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/*-
* 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 <sys/cdefs.h>
/*
* The DPAA2 Buffer Pool (DPBP) driver.
*
* The DPBP configures a buffer pool that can be associated with DPAA2 network
* and accelerator interfaces.
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <vm/vm.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <dev/pci/pcivar.h>
#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);
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