357 lines
9.4 KiB
C
357 lines
9.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) 2017 CESNET
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of CESNET nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SZEDATA2_IOBUF_H_
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#define _SZEDATA2_IOBUF_H_
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#include <stdint.h>
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#include <stdbool.h>
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#include <rte_byteorder.h>
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#include <rte_io.h>
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#include <rte_dev.h>
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/* IBUF offsets from the beginning of the PCI resource address space. */
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extern const uint32_t szedata2_ibuf_base_table[];
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extern const uint32_t szedata2_ibuf_count;
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/* OBUF offsets from the beginning of the PCI resource address space. */
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extern const uint32_t szedata2_obuf_base_table[];
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extern const uint32_t szedata2_obuf_count;
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enum szedata2_link_speed {
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SZEDATA2_LINK_SPEED_DEFAULT = 0,
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SZEDATA2_LINK_SPEED_10G,
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SZEDATA2_LINK_SPEED_40G,
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SZEDATA2_LINK_SPEED_100G,
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};
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enum szedata2_mac_check_mode {
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SZEDATA2_MAC_CHMODE_PROMISC = 0x0,
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SZEDATA2_MAC_CHMODE_ONLY_VALID = 0x1,
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SZEDATA2_MAC_CHMODE_ALL_BROADCAST = 0x2,
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SZEDATA2_MAC_CHMODE_ALL_MULTICAST = 0x3,
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};
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/**
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* Macro takes pointer to pci resource structure (rsc)
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* and returns pointer to mapped resource memory at
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* specified offset (offset) typecast to the type (type).
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*/
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#define SZEDATA2_PCI_RESOURCE_PTR(rsc, offset, type) \
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((type)(((uint8_t *)(rsc)->addr) + (offset)))
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/**
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* Maximum possible number of MAC addresses (limited by IBUF status
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* register value MAC_COUNT which has 5 bits).
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*/
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#define SZEDATA2_IBUF_MAX_MAC_COUNT 32
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/**
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* Structure describes IBUF address space.
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*/
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struct szedata2_ibuf {
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/** Total Received Frames Counter low part */
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uint32_t trfcl; /**< 0x00 */
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/** Correct Frames Counter low part */
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uint32_t cfcl; /**< 0x04 */
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/** Discarded Frames Counter low part */
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uint32_t dfcl; /**< 0x08 */
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/** Counter of frames discarded due to buffer overflow low part */
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uint32_t bodfcl; /**< 0x0C */
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/** Total Received Frames Counter high part */
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uint32_t trfch; /**< 0x10 */
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/** Correct Frames Counter high part */
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uint32_t cfch; /**< 0x14 */
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/** Discarded Frames Counter high part */
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uint32_t dfch; /**< 0x18 */
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/** Counter of frames discarded due to buffer overflow high part */
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uint32_t bodfch; /**< 0x1C */
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/** IBUF enable register */
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uint32_t ibuf_en; /**< 0x20 */
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/** Error mask register */
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uint32_t err_mask; /**< 0x24 */
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/** IBUF status register */
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uint32_t ibuf_st; /**< 0x28 */
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/** IBUF command register */
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uint32_t ibuf_cmd; /**< 0x2C */
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/** Minimum frame length allowed */
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uint32_t mfla; /**< 0x30 */
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/** Frame MTU */
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uint32_t mtu; /**< 0x34 */
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/** MAC address check mode */
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uint32_t mac_chmode; /**< 0x38 */
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/** Octets Received OK Counter low part */
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uint32_t orocl; /**< 0x3C */
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/** Octets Received OK Counter high part */
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uint32_t oroch; /**< 0x40 */
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/** reserved */
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uint8_t reserved[60]; /**< 0x4C */
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/** IBUF memory for MAC addresses */
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uint32_t mac_mem[2 * SZEDATA2_IBUF_MAX_MAC_COUNT]; /**< 0x80 */
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} __rte_packed;
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/**
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* Structure describes OBUF address space.
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*/
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struct szedata2_obuf {
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/** Total Sent Frames Counter low part */
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uint32_t tsfcl; /**< 0x00 */
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/** Octets Sent Counter low part */
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uint32_t oscl; /**< 0x04 */
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/** Total Discarded Frames Counter low part */
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uint32_t tdfcl; /**< 0x08 */
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/** reserved */
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uint32_t reserved1; /**< 0x0C */
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/** Total Sent Frames Counter high part */
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uint32_t tsfch; /**< 0x10 */
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/** Octets Sent Counter high part */
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uint32_t osch; /**< 0x14 */
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/** Total Discarded Frames Counter high part */
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uint32_t tdfch; /**< 0x18 */
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/** reserved */
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uint32_t reserved2; /**< 0x1C */
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/** OBUF enable register */
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uint32_t obuf_en; /**< 0x20 */
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/** reserved */
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uint64_t reserved3; /**< 0x24 */
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/** OBUF control register */
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uint32_t ctrl; /**< 0x2C */
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/** OBUF status register */
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uint32_t obuf_st; /**< 0x30 */
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} __rte_packed;
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/**
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* Wrapper for reading 4 bytes from device memory in correct endianness.
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*
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* @param addr
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* Address for reading.
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* @return
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* 4 B value.
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*/
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static inline uint32_t
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szedata2_read32(const volatile void *addr)
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{
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return rte_le_to_cpu_32(rte_read32(addr));
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}
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/**
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* Wrapper for writing 4 bytes to device memory in correct endianness.
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*
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* @param value
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* Value to write.
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* @param addr
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* Address for writing.
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*/
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static inline void
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szedata2_write32(uint32_t value, volatile void *addr)
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{
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rte_write32(rte_cpu_to_le_32(value), addr);
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}
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/**
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* Get pointer to IBUF structure according to specified index.
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*
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* @param rsc
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* Pointer to base address of memory resource.
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* @param index
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* Index of IBUF.
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* @return
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* Pointer to IBUF structure.
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*/
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static inline struct szedata2_ibuf *
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ibuf_ptr_by_index(struct rte_mem_resource *rsc, uint32_t index)
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{
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if (index >= szedata2_ibuf_count)
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index = szedata2_ibuf_count - 1;
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return SZEDATA2_PCI_RESOURCE_PTR(rsc, szedata2_ibuf_base_table[index],
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struct szedata2_ibuf *);
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}
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/**
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* Get pointer to OBUF structure according to specified idnex.
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*
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* @param rsc
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* Pointer to base address of memory resource.
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* @param index
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* Index of OBUF.
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* @return
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* Pointer to OBUF structure.
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*/
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static inline struct szedata2_obuf *
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obuf_ptr_by_index(struct rte_mem_resource *rsc, uint32_t index)
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{
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if (index >= szedata2_obuf_count)
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index = szedata2_obuf_count - 1;
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return SZEDATA2_PCI_RESOURCE_PTR(rsc, szedata2_obuf_base_table[index],
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struct szedata2_obuf *);
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}
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/**
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* Checks if IBUF is enabled.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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* @return
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* true if IBUF is enabled.
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* false if IBUF is disabled.
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*/
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static inline bool
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ibuf_is_enabled(const volatile struct szedata2_ibuf *ibuf)
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{
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return ((szedata2_read32(&ibuf->ibuf_en) & 0x1) != 0) ? true : false;
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}
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/**
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* Enables IBUF.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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*/
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static inline void
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ibuf_enable(volatile struct szedata2_ibuf *ibuf)
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{
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szedata2_write32(szedata2_read32(&ibuf->ibuf_en) | 0x1, &ibuf->ibuf_en);
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}
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/**
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* Disables IBUF.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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*/
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static inline void
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ibuf_disable(volatile struct szedata2_ibuf *ibuf)
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{
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szedata2_write32(szedata2_read32(&ibuf->ibuf_en) & ~0x1,
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&ibuf->ibuf_en);
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}
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/**
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* Checks if link is up.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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* @return
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* true if ibuf link is up.
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* false if ibuf link is down.
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*/
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static inline bool
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ibuf_is_link_up(const volatile struct szedata2_ibuf *ibuf)
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{
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return ((szedata2_read32(&ibuf->ibuf_st) & 0x80) != 0) ? true : false;
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}
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/**
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* Get current MAC address check mode from IBUF.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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* @return
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* MAC address check mode constant.
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*/
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static inline enum szedata2_mac_check_mode
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ibuf_mac_mode_read(const volatile struct szedata2_ibuf *ibuf)
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{
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switch (szedata2_read32(&ibuf->mac_chmode) & 0x3) {
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case 0x0:
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return SZEDATA2_MAC_CHMODE_PROMISC;
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case 0x1:
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return SZEDATA2_MAC_CHMODE_ONLY_VALID;
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case 0x2:
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return SZEDATA2_MAC_CHMODE_ALL_BROADCAST;
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case 0x3:
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return SZEDATA2_MAC_CHMODE_ALL_MULTICAST;
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default:
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return SZEDATA2_MAC_CHMODE_PROMISC;
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}
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}
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/**
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* Writes mode in MAC address check mode register in IBUF.
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*
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* @param ibuf
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* Pointer to IBUF structure.
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* @param mode
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* MAC address check mode to set.
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*/
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static inline void
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ibuf_mac_mode_write(volatile struct szedata2_ibuf *ibuf,
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enum szedata2_mac_check_mode mode)
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{
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szedata2_write32((szedata2_read32(&ibuf->mac_chmode) & ~0x3) | mode,
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&ibuf->mac_chmode);
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}
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/**
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* Checks if obuf is enabled.
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*
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* @param obuf
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* Pointer to OBUF structure.
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* @return
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* true if OBUF is enabled.
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* false if OBUF is disabled.
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*/
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static inline bool
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obuf_is_enabled(const volatile struct szedata2_obuf *obuf)
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{
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return ((szedata2_read32(&obuf->obuf_en) & 0x1) != 0) ? true : false;
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}
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/**
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* Enables OBUF.
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*
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* @param obuf
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* Pointer to OBUF structure.
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*/
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static inline void
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obuf_enable(volatile struct szedata2_obuf *obuf)
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{
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szedata2_write32(szedata2_read32(&obuf->obuf_en) | 0x1, &obuf->obuf_en);
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}
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/**
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* Disables OBUF.
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*
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* @param obuf
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* Pointer to OBUF structure.
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*/
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static inline void
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obuf_disable(volatile struct szedata2_obuf *obuf)
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{
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szedata2_write32(szedata2_read32(&obuf->obuf_en) & ~0x1,
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&obuf->obuf_en);
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}
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#endif /* _SZEDATA2_IOBUF_H_ */
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