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 Concentrator (DPCON) driver. 31 * 32 * Supports configuration of QBMan channels for advanced scheduling of ingress 33 * packets from one or more network interfaces. 34 * 35 * DPCONs are used to distribute Rx or Tx Confirmation traffic to different 36 * cores, via affine DPIO objects. The implication is that one DPCON must be 37 * available for each core where Rx or Tx Confirmation traffic should be 38 * distributed to. 39 * 40 * QBMan channel contains several work queues. The WQs within a channel have a 41 * priority relative to each other. Each channel consists of either eight or two 42 * WQs, and thus, there are either eight or two possible priorities in a channel. 43 */ 44 45 #include <sys/param.h> 46 #include <sys/kernel.h> 47 #include <sys/bus.h> 48 #include <sys/rman.h> 49 #include <sys/module.h> 50 #include <sys/malloc.h> 51 #include <sys/mutex.h> 52 53 #include <vm/vm.h> 54 55 #include <machine/bus.h> 56 #include <machine/resource.h> 57 58 #include <dev/pci/pcivar.h> 59 60 #include "pcib_if.h" 61 #include "pci_if.h" 62 63 #include "dpaa2_mcp.h" 64 #include "dpaa2_swp.h" 65 #include "dpaa2_mc.h" 66 #include "dpaa2_cmd_if.h" 67 68 /* DPAA2 Concentrator resource specification. */ 69 struct resource_spec dpaa2_con_spec[] = { 70 /* 71 * DPMCP resources. 72 * 73 * NOTE: MC command portals (MCPs) are used to send commands to, and 74 * receive responses from, the MC firmware. One portal per DPCON. 75 */ 76 #define MCP_RES_NUM (1u) 77 #define MCP_RID_OFF (0u) 78 #define MCP_RID(rid) ((rid) + MCP_RID_OFF) 79 /* --- */ 80 { DPAA2_DEV_MCP, MCP_RID(0), RF_ACTIVE | RF_SHAREABLE | RF_OPTIONAL }, 81 /* --- */ 82 RESOURCE_SPEC_END 83 }; 84 85 static int dpaa2_con_detach(device_t dev); 86 87 /* 88 * Device interface. 89 */ 90 91 static int 92 dpaa2_con_probe(device_t dev) 93 { 94 /* DPCON device will be added by a parent resource container itself. */ 95 device_set_desc(dev, "DPAA2 Concentrator"); 96 return (BUS_PROBE_DEFAULT); 97 } 98 99 static int 100 dpaa2_con_detach(device_t dev) 101 { 102 /* TBD */ 103 return (0); 104 } 105 106 static int 107 dpaa2_con_attach(device_t dev) 108 { 109 device_t pdev = device_get_parent(dev); 110 device_t child = dev; 111 device_t mcp_dev; 112 struct dpaa2_con_softc *sc = device_get_softc(dev); 113 struct dpaa2_devinfo *rcinfo = device_get_ivars(pdev); 114 struct dpaa2_devinfo *dinfo = device_get_ivars(dev); 115 struct dpaa2_devinfo *mcp_dinfo; 116 struct dpaa2_cmd cmd; 117 uint16_t rc_token, con_token; 118 int error; 119 120 sc->dev = dev; 121 122 error = bus_alloc_resources(sc->dev, dpaa2_con_spec, sc->res); 123 if (error) { 124 device_printf(dev, "%s: failed to allocate resources: " 125 "error=%d\n", __func__, error); 126 goto err_exit; 127 } 128 129 /* Obtain MC portal. */ 130 mcp_dev = (device_t) rman_get_start(sc->res[MCP_RID(0)]); 131 mcp_dinfo = device_get_ivars(mcp_dev); 132 dinfo->portal = mcp_dinfo->portal; 133 134 DPAA2_CMD_INIT(&cmd); 135 136 error = DPAA2_CMD_RC_OPEN(dev, child, &cmd, rcinfo->id, &rc_token); 137 if (error) { 138 device_printf(dev, "%s: failed to open DPRC: error=%d\n", 139 __func__, error); 140 goto err_exit; 141 } 142 error = DPAA2_CMD_CON_OPEN(dev, child, &cmd, dinfo->id, &con_token); 143 if (error) { 144 device_printf(dev, "%s: failed to open DPCON: id=%d, error=%d\n", 145 __func__, dinfo->id, error); 146 goto close_rc; 147 } 148 149 error = DPAA2_CMD_CON_RESET(dev, child, &cmd); 150 if (error) { 151 device_printf(dev, "%s: failed to reset DPCON: id=%d, " 152 "error=%d\n", __func__, dinfo->id, error); 153 goto close_con; 154 } 155 error = DPAA2_CMD_CON_GET_ATTRIBUTES(dev, child, &cmd, &sc->attr); 156 if (error) { 157 device_printf(dev, "%s: failed to get DPCON attributes: id=%d, " 158 "error=%d\n", __func__, dinfo->id, error); 159 goto close_con; 160 } 161 162 if (bootverbose) { 163 device_printf(dev, "chan_id=%d, priorities=%d\n", 164 sc->attr.chan_id, sc->attr.prior_num); 165 } 166 167 (void)DPAA2_CMD_CON_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, con_token)); 168 (void)DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 169 return (0); 170 171 close_con: 172 DPAA2_CMD_CON_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, con_token)); 173 close_rc: 174 DPAA2_CMD_RC_CLOSE(dev, child, DPAA2_CMD_TK(&cmd, rc_token)); 175 err_exit: 176 return (ENXIO); 177 } 178 179 static device_method_t dpaa2_con_methods[] = { 180 /* Device interface */ 181 DEVMETHOD(device_probe, dpaa2_con_probe), 182 DEVMETHOD(device_attach, dpaa2_con_attach), 183 DEVMETHOD(device_detach, dpaa2_con_detach), 184 185 DEVMETHOD_END 186 }; 187 188 static driver_t dpaa2_con_driver = { 189 "dpaa2_con", 190 dpaa2_con_methods, 191 sizeof(struct dpaa2_con_softc), 192 }; 193 194 DRIVER_MODULE(dpaa2_con, dpaa2_rc, dpaa2_con_driver, 0, 0); 195