mirror of
git://nv-tegra.nvidia.com/kernel/nvethernetrm.git
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1a2c9a3d94
- OSI DMA
-- During Trasnmit:
--- For EQOS/MGBE one steps PTP Reads TS and update
in TX done structure.
--- For MGBE 2 steps PTP or 1 step slave, update flags
TS_POLL and update pkt_id as unique ID to be used
for polling by OSD after Common interrupt handling.
packet_id = MSB 4 bits channel_number and LSB 6-bits,
local index of PTP TS FIFO.
-- On transmit complete
--- If TS is part of Tx done context set OSI_TXDONE_CX_TS
--- If TS is not part of Tx done context and delayed set
OSI_TXDONE_CX_TS_DELAY.
- OSI Core
-- On Common interrupt:
--- If MGBE_ISR_TSIS is set, read time stamp to internal
array from HW fifo, until it is completely read or array
is full.
--- Provide an IOCTL OSI_CMD_GET_TX_TS, to read TS for the
specified pkt_id from OSD via structure osi_core_tx_ts
--- Provide an IOCTL OSI_CMD_FREE_TS, to free TS for the
specified pkt_id from OSD path
Bug 200603265
Signed-off-by: Nagarjuna Kristam <nkristam@nvidia.com>
Signed-off-by: Rakesh Goyal <rgoyal@nvidia.com>
Change-Id: Ib3e02031393e40988074095e5a135bb4e839d7f4
Reviewed-on: https://git-master.nvidia.com/r/c/kernel/nvethernetrm/+/2543792
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: Krishna Thota <kthota@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: Bhadram Varka <vbhadram@nvidia.com>
GVS: Gerrit_Virtual_Submit
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
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* Copyright (c) 2020-2021, NVIDIA CORPORATION. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef LOCAL_COMMON_H
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#define LOCAL_COMMON_H
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#include <osi_common.h>
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/**
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* @brief TX timestamp helper MACROS
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* @{
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*/
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#define CHAN_START_POSITION 6U
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#define PKT_ID_CNT ((nveu32_t)1 << CHAN_START_POSITION)
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/* First 6 bytes of idx and last 4 bytes of chan(+1 to avoid pkt_id to be 0) */
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#define GET_TX_TS_PKTID(idx, c) (((++(idx)) & (PKT_ID_CNT - 1U)) | \
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(((c) + 1U) << CHAN_START_POSITION))
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/** @} */
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/**
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*@brief div_u64_rem - updates remainder and returns Quotient
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*
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* @note
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* Algorithm:
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* - Dividend will be divided by divisor and stores the
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* remainder value and returns quotient
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*
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* @param[in] dividend: Dividend value
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* @param[in] divisor: Divisor value
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* @param[out] remain: Remainder
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*
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* @pre MAC IP should be out of reset and need to be initialized as the
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* requirements
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*
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* @note
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* API Group:
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* - Initialization: No
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* - Run time: Yes
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* - De-initialization: No
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*
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* @retval Quotient
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*/
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nveu64_t div_u64_rem(nveu64_t dividend, nveu64_t divisor,
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nveu64_t *remain);
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/**
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* @brief common_get_systime_from_mac - Get system time
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*
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* @param[in] addr: Address of base register.
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* @param[in] mac: MAC HW type.
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* @param[out] sec: Value read in Seconds.
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* @param[out] nsec: Value read in Nano seconds.
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*
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* @pre MAC should be init and started. see osi_start_mac()
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*
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* @note
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* API Group:
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* - Initialization: No
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* - Run time: Yes
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* - De-initialization: No
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*
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* @retval 0 on success
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* @retval -1 on failure.
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*/
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void common_get_systime_from_mac(void *addr, nveu32_t mac,
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nveu32_t *sec, nveu32_t *nsec);
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/**
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* @brief common_is_mac_enabled - Checks if MAC is enabled or not.
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*
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* @param[in] addr: Address of base register.
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* @param[in] mac: MAC HW type.
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*
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* @pre MAC should be init and started. see osi_start_mac()
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*
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* @note
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* API Group:
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* - Initialization: Yes
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* - Run time: No
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* - De-initialization: No
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*
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* @retval OSI_ENABLE if MAC enabled.
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* @retval OSI_DISABLE otherwise.
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*/
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nveu32_t common_is_mac_enabled(void *addr, nveu32_t mac);
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#endif /* LOCAL_COMMON_H */
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