/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright © 2021-2022 Dmitry Salychev * * 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 AUTHOR 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 AUTHOR 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. */ #include /* * The DPAA2 Concentrator (DPCON) driver. * * Supports configuration of QBMan channels for advanced scheduling of ingress * packets from one or more network interfaces. * * DPCONs are used to distribute Rx or Tx Confirmation traffic to different * cores, via affine DPIO objects. The implication is that one DPCON must be * available for each core where Rx or Tx Confirmation traffic should be * distributed to. * * QBMan channel contains several work queues. The WQs within a channel have a * priority relative to each other. Each channel consists of either eight or two * WQs, and thus, there are either eight or two possible priorities in a channel. */ #include #include #include #include #include #include #include #include #include #include #include #include "pcib_if.h" #include "pci_if.h" #include "dpaa2_mcp.h" #include "dpaa2_swp.h" #include "dpaa2_mc.h" #include "dpaa2_cmd_if.h" /* DPAA2 Concentrator resource specification. */ struct resource_spec dpaa2_con_spec[] = { /* * DPMCP resources. * * NOTE: MC command portals (MCPs) are used to send commands to, and * receive responses from, the MC firmware. One portal per DPCON. */ #define MCP_RES_NUM (1u) #define MCP_RID_OFF (0u) #define MCP_RID(rid) ((rid) + MCP_RID_OFF) /* --- */ { DPAA2_DEV_MCP, MCP_RID(0), RF_ACTIVE | RF_SHAREABLE | RF_OPTIONAL }, /* --- */ RESOURCE_SPEC_END }; static int dpaa2_con_detach(device_t dev); /* * Device interface. */ static int dpaa2_con_probe(device_t dev) { /* DPCON device will be added by a parent resource container itself. */ device_set_desc(dev, "DPAA2 Concentrator"); return (BUS_PROBE_DEFAULT); } static int dpaa2_con_detach(device_t dev) { device_t child = dev; struct dpaa2_con_softc *sc = device_get_softc(dev); DPAA2_CMD_CON_CLOSE(dev, child, dpaa2_mcp_tk(sc->cmd, sc->con_token)); DPAA2_CMD_RC_CLOSE(dev, child, dpaa2_mcp_tk(sc->cmd, sc->rc_token)); dpaa2_mcp_free_command(sc->cmd); sc->cmd = NULL; sc->con_token = 0; sc->rc_token = 0; return (0); } static int dpaa2_con_attach(device_t dev) { device_t pdev = device_get_parent(dev); device_t child = dev; device_t mcp_dev; struct dpaa2_con_softc *sc = device_get_softc(dev); struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev); struct dpaa2_devinfo *dinfo = device_get_ivars(dev); struct dpaa2_devinfo *mcp_dinfo; int error; sc->dev = dev; error = bus_alloc_resources(sc->dev, dpaa2_con_spec, sc->res); if (error) { device_printf(dev, "%s: failed to allocate resources: " "error=%d\n", __func__, error); return (ENXIO); } /* Obtain MC portal. */ mcp_dev = (device_t) rman_get_start(sc->res[MCP_RID(0)]); mcp_dinfo = device_get_ivars(mcp_dev); dinfo->portal = mcp_dinfo->portal; /* Allocate a command to send to MC hardware. */ error = dpaa2_mcp_init_command(&sc->cmd, DPAA2_CMD_DEF); if (error) { device_printf(dev, "Failed to allocate dpaa2_cmd: error=%d\n", error); goto err_exit; } /* Open resource container and DPCON object. */ error = DPAA2_CMD_RC_OPEN(dev, child, sc->cmd, rcinfo->id, &sc->rc_token); if (error) { device_printf(dev, "Failed to open DPRC: error=%d\n", error); goto err_free_cmd; } error = DPAA2_CMD_CON_OPEN(dev, child, sc->cmd, dinfo->id, &sc->con_token); if (error) { device_printf(dev, "Failed to open DPCON: id=%d, error=%d\n", dinfo->id, error); goto err_close_rc; } /* Prepare DPCON object. */ error = DPAA2_CMD_CON_RESET(dev, child, sc->cmd); if (error) { device_printf(dev, "Failed to reset DPCON: id=%d, error=%d\n", dinfo->id, error); goto err_close_con; } error = DPAA2_CMD_CON_GET_ATTRIBUTES(dev, child, sc->cmd, &sc->attr); if (error) { device_printf(dev, "Failed to get DPCON attributes: id=%d, " "error=%d\n", dinfo->id, error); goto err_close_con; } /* TODO: Enable debug output via sysctl (to reduce output). */ if (bootverbose) device_printf(dev, "chan_id=%d, priorities=%d\n", sc->attr.chan_id, sc->attr.prior_num); return (0); err_close_con: DPAA2_CMD_CON_CLOSE(dev, child, dpaa2_mcp_tk(sc->cmd, sc->con_token)); err_close_rc: DPAA2_CMD_RC_CLOSE(dev, child, dpaa2_mcp_tk(sc->cmd, sc->rc_token)); err_free_cmd: dpaa2_mcp_free_command(sc->cmd); err_exit: return (ENXIO); } static device_method_t dpaa2_con_methods[] = { /* Device interface */ DEVMETHOD(device_probe, dpaa2_con_probe), DEVMETHOD(device_attach, dpaa2_con_attach), DEVMETHOD(device_detach, dpaa2_con_detach), DEVMETHOD_END }; static driver_t dpaa2_con_driver = { "dpaa2_con", dpaa2_con_methods, sizeof(struct dpaa2_con_softc), }; DRIVER_MODULE(dpaa2_con, dpaa2_rc, dpaa2_con_driver, 0, 0);