diff options
Diffstat (limited to 'drivers/net/sfc/sfc_dp.h')
| -rw-r--r-- | drivers/net/sfc/sfc_dp.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/drivers/net/sfc/sfc_dp.h b/drivers/net/sfc/sfc_dp.h new file mode 100644 index 00000000..eff0aa87 --- /dev/null +++ b/drivers/net/sfc/sfc_dp.h @@ -0,0 +1,125 @@ +/*- + * BSD LICENSE + * + * Copyright (c) 2017 Solarflare Communications Inc. + * All rights reserved. + * + * This software was jointly developed between OKTET Labs (under contract + * for Solarflare) and Solarflare Communications, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, + * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _SFC_DP_H +#define _SFC_DP_H + +#include <stdbool.h> +#include <sys/queue.h> + +#include <rte_pci.h> + +#ifdef __cplusplus +extern "C" { +#endif + +#define SFC_DIV_ROUND_UP(a, b) \ + __extension__ ({ \ + typeof(a) _a = (a); \ + typeof(b) _b = (b); \ + \ + (_a + (_b - 1)) / _b; \ + }) + +/** + * Datapath exception handler to be provided by the control path. + */ +typedef void (sfc_dp_exception_t)(void *ctrl); + +enum sfc_dp_type { + SFC_DP_RX = 0, /**< Receive datapath */ + SFC_DP_TX, /**< Transmit datapath */ +}; + + +/** Datapath queue run-time information */ +struct sfc_dp_queue { + uint16_t port_id; + uint16_t queue_id; + struct rte_pci_addr pci_addr; +}; + +void sfc_dp_queue_init(struct sfc_dp_queue *dpq, + uint16_t port_id, uint16_t queue_id, + const struct rte_pci_addr *pci_addr); + +/* + * Helper macro to define datapath logging macros and have uniform + * logging. + */ +#define SFC_DP_LOG(dp_name, level, dpq, ...) \ + do { \ + const struct sfc_dp_queue *_dpq = (dpq); \ + const struct rte_pci_addr *_addr = &(_dpq)->pci_addr; \ + \ + RTE_LOG(level, PMD, \ + RTE_FMT("%s " PCI_PRI_FMT \ + " #%" PRIu16 ".%" PRIu16 ": " \ + RTE_FMT_HEAD(__VA_ARGS__,) "\n", \ + dp_name, \ + _addr->domain, _addr->bus, \ + _addr->devid, _addr->function, \ + _dpq->port_id, _dpq->queue_id, \ + RTE_FMT_TAIL(__VA_ARGS__,))); \ + } while (0) + + +/** Datapath definition */ +struct sfc_dp { + TAILQ_ENTRY(sfc_dp) links; + const char *name; + enum sfc_dp_type type; + /* Mask of required hardware/firmware capabilities */ + unsigned int hw_fw_caps; +#define SFC_DP_HW_FW_CAP_EF10 0x1 +}; + +/** List of datapath variants */ +TAILQ_HEAD(sfc_dp_list, sfc_dp); + +/* Check if available HW/FW capabilities are sufficient for the datapath */ +static inline bool +sfc_dp_match_hw_fw_caps(const struct sfc_dp *dp, unsigned int avail_caps) +{ + return (dp->hw_fw_caps & avail_caps) == dp->hw_fw_caps; +} + +struct sfc_dp *sfc_dp_find_by_name(struct sfc_dp_list *head, + enum sfc_dp_type type, const char *name); +struct sfc_dp *sfc_dp_find_by_caps(struct sfc_dp_list *head, + enum sfc_dp_type type, + unsigned int avail_caps); +int sfc_dp_register(struct sfc_dp_list *head, struct sfc_dp *entry); + +#ifdef __cplusplus +} +#endif +#endif /* _SFC_DP_H */ |