1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright © 2021-2022 Dmitry Salychev 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 /* 30 * The DPAA2 Buffer Pool (DPBP) driver. 31 * 32 * The DPBP configures a buffer pool that can be associated with DPAA2 network 33 * and accelerator interfaces. 34 */ 35 36 #include <sys/param.h> 37 #include <sys/kernel.h> 38 #include <sys/bus.h> 39 #include <sys/rman.h> 40 #include <sys/module.h> 41 #include <sys/malloc.h> 42 #include <sys/mutex.h> 43 44 #include <vm/vm.h> 45 46 #include <machine/bus.h> 47 #include <machine/resource.h> 48 49 #include <dev/pci/pcivar.h> 50 51 #include "pcib_if.h" 52 #include "pci_if.h" 53 54 #include "dpaa2_mc.h" 55 #include "dpaa2_mcp.h" 56 #include "dpaa2_swp.h" 57 #include "dpaa2_swp_if.h" 58 #include "dpaa2_cmd_if.h" 59 60 /* DPAA2 Buffer Pool resource specification. */ 61 struct resource_spec dpaa2_bp_spec[] = { 62 /* 63 * DPMCP resources. 64 * 65 * NOTE: MC command portals (MCPs) are used to send commands to, and 66 * receive responses from, the MC firmware. One portal per DPBP. 67 */ 68 #define MCP_RES_NUM (1u) 69 #define MCP_RID_OFF (0u) 70 #define MCP_RID(rid) ((rid) + MCP_RID_OFF) 71 /* --- */ 72 { DPAA2_DEV_MCP, MCP_RID(0), RF_ACTIVE | RF_SHAREABLE | RF_OPTIONAL }, 73 /* --- */ 74 RESOURCE_SPEC_END 75 }; 76 77 static int 78 dpaa2_bp_probe(device_t dev) 79 { 80 /* DPBP device will be added by the parent resource container. */ 81 device_set_desc(dev, "DPAA2 Buffer Pool"); 82 return (BUS_PROBE_DEFAULT); 83 } 84 85 static int 86 dpaa2_bp_detach(device_t dev) 87 { 88 device_t pdev = device_get_parent(dev); 89 device_t child = dev; 90 struct dpaa2_bp_softc *sc = device_get_softc(dev); 91 struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev); 92 struct dpaa2_devinfo *dinfo = device_get_ivars(dev); 93 struct dpaa2_cmd cmd; 94 uint16_t rc_token, bp_token; 95 int error; 96 97 DPAA2_CMD_INIT(&cmd); 98 99 error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token); 100 if (error) { 101 device_printf(dev, "%s: failed to open DPRC: error=%d\n", 102 __func__, error); 103 goto err_exit; 104 } 105 error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token); 106 if (error) { 107 device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n", 108 __func__, dinfo->id, error); 109 goto close_rc; 110 } 111 (void)DPAA2_CMD_BP_DISABLE(dev, child, &cmd); 112 (void)DPAA2_CMD_BP_CLOSE(dev, child, &cmd); 113 (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 114 115 dinfo->portal = NULL; 116 bus_release_resources(sc->dev, dpaa2_bp_spec, sc->res); 117 118 return (0); 119 120 close_rc: 121 (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 122 err_exit: 123 return (ENXIO); 124 } 125 126 static int 127 dpaa2_bp_attach(device_t dev) 128 { 129 device_t pdev = device_get_parent(dev); 130 device_t child = dev; 131 device_t mcp_dev; 132 struct dpaa2_bp_softc *sc = device_get_softc(dev); 133 struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev); 134 struct dpaa2_devinfo *dinfo = device_get_ivars(dev); 135 struct dpaa2_devinfo *mcp_dinfo; 136 struct dpaa2_cmd cmd; 137 uint16_t rc_token, bp_token; 138 int error; 139 140 sc->dev = dev; 141 142 error = bus_alloc_resources(sc->dev, dpaa2_bp_spec, sc->res); 143 if (error) { 144 device_printf(dev, "%s: failed to allocate resources: " 145 "error=%d\n", __func__, error); 146 goto err_exit; 147 } 148 149 /* Send commands to MC via allocated portal. */ 150 mcp_dev = (device_t) rman_get_start(sc->res[MCP_RID(0)]); 151 mcp_dinfo = device_get_ivars(mcp_dev); 152 dinfo->portal = mcp_dinfo->portal; 153 154 DPAA2_CMD_INIT(&cmd); 155 156 error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token); 157 if (error) { 158 device_printf(dev, "%s: failed to open DPRC: error=%d\n", 159 __func__, error); 160 goto detach; 161 } 162 error = DPAA2_CMD_BP_OPEN(dev, child, &cmd, dinfo->id, &bp_token); 163 if (error) { 164 device_printf(dev, "%s: failed to open DPBP: id=%d, error=%d\n", 165 __func__, dinfo->id, error); 166 goto close_rc; 167 } 168 169 error = DPAA2_CMD_BP_RESET(dev, child, &cmd); 170 if (error) { 171 device_printf(dev, "%s: failed to reset DPBP: id=%d, error=%d\n", 172 __func__, dinfo->id, error); 173 goto close_bp; 174 } 175 error = DPAA2_CMD_BP_ENABLE(dev, child, &cmd); 176 if (error) { 177 device_printf(dev, "%s: failed to enable DPBP: id=%d, " 178 "error=%d\n", __func__, dinfo->id, error); 179 goto close_bp; 180 } 181 error = DPAA2_CMD_BP_GET_ATTRIBUTES(dev, child, &cmd, &sc->attr); 182 if (error) { 183 device_printf(dev, "%s: failed to get DPBP attributes: id=%d, " 184 "error=%d\n", __func__, dinfo->id, error); 185 goto close_bp; 186 } 187 188 (void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token)); 189 (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 190 return (0); 191 192 close_bp: 193 (void)DPAA2_CMD_BP_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, bp_token)); 194 close_rc: 195 (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 196 detach: 197 dpaa2_bp_detach(dev); 198 err_exit: 199 return (ENXIO); 200 } 201 202 static device_method_t dpaa2_bp_methods[] = { 203 /* Device interface */ 204 DEVMETHOD(device_probe, dpaa2_bp_probe), 205 DEVMETHOD(device_attach, dpaa2_bp_attach), 206 DEVMETHOD(device_detach, dpaa2_bp_detach), 207 208 DEVMETHOD_END 209 }; 210 211 static driver_t dpaa2_bp_driver = { 212 "dpaa2_bp", 213 dpaa2_bp_methods, 214 sizeof(struct dpaa2_bp_softc), 215 }; 216 217 DRIVER_MODULE(dpaa2_bp, dpaa2_rc, dpaa2_bp_driver, 0, 0); 218