218 lines
6.2 KiB
C
218 lines
6.2 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright © 2021-2022 Dmitry Salychev
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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/*
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* The DPAA2 Buffer Pool (DPBP) driver.
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*
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* The DPBP configures a buffer pool that can be associated with DPAA2 network
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* and accelerator interfaces.
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <sys/module.h>
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#include <sys/malloc.h>
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#include <sys/mutex.h>
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#include <vm/vm.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <dev/pci/pcivar.h>
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#include "pcib_if.h"
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#include "pci_if.h"
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#include "dpaa2_mc.h"
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#include "dpaa2_mcp.h"
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#include "dpaa2_swp.h"
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#include "dpaa2_swp_if.h"
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#include "dpaa2_cmd_if.h"
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/* DPAA2 Buffer Pool resource specification. */
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struct resource_spec dpaa2_bp_spec[] = {
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/*
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* DPMCP resources.
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*
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* NOTE: MC command portals (MCPs) are used to send commands to, and
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* receive responses from, the MC firmware. One portal per DPBP.
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*/
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#define MCP_RES_NUM (1u)
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#define MCP_RID_OFF (0u)
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#define MCP_RID(rid) ((rid) + MCP_RID_OFF)
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/* --- */
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{ DPAA2_DEV_MCP, MCP_RID(0), RF_ACTIVE | RF_SHAREABLE | RF_OPTIONAL },
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/* --- */
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RESOURCE_SPEC_END
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};
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static int
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dpaa2_bp_probe(device_t dev)
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{
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/* DPBP device will be added by the parent resource container. */
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device_set_desc(dev, "DPAA2 Buffer Pool");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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dpaa2_bp_detach(device_t dev)
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{
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device_t pdev = device_get_parent(dev);
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device_t child = dev;
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struct dpaa2_bp_softc *sc = device_get_softc(dev);
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struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev);
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struct dpaa2_devinfo *dinfo = device_get_ivars(dev);
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struct dpaa2_cmd cmd;
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uint16_t rc_token, bp_token;
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int error;
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DPAA2_CMD_INIT(&cmd);
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error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token);
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if (error) {
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device_printf(dev, "%s: failed to open DPRC: error=%d\n",
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__func__, error);
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goto err_exit;
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}
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error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token);
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if (error) {
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device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n",
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__func__, dinfo->id, error);
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goto close_rc;
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}
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(void)DPAA2_CMD_BP_DISABLE(dev, child, &cmd);
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(void)DPAA2_CMD_BP_CLOSE(dev, child, &cmd);
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(void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token));
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dinfo->portal = NULL;
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bus_release_resources(sc->dev, dpaa2_bp_spec, sc->res);
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return (0);
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close_rc:
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(void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token));
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err_exit:
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return (ENXIO);
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}
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static int
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dpaa2_bp_attach(device_t dev)
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{
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device_t pdev = device_get_parent(dev);
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device_t child = dev;
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device_t mcp_dev;
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struct dpaa2_bp_softc *sc = device_get_softc(dev);
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struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev);
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struct dpaa2_devinfo *dinfo = device_get_ivars(dev);
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struct dpaa2_devinfo *mcp_dinfo;
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struct dpaa2_cmd cmd;
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uint16_t rc_token, bp_token;
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int error;
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sc->dev = dev;
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error = bus_alloc_resources(sc->dev, dpaa2_bp_spec, sc->res);
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if (error) {
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device_printf(dev, "%s: failed to allocate resources: "
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"error=%d\n", __func__, error);
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goto err_exit;
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}
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/* Send commands to MC via allocated portal. */
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mcp_dev = (device_t) rman_get_start(sc->res[MCP_RID(0)]);
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mcp_dinfo = device_get_ivars(mcp_dev);
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dinfo->portal = mcp_dinfo->portal;
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DPAA2_CMD_INIT(&cmd);
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error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token);
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if (error) {
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device_printf(dev, "%s: failed to open DPRC: error=%d\n",
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__func__, error);
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goto detach;
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}
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error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token);
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if (error) {
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device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n",
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__func__, dinfo->id, error);
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goto close_rc;
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}
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error = DPAA2_CMD_BP_RESET(dev, child, &cmd);
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if (error) {
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device_printf(dev, "%s: failed to reset DPBP: id=%d, error=%d\n",
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__func__, dinfo->id, error);
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goto close_bp;
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}
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error = DPAA2_CMD_BP_ENABLE(dev, child, &cmd);
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if (error) {
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device_printf(dev, "%s: failed to enable DPBP: id=%d, "
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"error=%d\n", __func__, dinfo->id, error);
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goto close_bp;
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}
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error = DPAA2_CMD_BP_GET_ATTRIBUTES(dev, child, &cmd, &sc->attr);
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if (error) {
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device_printf(dev, "%s: failed to get DPBP attributes: id=%d, "
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"error=%d\n", __func__, dinfo->id, error);
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goto close_bp;
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}
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(void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token));
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(void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token));
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return (0);
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close_bp:
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(void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token));
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close_rc:
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(void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token));
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detach:
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dpaa2_bp_detach(dev);
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err_exit:
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return (ENXIO);
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}
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static device_method_t dpaa2_bp_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, dpaa2_bp_probe),
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DEVMETHOD(device_attach, dpaa2_bp_attach),
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DEVMETHOD(device_detach, dpaa2_bp_detach),
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DEVMETHOD_END
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};
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static driver_t dpaa2_bp_driver = {
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"dpaa2_bp",
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dpaa2_bp_methods,
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sizeof(struct dpaa2_bp_softc),
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};
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DRIVER_MODULE(dpaa2_bp, dpaa2_rc, dpaa2_bp_driver, 0, 0);
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