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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms and conditions of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses the full gnu general public license is included in this distribution in the file called copying extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 12 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000434.160381502@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
356 lines
8.4 KiB
C
356 lines
8.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* FUJITSU Extended Socket Network Device driver
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* Copyright (c) 2015 FUJITSU LIMITED
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*/
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#ifndef FJES_HW_H_
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#define FJES_HW_H_
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#include <linux/netdevice.h>
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#include <linux/if_vlan.h>
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#include <linux/vmalloc.h>
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#include "fjes_regs.h"
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struct fjes_hw;
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#define EP_BUFFER_SUPPORT_VLAN_MAX 4
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#define EP_BUFFER_INFO_SIZE 4096
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#define FJES_DEBUG_PAGE_SIZE 4096
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#define FJES_DEBUG_BUFFER_SIZE (16 * FJES_DEBUG_PAGE_SIZE)
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#define FJES_DEVICE_RESET_TIMEOUT ((17 + 1) * 3 * 8) /* sec */
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#define FJES_COMMAND_REQ_TIMEOUT ((5 + 1) * 3 * 8) /* sec */
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#define FJES_COMMAND_REQ_BUFF_TIMEOUT (60 * 3) /* sec */
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#define FJES_COMMAND_EPSTOP_WAIT_TIMEOUT (1) /* sec */
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#define FJES_CMD_REQ_ERR_INFO_PARAM (0x0001)
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#define FJES_CMD_REQ_ERR_INFO_STATUS (0x0002)
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#define FJES_CMD_REQ_RES_CODE_NORMAL (0)
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#define FJES_CMD_REQ_RES_CODE_BUSY (1)
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#define FJES_ZONING_STATUS_DISABLE (0x00)
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#define FJES_ZONING_STATUS_ENABLE (0x01)
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#define FJES_ZONING_STATUS_INVALID (0xFF)
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#define FJES_ZONING_ZONE_TYPE_NONE (0xFF)
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#define FJES_TX_DELAY_SEND_NONE (0)
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#define FJES_TX_DELAY_SEND_PENDING (1)
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#define FJES_RX_STOP_REQ_NONE (0x0)
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#define FJES_RX_STOP_REQ_DONE (0x1)
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#define FJES_RX_STOP_REQ_REQUEST (0x2)
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#define FJES_RX_POLL_WORK (0x4)
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#define FJES_RX_MTU_CHANGING_DONE (0x8)
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#define EP_BUFFER_SIZE \
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(((sizeof(union ep_buffer_info) + (128 * (64 * 1024))) \
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/ EP_BUFFER_INFO_SIZE) * EP_BUFFER_INFO_SIZE)
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#define EP_RING_NUM(buffer_size, frame_size) \
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(u32)((buffer_size) / (frame_size))
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#define EP_RING_INDEX(_num, _max) (((_num) + (_max)) % (_max))
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#define EP_RING_INDEX_INC(_num, _max) \
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((_num) = EP_RING_INDEX((_num) + 1, (_max)))
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#define EP_RING_FULL(_head, _tail, _max) \
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(0 == EP_RING_INDEX(((_tail) - (_head)), (_max)))
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#define EP_RING_EMPTY(_head, _tail, _max) \
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(1 == EP_RING_INDEX(((_tail) - (_head)), (_max)))
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#define FJES_MTU_TO_BUFFER_SIZE(mtu) \
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(ETH_HLEN + VLAN_HLEN + (mtu) + ETH_FCS_LEN)
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#define FJES_MTU_TO_FRAME_SIZE(mtu) \
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(sizeof(struct esmem_frame) + FJES_MTU_TO_BUFFER_SIZE(mtu))
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#define FJES_MTU_DEFINE(size) \
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((size) - sizeof(struct esmem_frame) - \
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(ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN))
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#define FJES_DEV_COMMAND_INFO_REQ_LEN (4)
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#define FJES_DEV_COMMAND_INFO_RES_LEN(epnum) (8 + 2 * (epnum))
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#define FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(txb, rxb) \
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(24 + (8 * ((txb) / EP_BUFFER_INFO_SIZE + (rxb) / EP_BUFFER_INFO_SIZE)))
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#define FJES_DEV_COMMAND_SHARE_BUFFER_RES_LEN (8)
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#define FJES_DEV_COMMAND_UNSHARE_BUFFER_REQ_LEN (8)
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#define FJES_DEV_COMMAND_UNSHARE_BUFFER_RES_LEN (8)
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#define FJES_DEV_REQ_BUF_SIZE(maxep) \
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FJES_DEV_COMMAND_SHARE_BUFFER_REQ_LEN(EP_BUFFER_SIZE, EP_BUFFER_SIZE)
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#define FJES_DEV_RES_BUF_SIZE(maxep) \
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FJES_DEV_COMMAND_INFO_RES_LEN(maxep)
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#define FJES_DEV_COMMAND_START_DBG_REQ_LEN(byte) \
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(16 + (8 * (byte) / FJES_DEBUG_PAGE_SIZE))
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#define FJES_DEV_COMMAND_START_DBG_RES_LEN (8)
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#define FJES_DEV_COMMAND_STOP_DBG_REQ_LEN (4)
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#define FJES_DEV_COMMAND_STOP_DBG_RES_LEN (8)
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/* Frame & MTU */
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struct esmem_frame {
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__le32 frame_size;
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u8 frame_data[];
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};
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/* EP partner status */
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enum ep_partner_status {
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EP_PARTNER_UNSHARE,
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EP_PARTNER_SHARED,
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EP_PARTNER_WAITING,
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EP_PARTNER_COMPLETE,
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EP_PARTNER_STATUS_MAX,
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};
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/* shared status region */
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struct fjes_device_shared_info {
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int epnum;
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u8 ep_status[];
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};
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/* structures for command control request data*/
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union fjes_device_command_req {
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struct {
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__le32 length;
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} info;
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struct {
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__le32 length;
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__le32 epid;
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__le64 buffer[];
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} share_buffer;
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struct {
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__le32 length;
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__le32 epid;
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} unshare_buffer;
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struct {
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__le32 length;
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__le32 mode;
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__le64 buffer_len;
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__le64 buffer[];
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} start_trace;
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struct {
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__le32 length;
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} stop_trace;
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};
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/* structures for command control response data */
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union fjes_device_command_res {
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struct {
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__le32 length;
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__le32 code;
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struct {
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u8 es_status;
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u8 zone;
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} info[];
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} info;
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struct {
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__le32 length;
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__le32 code;
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} share_buffer;
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struct {
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__le32 length;
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__le32 code;
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} unshare_buffer;
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struct {
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__le32 length;
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__le32 code;
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} start_trace;
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struct {
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__le32 length;
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__le32 code;
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} stop_trace;
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};
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/* request command type */
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enum fjes_dev_command_request_type {
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FJES_CMD_REQ_INFO = 0x0001,
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FJES_CMD_REQ_SHARE_BUFFER = 0x0002,
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FJES_CMD_REQ_UNSHARE_BUFFER = 0x0004,
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FJES_CMD_REQ_START_DEBUG = 0x0100,
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FJES_CMD_REQ_STOP_DEBUG = 0x0200,
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};
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/* parameter for command control */
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struct fjes_device_command_param {
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u32 req_len;
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phys_addr_t req_start;
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u32 res_len;
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phys_addr_t res_start;
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phys_addr_t share_start;
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};
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/* error code for command control */
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enum fjes_dev_command_response_e {
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FJES_CMD_STATUS_UNKNOWN,
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FJES_CMD_STATUS_NORMAL,
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FJES_CMD_STATUS_TIMEOUT,
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FJES_CMD_STATUS_ERROR_PARAM,
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FJES_CMD_STATUS_ERROR_STATUS,
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};
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/* EP buffer information */
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union ep_buffer_info {
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u8 raw[EP_BUFFER_INFO_SIZE];
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struct _ep_buffer_info_common_t {
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u32 version;
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} common;
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struct _ep_buffer_info_v1_t {
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u32 version;
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u32 info_size;
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u32 buffer_size;
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u16 count_max;
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u16 _rsv_1;
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u32 frame_max;
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u8 mac_addr[ETH_ALEN];
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u16 _rsv_2;
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u32 _rsv_3;
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u16 tx_status;
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u16 rx_status;
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u32 head;
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u32 tail;
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u16 vlan_id[EP_BUFFER_SUPPORT_VLAN_MAX];
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} v1i;
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};
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/* statistics of EP */
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struct fjes_drv_ep_stats {
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u64 com_regist_buf_exec;
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u64 com_unregist_buf_exec;
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u64 send_intr_rx;
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u64 send_intr_unshare;
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u64 send_intr_zoneupdate;
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u64 recv_intr_rx;
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u64 recv_intr_unshare;
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u64 recv_intr_stop;
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u64 recv_intr_zoneupdate;
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u64 tx_buffer_full;
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u64 tx_dropped_not_shared;
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u64 tx_dropped_ver_mismatch;
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u64 tx_dropped_buf_size_mismatch;
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u64 tx_dropped_vlanid_mismatch;
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};
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/* buffer pair for Extended Partition */
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struct ep_share_mem_info {
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struct epbuf_handler {
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void *buffer;
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size_t size;
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union ep_buffer_info *info;
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u8 *ring;
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} tx, rx;
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struct rtnl_link_stats64 net_stats;
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struct fjes_drv_ep_stats ep_stats;
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u16 tx_status_work;
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u8 es_status;
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u8 zone;
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};
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struct es_device_trace {
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u32 record_num;
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u32 current_record;
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u32 status_flag;
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u32 _rsv;
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struct {
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u16 epid;
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u16 dir_offset;
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u32 data;
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u64 tsc;
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} record[];
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};
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struct fjes_hw_info {
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struct fjes_device_shared_info *share;
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union fjes_device_command_req *req_buf;
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u64 req_buf_size;
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union fjes_device_command_res *res_buf;
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u64 res_buf_size;
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int *my_epid;
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int *max_epid;
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struct es_device_trace *trace;
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u64 trace_size;
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struct mutex lock; /* buffer lock*/
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unsigned long buffer_share_bit;
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unsigned long buffer_unshare_reserve_bit;
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};
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struct fjes_hw {
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void *back;
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unsigned long txrx_stop_req_bit;
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unsigned long epstop_req_bit;
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struct work_struct update_zone_task;
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struct work_struct epstop_task;
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int my_epid;
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int max_epid;
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struct ep_share_mem_info *ep_shm_info;
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struct fjes_hw_resource {
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u64 start;
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u64 size;
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int irq;
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} hw_res;
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u8 *base;
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struct fjes_hw_info hw_info;
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spinlock_t rx_status_lock; /* spinlock for rx_status */
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u32 debug_mode;
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};
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int fjes_hw_init(struct fjes_hw *);
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void fjes_hw_exit(struct fjes_hw *);
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int fjes_hw_reset(struct fjes_hw *);
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int fjes_hw_request_info(struct fjes_hw *);
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int fjes_hw_register_buff_addr(struct fjes_hw *, int,
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struct ep_share_mem_info *);
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int fjes_hw_unregister_buff_addr(struct fjes_hw *, int);
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void fjes_hw_init_command_registers(struct fjes_hw *,
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struct fjes_device_command_param *);
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void fjes_hw_setup_epbuf(struct epbuf_handler *, u8 *, u32);
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int fjes_hw_raise_interrupt(struct fjes_hw *, int, enum REG_ICTL_MASK);
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void fjes_hw_set_irqmask(struct fjes_hw *, enum REG_ICTL_MASK, bool);
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u32 fjes_hw_capture_interrupt_status(struct fjes_hw *);
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void fjes_hw_raise_epstop(struct fjes_hw *);
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int fjes_hw_wait_epstop(struct fjes_hw *);
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enum ep_partner_status
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fjes_hw_get_partner_ep_status(struct fjes_hw *, int);
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bool fjes_hw_epid_is_same_zone(struct fjes_hw *, int);
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int fjes_hw_epid_is_shared(struct fjes_device_shared_info *, int);
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bool fjes_hw_check_epbuf_version(struct epbuf_handler *, u32);
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bool fjes_hw_check_mtu(struct epbuf_handler *, u32);
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bool fjes_hw_check_vlan_id(struct epbuf_handler *, u16);
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bool fjes_hw_set_vlan_id(struct epbuf_handler *, u16);
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void fjes_hw_del_vlan_id(struct epbuf_handler *, u16);
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bool fjes_hw_epbuf_rx_is_empty(struct epbuf_handler *);
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void *fjes_hw_epbuf_rx_curpkt_get_addr(struct epbuf_handler *, size_t *);
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void fjes_hw_epbuf_rx_curpkt_drop(struct epbuf_handler *);
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int fjes_hw_epbuf_tx_pkt_send(struct epbuf_handler *, void *, size_t);
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int fjes_hw_start_debug(struct fjes_hw *);
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int fjes_hw_stop_debug(struct fjes_hw *);
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#endif /* FJES_HW_H_ */
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