/*- * 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 Buffer Pool (DPBP) driver. * * The DPBP configures a buffer pool that can be associated with DPAA2 network * and accelerator interfaces. */ #include #include #include #include #include #include #include #include #include #include #include #include "pcib_if.h" #include "pci_if.h" #include "dpaa2_mc.h" #include "dpaa2_mcp.h" #include "dpaa2_swp.h" #include "dpaa2_swp_if.h" #include "dpaa2_cmd_if.h" /* DPAA2 Buffer Pool resource specification. */ struct resource_spec dpaa2_bp_spec[] = { /* * DPMCP resources. * * NOTE: MC command portals (MCPs) are used to send commands to, and * receive responses from, the MC firmware. One portal per DPBP. */ #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_bp_probe(device_t dev) { /* DPBP device will be added by the parent resource container. */ device_set_desc(dev, "DPAA2 Buffer Pool"); return (BUS_PROBE_DEFAULT); } static int dpaa2_bp_detach(device_t dev) { device_t pdev = device_get_parent(dev); device_t child = dev; struct dpaa2_bp_softc *sc = device_get_softc(dev); struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev); struct dpaa2_devinfo *dinfo = device_get_ivars(dev); struct dpaa2_cmd cmd; uint16_t rc_token, bp_token; int error; DPAA2_CMD_INIT(&cmd); error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token); if (error) { device_printf(dev, "%s: failed to open DPRC: error=%d\n", __func__, error); goto err_exit; } error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token); if (error) { device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n", __func__, dinfo->id, error); goto close_rc; } (void)DPAA2_CMD_BP_DISABLE(dev, child, &cmd); (void)DPAA2_CMD_BP_CLOSE(dev, child, &cmd); (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); dinfo->portal = NULL; bus_release_resources(sc->dev, dpaa2_bp_spec, sc->res); return (0); close_rc: (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); err_exit: return (ENXIO); } static int dpaa2_bp_attach(device_t dev) { device_t pdev = device_get_parent(dev); device_t child = dev; device_t mcp_dev; struct dpaa2_bp_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; struct dpaa2_cmd cmd; uint16_t rc_token, bp_token; int error; sc->dev = dev; error = bus_alloc_resources(sc->dev, dpaa2_bp_spec, sc->res); if (error) { device_printf(dev, "%s: failed to allocate resources: " "error=%d\n", __func__, error); goto err_exit; } /* Send commands to MC via allocated 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; DPAA2_CMD_INIT(&cmd); error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token); if (error) { device_printf(dev, "%s: failed to open DPRC: error=%d\n", __func__, error); goto detach; } error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token); if (error) { device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n", __func__, dinfo->id, error); goto close_rc; } error = DPAA2_CMD_BP_RESET(dev, child, &cmd); if (error) { device_printf(dev, "%s: failed to reset DPBP: id=%d, error=%d\n", __func__, dinfo->id, error); goto close_bp; } error = DPAA2_CMD_BP_ENABLE(dev, child, &cmd); if (error) { device_printf(dev, "%s: failed to enable DPBP: id=%d, " "error=%d\n", __func__, dinfo->id, error); goto close_bp; } error = DPAA2_CMD_BP_GET_ATTRIBUTES(dev, child, &cmd, &sc->attr); if (error) { device_printf(dev, "%s: failed to get DPBP attributes: id=%d, " "error=%d\n", __func__, dinfo->id, error); goto close_bp; } (void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token)); (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); return (0); close_bp: (void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token)); close_rc: (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); detach: dpaa2_bp_detach(dev); err_exit: return (ENXIO); } static device_method_t dpaa2_bp_methods[] = { /* Device interface */ DEVMETHOD(device_probe, dpaa2_bp_probe), DEVMETHOD(device_attach, dpaa2_bp_attach), DEVMETHOD(device_detach, dpaa2_bp_detach), DEVMETHOD_END }; static driver_t dpaa2_bp_driver = { "dpaa2_bp", dpaa2_bp_methods, sizeof(struct dpaa2_bp_softc), }; DRIVER_MODULE(dpaa2_bp, dpaa2_rc, dpaa2_bp_driver, 0, 0);