1 /*- 2 * Copyright (c) 2011-2012 Semihalf. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include "opt_platform.h" 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/kernel.h> 34 #include <sys/bus.h> 35 #include <sys/module.h> 36 #include <sys/smp.h> 37 38 #include <machine/bus.h> 39 40 #include <dev/ofw/ofw_bus.h> 41 #include <dev/ofw/ofw_bus_subr.h> 42 #include <dev/ofw/ofw_subr.h> 43 44 #include "bman.h" 45 #include "portals.h" 46 47 #define FBMAN_DEVSTR "Freescale Buffer Manager" 48 49 static int bman_fdt_probe(device_t); 50 51 static device_method_t bman_methods[] = { 52 /* Device interface */ 53 DEVMETHOD(device_probe, bman_fdt_probe), 54 DEVMETHOD(device_attach, bman_attach), 55 DEVMETHOD(device_detach, bman_detach), 56 57 DEVMETHOD(device_suspend, bman_suspend), 58 DEVMETHOD(device_resume, bman_resume), 59 DEVMETHOD(device_shutdown, bman_shutdown), 60 61 { 0, 0 } 62 }; 63 64 static driver_t bman_driver = { 65 "bman", 66 bman_methods, 67 sizeof(struct bman_softc), 68 }; 69 70 static devclass_t bman_devclass; 71 DRIVER_MODULE(bman, simplebus, bman_driver, bman_devclass, 0, 0); 72 73 static int 74 bman_fdt_probe(device_t dev) 75 { 76 77 if (!ofw_bus_is_compatible(dev, "fsl,bman")) 78 return (ENXIO); 79 80 device_set_desc(dev, FBMAN_DEVSTR); 81 82 return (BUS_PROBE_DEFAULT); 83 } 84 85 /* 86 * BMAN Portals 87 */ 88 #define BMAN_PORT_DEVSTR "Freescale Buffer Manager - Portals" 89 90 static device_probe_t bman_portals_fdt_probe; 91 static device_attach_t bman_portals_fdt_attach; 92 93 static device_method_t bm_portals_methods[] = { 94 /* Device interface */ 95 DEVMETHOD(device_probe, bman_portals_fdt_probe), 96 DEVMETHOD(device_attach, bman_portals_fdt_attach), 97 DEVMETHOD(device_detach, bman_portals_detach), 98 99 { 0, 0 } 100 }; 101 102 static driver_t bm_portals_driver = { 103 "bman-portals", 104 bm_portals_methods, 105 sizeof(struct dpaa_portals_softc), 106 }; 107 108 static devclass_t bm_portals_devclass; 109 EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver, 110 bm_portals_devclass, 0, 0, BUS_PASS_BUS); 111 112 static void 113 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep) 114 { 115 116 *addrp = 2; 117 *sizep = 1; 118 OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp)); 119 OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep)); 120 } 121 122 static int 123 bman_portals_fdt_probe(device_t dev) 124 { 125 phandle_t node; 126 127 if (ofw_bus_is_compatible(dev, "simple-bus")) { 128 node = ofw_bus_get_node(dev); 129 for (node = OF_child(node); node > 0; node = OF_peer(node)) { 130 if (ofw_bus_node_is_compatible(node, "fsl,bman-portal")) 131 break; 132 } 133 if (node <= 0) 134 return (ENXIO); 135 } else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals")) 136 return (ENXIO); 137 138 device_set_desc(dev, BMAN_PORT_DEVSTR); 139 140 return (BUS_PROBE_DEFAULT); 141 } 142 143 static phandle_t 144 bman_portal_find_cpu(int cpu) 145 { 146 phandle_t node; 147 pcell_t reg; 148 149 node = OF_finddevice("/cpus"); 150 if (node == -1) 151 return (node); 152 153 for (node = OF_child(node); node != 0; node = OF_peer(node)) { 154 if (OF_getprop(node, "reg", ®, sizeof(reg)) <= 0) 155 continue; 156 if (reg == cpu) 157 return (node); 158 } 159 return (-1); 160 } 161 162 static int 163 bman_portals_fdt_attach(device_t dev) 164 { 165 struct dpaa_portals_softc *sc; 166 struct resource_list_entry *rle; 167 phandle_t node, child, cpu_node; 168 vm_paddr_t portal_pa; 169 vm_size_t portal_size; 170 uint32_t addr, size; 171 ihandle_t cpu; 172 int cpu_num, cpus, intr_rid; 173 struct dpaa_portals_devinfo di; 174 struct ofw_bus_devinfo ofw_di = {}; 175 176 cpus = 0; 177 sc = device_get_softc(dev); 178 sc->sc_dev = dev; 179 180 node = ofw_bus_get_node(dev); 181 get_addr_props(node, &addr, &size); 182 183 /* Find portals tied to CPUs */ 184 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 185 if (cpus >= mp_ncpus) 186 break; 187 if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) { 188 continue; 189 } 190 /* Checkout related cpu */ 191 if (OF_getprop(child, "cpu-handle", (void *)&cpu, 192 sizeof(cpu)) <= 0) { 193 cpu = bman_portal_find_cpu(cpus); 194 if (cpu <= 0) 195 continue; 196 } 197 /* Acquire cpu number */ 198 cpu_node = OF_instance_to_package(cpu); 199 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) { 200 device_printf(dev, "Could not retrieve CPU number.\n"); 201 return (ENXIO); 202 } 203 204 cpus++; 205 206 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) { 207 device_printf(dev, "could not set up devinfo\n"); 208 continue; 209 } 210 211 resource_list_init(&di.di_res); 212 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) { 213 device_printf(dev, "%s: could not process 'reg' " 214 "property\n", ofw_di.obd_name); 215 ofw_bus_gen_destroy_devinfo(&ofw_di); 216 continue; 217 } 218 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) { 219 device_printf(dev, "%s: could not process " 220 "'interrupts' property\n", ofw_di.obd_name); 221 resource_list_free(&di.di_res); 222 ofw_bus_gen_destroy_devinfo(&ofw_di); 223 continue; 224 } 225 di.di_intr_rid = intr_rid; 226 227 ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL); 228 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0); 229 230 if (sc->sc_dp_pa == 0) 231 sc->sc_dp_pa = portal_pa - rle->start; 232 233 portal_size = rle->end + 1; 234 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1); 235 portal_size = ulmax(rle->end + 1, portal_size); 236 sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size); 237 238 if (dpaa_portal_alloc_res(dev, &di, cpu_num)) 239 goto err; 240 } 241 242 ofw_bus_gen_destroy_devinfo(&ofw_di); 243 244 return (bman_portals_attach(dev)); 245 err: 246 resource_list_free(&di.di_res); 247 ofw_bus_gen_destroy_devinfo(&ofw_di); 248 bman_portals_detach(dev); 249 return (ENXIO); 250 } 251