit in one page. With 4KB pages, this is a limit
* of 256 descriptors. If there is ever a need for more, we can switch to
* contigmalloc(9) for the larger allocations, similar to what
* bus_dmamem_alloc(9) does.
*
* Note the sizeof(struct vring_desc) is 16 bytes.
*/
#define VIRTIO_MAX_INDIRECT ((int) (rte_mem_page_size() / 16))
/* Do we get callbacks when the ring is completely used, even if we've
* suppressed them?
*/
#define VIRTIO_F_NOTIFY_ON_EMPTY 24
/* Can the device handle any descriptor layout? */
#define VIRTIO_F_ANY_LAYOUT 27
/* We support indirect buffer descriptors */
#define VIRTIO_RING_F_INDIRECT_DESC 28
#define VIRTIO_F_VERSION_1 32
#define VIRTIO_F_IOMMU_PLATFORM 33
/* The Guest publishes the used index for which it expects an interrupt
* at the end of the avail ring. Host should ignore the avail->flags field.
*/
/* The Host publishes the avail index for which it expects a kick
* at the end of the used ring. Guest should ignore the used->flags field.
*/
#define VIRTIO_RING_F_EVENT_IDX 29
/* Common configuration */
#define VIRTIO_PCI_CAP_COMMON_CFG 1
/* Notifications */
#define VIRTIO_PCI_CAP_NOTIFY_CFG 2
/* ISR Status */
#define VIRTIO_PCI_CAP_ISR_CFG 3
/* Device specific configuration */
#define VIRTIO_PCI_CAP_DEVICE_CFG 4
/* PCI configuration access */
#define VIRTIO_PCI_CAP_PCI_CFG 5
/* This is the PCI capability header: */
struct virtio_pci_cap {
uint8_t cap_vndr; /* Generic PCI field: PCI_CAP_ID_VNDR */
uint8_t cap_next; /* Generic PCI field: next ptr. */
uint8_t cap_len; /* Generic PCI field: capability length */
uint8_t cfg_type; /* Identifies the structure. */
uint8_t bar; /* Where to find it. */
uint8_t padding[3]; /* Pad to full dword. */
uint32_t offset; /* Offset within bar. */
uint32_t length; /* Length of the structure, in bytes. */
};
struct virtio_pci_notify_cap {
struct virtio_pci_cap cap;
uint32_t notify_off_multiplier; /* Multiplier for queue_notify_off. */
};
/* Fields in VIRTIO_PCI_CAP_COMMON_CFG: */
struct virtio_pci_common_cfg {
/* About the whole device. */
uint32_t device_feature_select; /* read-write */
uint32_t device_feature; /* read-only */
uint32_t guest_feature_select; /* read-write */
uint32_t guest_feature; /* read-write */
uint16_t msix_config; /* read-write */
uint16_t num_queues; /* read-only */
uint8_t device_status; /* read-write */
uint8_t config_generation; /* read-only */
/* About a specific virtqueue. */
uint16_t queue_select; /* read-write */
uint16_t queue_size; /* read-write, power of 2. */
uint16_t queue_msix_vector; /* read-write */
uint16_t queue_enable; /* read-write */
uint16_t queue_notify_off; /* read-only */
uint32_t queue_desc_lo; /* read-write */
uint32_t queue_desc_hi; /* read-write */
uint32_t queue_avail_lo; /* read-write */
uint32_t queue_avail_hi; /* read-write */
uint32_t queue_used_lo; /* read-write */
uint32_t queue_used_hi; /* read-write */
};
struct virtio_crypto_hw;
struct virtio_pci_ops {
void (*read_dev_cfg)(struct virtio_crypto_hw *hw, size_t offset,
void *dst, int len);
void (*write_dev_cfg)(struct virtio_crypto_hw *hw, size_t offset,
const void *src, int len);
void (*reset)(struct virtio_crypto_hw *hw);
uint8_t (*get_status)(struct virtio_crypto_hw *hw);
void (*set_status)(struct virtio_crypto_hw *hw, uint8_t status);
uint64_t (*get_features)(struct virtio_crypto_hw *hw);
void (*set_features)(struct virtio_crypto_hw *hw, uint64_t features);
uint8_t (*get_isr)(struct virtio_crypto_hw *hw);
uint16_t (*set_config_irq)(struct virtio_crypto_hw *hw, uint16_t vec);
uint16_t (*set_queue_irq)(struct virtio_crypto_hw *hw,
struct virtqueue *vq, uint16_t vec);
uint16_t (*get_queue_num)(struct virtio_crypto_hw *hw,
uint16_t queue_id);
int (*setup_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq);
void (*del_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq);
void (*notify_queue)(struct virtio_crypto_hw *hw, struct virtqueue *vq);
};
struct virtio_crypto_hw {
/* control queue */
struct virtqueue *cvq;
uint16_t dev_id;
uint16_t max_dataqueues;
uint64_t req_guest_features;
uint64_t guest_features;
uint8_t use_msix;
uint8_t modern;
uint32_t notify_off_multiplier;
uint8_t *isr;
uint16_t *notify_base;
struct virtio_pci_common_cfg *common_cfg;
struct virtio_crypto_config *dev_cfg;
const struct rte_cryptodev_capabilities *virtio_dev_capabilities;
};
/*
* While virtio_crypto_hw is stored in shared memory, this structure stores
* some infos that may vary in the multiple process model locally.
* For example, the vtpci_ops pointer.
*/
struct virtio_hw_internal {
const struct virtio_pci_ops *vtpci_ops;
struct rte_pci_ioport io;
};
#define VTPCI_OPS(hw) (crypto_virtio_hw_internal[(hw)->dev_id].vtpci_ops)
#define VTPCI_IO(hw) (&crypto_virtio_hw_internal[(hw)->dev_id].io)
extern struct virtio_hw_internal crypto_virtio_hw_internal[RTE_MAX_VIRTIO_CRYPTO];
/*
* How many bits to shift physical queue address written to QUEUE_PFN.
* 12 is historical, and due to x86 page size.
*/
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
/* The alignment to use between consumer and producer parts of vring. */
#define VIRTIO_PCI_VRING_ALIGN 4096
enum virtio_msix_status {
VIRTIO_MSIX_NONE = 0,
VIRTIO_MSIX_DISABLED = 1,
VIRTIO_MSIX_ENABLED = 2
};
static inline int
vtpci_with_feature(struct virtio_crypto_hw *hw, uint64_t bit)
{
return (hw->guest_features & (1ULL << bit)) != 0;
}
/*
* Function declaration from virtio_pci.c
*/
int vtpci_cryptodev_init(struct rte_pci_device *dev,
struct virtio_crypto_hw *hw);
void vtpci_cryptodev_reset(struct virtio_crypto_hw *hw);
void vtpci_cryptodev_reinit_complete(struct virtio_crypto_hw *hw);
uint8_t vtpci_cryptodev_get_status(struct virtio_crypto_hw *hw);
void vtpci_cryptodev_set_status(struct virtio_crypto_hw *hw, uint8_t status);
uint64_t vtpci_cryptodev_negotiate_features(struct virtio_crypto_hw *hw,
uint64_t host_features);
void vtpci_write_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset,
const void *src, int length);
void vtpci_read_cryptodev_config(struct virtio_crypto_hw *hw, size_t offset,
void *dst, int length);
uint8_t vtpci_cryptodev_isr(struct virtio_crypto_hw *hw);
#endif /* _VIRTIO_PCI_H_ */
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