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 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/bus.h> 33 #include <sys/module.h> 34 #include <sys/smp.h> 35 36 #include <machine/bus.h> 37 38 #include <dev/ofw/ofw_bus.h> 39 #include <dev/ofw/ofw_bus_subr.h> 40 #include <dev/ofw/ofw_subr.h> 41 42 #include "bman.h" 43 #include "portals.h" 44 45 #define FBMAN_DEVSTR "Freescale Buffer Manager" 46 47 static int bman_fdt_probe(device_t); 48 49 static device_method_t bman_methods[] = { 50 /* Device interface */ 51 DEVMETHOD(device_probe, bman_fdt_probe), 52 DEVMETHOD(device_attach, bman_attach), 53 DEVMETHOD(device_detach, bman_detach), 54 55 DEVMETHOD(device_suspend, bman_suspend), 56 DEVMETHOD(device_resume, bman_resume), 57 DEVMETHOD(device_shutdown, bman_shutdown), 58 59 { 0, 0 } 60 }; 61 62 static driver_t bman_driver = { 63 "bman", 64 bman_methods, 65 sizeof(struct bman_softc), 66 }; 67 68 EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, 0, 0, BUS_PASS_SUPPORTDEV); 69 70 static int 71 bman_fdt_probe(device_t dev) 72 { 73 74 if (!ofw_bus_is_compatible(dev, "fsl,bman")) 75 return (ENXIO); 76 77 device_set_desc(dev, FBMAN_DEVSTR); 78 79 return (BUS_PROBE_DEFAULT); 80 } 81 82 /* 83 * BMAN Portals 84 */ 85 #define BMAN_PORT_DEVSTR "Freescale Buffer Manager - Portals" 86 87 static device_probe_t bman_portals_fdt_probe; 88 static device_attach_t bman_portals_fdt_attach; 89 90 static device_method_t bm_portals_methods[] = { 91 /* Device interface */ 92 DEVMETHOD(device_probe, bman_portals_fdt_probe), 93 DEVMETHOD(device_attach, bman_portals_fdt_attach), 94 DEVMETHOD(device_detach, bman_portals_detach), 95 96 { 0, 0 } 97 }; 98 99 static driver_t bm_portals_driver = { 100 "bman-portals", 101 bm_portals_methods, 102 sizeof(struct dpaa_portals_softc), 103 }; 104 105 EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver, 0, 0, 106 BUS_PASS_BUS); 107 108 static void 109 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep) 110 { 111 112 *addrp = 2; 113 *sizep = 1; 114 OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp)); 115 OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep)); 116 } 117 118 static int 119 bman_portals_fdt_probe(device_t dev) 120 { 121 phandle_t node; 122 123 if (ofw_bus_is_compatible(dev, "simple-bus")) { 124 node = ofw_bus_get_node(dev); 125 for (node = OF_child(node); node > 0; node = OF_peer(node)) { 126 if (ofw_bus_node_is_compatible(node, "fsl,bman-portal")) 127 break; 128 } 129 if (node <= 0) 130 return (ENXIO); 131 } else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals")) 132 return (ENXIO); 133 134 device_set_desc(dev, BMAN_PORT_DEVSTR); 135 136 return (BUS_PROBE_DEFAULT); 137 } 138 139 static phandle_t 140 bman_portal_find_cpu(int cpu) 141 { 142 phandle_t node; 143 pcell_t reg; 144 145 node = OF_finddevice("/cpus"); 146 if (node == -1) 147 return (node); 148 149 for (node = OF_child(node); node != 0; node = OF_peer(node)) { 150 if (OF_getprop(node, "reg", ®, sizeof(reg)) <= 0) 151 continue; 152 if (reg == cpu) 153 return (node); 154 } 155 return (-1); 156 } 157 158 static int 159 bman_portals_fdt_attach(device_t dev) 160 { 161 struct dpaa_portals_softc *sc; 162 struct resource_list_entry *rle; 163 phandle_t node, child, cpu_node; 164 vm_paddr_t portal_pa; 165 vm_size_t portal_size; 166 uint32_t addr, size; 167 ihandle_t cpu; 168 int cpu_num, cpus, intr_rid; 169 struct dpaa_portals_devinfo di; 170 struct ofw_bus_devinfo ofw_di = {}; 171 172 cpus = 0; 173 sc = device_get_softc(dev); 174 sc->sc_dev = dev; 175 176 node = ofw_bus_get_node(dev); 177 get_addr_props(node, &addr, &size); 178 179 /* Find portals tied to CPUs */ 180 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 181 if (cpus >= mp_ncpus) 182 break; 183 if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) { 184 continue; 185 } 186 /* Checkout related cpu */ 187 if (OF_getprop(child, "cpu-handle", (void *)&cpu, 188 sizeof(cpu)) <= 0) { 189 cpu = bman_portal_find_cpu(cpus); 190 if (cpu <= 0) 191 continue; 192 } 193 /* Acquire cpu number */ 194 cpu_node = OF_instance_to_package(cpu); 195 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) { 196 device_printf(dev, "Could not retrieve CPU number.\n"); 197 return (ENXIO); 198 } 199 200 cpus++; 201 202 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) { 203 device_printf(dev, "could not set up devinfo\n"); 204 continue; 205 } 206 207 resource_list_init(&di.di_res); 208 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) { 209 device_printf(dev, "%s: could not process 'reg' " 210 "property\n", ofw_di.obd_name); 211 ofw_bus_gen_destroy_devinfo(&ofw_di); 212 continue; 213 } 214 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) { 215 device_printf(dev, "%s: could not process " 216 "'interrupts' property\n", ofw_di.obd_name); 217 resource_list_free(&di.di_res); 218 ofw_bus_gen_destroy_devinfo(&ofw_di); 219 continue; 220 } 221 di.di_intr_rid = intr_rid; 222 223 ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL); 224 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0); 225 226 if (sc->sc_dp_pa == 0) 227 sc->sc_dp_pa = portal_pa - rle->start; 228 229 portal_size = rle->end + 1; 230 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1); 231 portal_size = ulmax(rle->end + 1, portal_size); 232 sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size); 233 234 if (dpaa_portal_alloc_res(dev, &di, cpu_num)) 235 goto err; 236 } 237 238 ofw_bus_gen_destroy_devinfo(&ofw_di); 239 240 return (bman_portals_attach(dev)); 241 err: 242 resource_list_free(&di.di_res); 243 ofw_bus_gen_destroy_devinfo(&ofw_di); 244 bman_portals_detach(dev); 245 return (ENXIO); 246 } 247