^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /****************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Driver for Solarflare network controllers and boards
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright 2010-2012 Solarflare Communications Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef _VFDI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #define _VFDI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * DOC: Virtual Function Driver Interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This file contains software structures used to form a two way
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * communication channel between the VF driver and the PF driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * named Virtual Function Driver Interface (VFDI).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * For the purposes of VFDI, a page is a memory region with size and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * alignment of 4K. All addresses are DMA addresses to be used within
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * the domain of the relevant VF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * The only hardware-defined channels for a VF driver to communicate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * with the PF driver are the event mailboxes (%FR_CZ_USR_EV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * registers). Writing to these registers generates an event with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * EV_CODE = EV_CODE_USR_EV, USER_QID set to the index of the mailbox
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * and USER_EV_REG_VALUE set to the value written. The PF driver may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * direct or disable delivery of these events by setting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * %FR_CZ_USR_EV_CFG.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * The PF driver can send arbitrary events to arbitrary event queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * However, for consistency, VFDI events from the PF are defined to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * follow the same form and be sent to the first event queue assigned
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * to the VF while that queue is enabled by the VF driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * The general form of the variable bits of VFDI events is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * 0 16 24 31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * | DATA | TYPE | SEQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * SEQ is a sequence number which should be incremented by 1 (modulo
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * 256) for each event. The sequence numbers used in each direction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * are independent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * The VF submits requests of type &struct vfdi_req by sending the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * address of the request (ADDR) in a series of 4 events:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * 0 16 24 31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * | ADDR[0:15] | VFDI_EV_TYPE_REQ_WORD0 | SEQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * | ADDR[16:31] | VFDI_EV_TYPE_REQ_WORD1 | SEQ+1 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * | ADDR[32:47] | VFDI_EV_TYPE_REQ_WORD2 | SEQ+2 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * | ADDR[48:63] | VFDI_EV_TYPE_REQ_WORD3 | SEQ+3 |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) * The address must be page-aligned. After receiving such a valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) * series of events, the PF driver will attempt to read the request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * and write a response to the same address. In case of an invalid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * sequence of events or a DMA error, there will be no response.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) * The VF driver may request that the PF driver writes status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * information into its domain asynchronously. After writing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * status, the PF driver will send an event of the form:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * 0 16 24 31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * | reserved | VFDI_EV_TYPE_STATUS | SEQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * In case the VF must be reset for any reason, the PF driver will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * send an event of the form:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * 0 16 24 31
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * | reserved | VFDI_EV_TYPE_RESET | SEQ |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * It is then the responsibility of the VF driver to request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * reinitialisation of its queues.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define VFDI_EV_SEQ_LBN 24
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) #define VFDI_EV_SEQ_WIDTH 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) #define VFDI_EV_TYPE_LBN 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define VFDI_EV_TYPE_WIDTH 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define VFDI_EV_TYPE_REQ_WORD0 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define VFDI_EV_TYPE_REQ_WORD1 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define VFDI_EV_TYPE_REQ_WORD2 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define VFDI_EV_TYPE_REQ_WORD3 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define VFDI_EV_TYPE_STATUS 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #define VFDI_EV_TYPE_RESET 5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) #define VFDI_EV_DATA_LBN 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) #define VFDI_EV_DATA_WIDTH 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct vfdi_endpoint {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) u8 mac_addr[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) __be16 tci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * enum vfdi_op - VFDI operation enumeration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @VFDI_OP_RESPONSE: Indicates a response to the request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @VFDI_OP_INIT_EVQ: Initialize SRAM entries and initialize an EVQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @VFDI_OP_INIT_RXQ: Initialize SRAM entries and initialize an RXQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * @VFDI_OP_INIT_TXQ: Initialize SRAM entries and initialize a TXQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @VFDI_OP_FINI_ALL_QUEUES: Flush all queues, finalize all queues, then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * finalize the SRAM entries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @VFDI_OP_INSERT_FILTER: Insert a MAC filter targeting the given RXQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) * @VFDI_OP_REMOVE_ALL_FILTERS: Remove all filters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * @VFDI_OP_SET_STATUS_PAGE: Set the DMA page(s) used for status updates
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) * from PF and write the initial status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * @VFDI_OP_CLEAR_STATUS_PAGE: Clear the DMA page(s) used for status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * updates from PF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) enum vfdi_op {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) VFDI_OP_RESPONSE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) VFDI_OP_INIT_EVQ = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) VFDI_OP_INIT_RXQ = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) VFDI_OP_INIT_TXQ = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) VFDI_OP_FINI_ALL_QUEUES = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) VFDI_OP_INSERT_FILTER = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) VFDI_OP_REMOVE_ALL_FILTERS = 6,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) VFDI_OP_SET_STATUS_PAGE = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) VFDI_OP_CLEAR_STATUS_PAGE = 8,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) VFDI_OP_LIMIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) /* Response codes for VFDI operations. Other values may be used in future. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define VFDI_RC_SUCCESS 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #define VFDI_RC_ENOMEM (-12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) #define VFDI_RC_EINVAL (-22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) #define VFDI_RC_EOPNOTSUPP (-95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define VFDI_RC_ETIMEDOUT (-110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * struct vfdi_req - Request from VF driver to PF driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) * @op: Operation code or response indicator, taken from &enum vfdi_op.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * @rc: Response code. Set to 0 on success or a negative error code on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @u.init_evq.index: Index of event queue to create.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * @u.init_evq.buf_count: Number of 4k buffers backing event queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @u.init_evq.addr: Array of length %u.init_evq.buf_count containing DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * address of each page backing the event queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @u.init_rxq.index: Index of receive queue to create.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @u.init_rxq.buf_count: Number of 4k buffers backing receive queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @u.init_rxq.evq: Instance of event queue to target receive events at.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @u.init_rxq.label: Label used in receive events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * @u.init_rxq.flags: Unused.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * @u.init_rxq.addr: Array of length %u.init_rxq.buf_count containing DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) * address of each page backing the receive queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * @u.init_txq.index: Index of transmit queue to create.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * @u.init_txq.buf_count: Number of 4k buffers backing transmit queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * @u.init_txq.evq: Instance of event queue to target transmit completion
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * events at.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * @u.init_txq.label: Label used in transmit completion events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * @u.init_txq.flags: Checksum offload flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * @u.init_txq.addr: Array of length %u.init_txq.buf_count containing DMA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * address of each page backing the transmit queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @u.mac_filter.rxq: Insert MAC filter at VF local address/VLAN targeting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * all traffic at this receive queue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) * @u.mac_filter.flags: MAC filter flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * @u.set_status_page.dma_addr: Base address for the &struct vfdi_status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * This address must be page-aligned and the PF may write up to a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * whole page (allowing for extension of the structure).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) * @u.set_status_page.peer_page_count: Number of additional pages the VF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) * has provided into which peer addresses may be DMAd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * @u.set_status_page.peer_page_addr: Array of DMA addresses of pages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * If the number of peers exceeds 256, then the VF must provide
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) * additional pages in this array. The PF will then DMA up to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * 512 vfdi_endpoint structures into each page. These addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * must be page-aligned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct vfdi_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) u32 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) u32 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) s32 rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) u32 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) u32 buf_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) u64 addr[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) } init_evq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) u32 buf_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) u32 evq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) u32 label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) #define VFDI_RXQ_FLAG_SCATTER_EN 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) u32 reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) u64 addr[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) } init_rxq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) u32 index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) u32 buf_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) u32 evq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u32 label;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) #define VFDI_TXQ_FLAG_IP_CSUM_DIS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) #define VFDI_TXQ_FLAG_TCPUDP_CSUM_DIS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) u32 reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) u64 addr[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) } init_txq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) u32 rxq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) #define VFDI_MAC_FILTER_FLAG_RSS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) #define VFDI_MAC_FILTER_FLAG_SCATTER 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) } mac_filter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u64 dma_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) u64 peer_page_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) u64 peer_page_addr[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) } set_status_page;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) } u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * struct vfdi_status - Status provided by PF driver to VF driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * @generation_start: A generation count DMA'd to VF *before* the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * rest of the structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * @generation_end: A generation count DMA'd to VF *after* the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * rest of the structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * @version: Version of this structure; currently set to 1. Later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * versions must either be layout-compatible or only be sent to VFs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) * that specifically request them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * @length: Total length of this structure including embedded tables
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * @vi_scale: log2 the number of VIs available on this VF. This quantity
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * is used by the hardware for register decoding.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * @max_tx_channels: The maximum number of transmit queues the VF can use.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * @rss_rxq_count: The number of receive queues present in the shared RSS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) * indirection table.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * @peer_count: Total number of peers in the complete peer list. If larger
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * than ARRAY_SIZE(%peers), then the VF must provide sufficient
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) * additional pages each of which is filled with vfdi_endpoint structures.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) * @local: The MAC address and outer VLAN tag of *this* VF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * @peers: Table of peer addresses. The @tci fields in these structures
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * are currently unused and must be ignored. Additional peers are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * written into any additional pages provided by the VF.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @timer_quantum_ns: Timer quantum (nominal period between timer ticks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * for interrupt moderation timers, in nanoseconds. This member is only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * present if @length is sufficiently large.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct vfdi_status {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) u32 generation_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) u32 generation_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) u32 version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) u32 length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) u8 vi_scale;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) u8 max_tx_channels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) u8 rss_rxq_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) u8 reserved1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) u16 peer_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) u16 reserved2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) struct vfdi_endpoint local;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) struct vfdi_endpoint peers[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* Members below here extend version 1 of this structure */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) u32 timer_quantum_ns;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags