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 EARLY_DRIVER_MODULE(bman, simplebus, bman_driver, 0, 0, BUS_PASS_SUPPORTDEV); 71 72 static int 73 bman_fdt_probe(device_t dev) 74 { 75 76 if (!ofw_bus_is_compatible(dev, "fsl,bman")) 77 return (ENXIO); 78 79 device_set_desc(dev, FBMAN_DEVSTR); 80 81 return (BUS_PROBE_DEFAULT); 82 } 83 84 /* 85 * BMAN Portals 86 */ 87 #define BMAN_PORT_DEVSTR "Freescale Buffer Manager - Portals" 88 89 static device_probe_t bman_portals_fdt_probe; 90 static device_attach_t bman_portals_fdt_attach; 91 92 static device_method_t bm_portals_methods[] = { 93 /* Device interface */ 94 DEVMETHOD(device_probe, bman_portals_fdt_probe), 95 DEVMETHOD(device_attach, bman_portals_fdt_attach), 96 DEVMETHOD(device_detach, bman_portals_detach), 97 98 { 0, 0 } 99 }; 100 101 static driver_t bm_portals_driver = { 102 "bman-portals", 103 bm_portals_methods, 104 sizeof(struct dpaa_portals_softc), 105 }; 106 107 EARLY_DRIVER_MODULE(bman_portals, ofwbus, bm_portals_driver, 0, 0, 108 BUS_PASS_BUS); 109 110 static void 111 get_addr_props(phandle_t node, uint32_t *addrp, uint32_t *sizep) 112 { 113 114 *addrp = 2; 115 *sizep = 1; 116 OF_getencprop(node, "#address-cells", addrp, sizeof(*addrp)); 117 OF_getencprop(node, "#size-cells", sizep, sizeof(*sizep)); 118 } 119 120 static int 121 bman_portals_fdt_probe(device_t dev) 122 { 123 phandle_t node; 124 125 if (ofw_bus_is_compatible(dev, "simple-bus")) { 126 node = ofw_bus_get_node(dev); 127 for (node = OF_child(node); node > 0; node = OF_peer(node)) { 128 if (ofw_bus_node_is_compatible(node, "fsl,bman-portal")) 129 break; 130 } 131 if (node <= 0) 132 return (ENXIO); 133 } else if (!ofw_bus_is_compatible(dev, "fsl,bman-portals")) 134 return (ENXIO); 135 136 device_set_desc(dev, BMAN_PORT_DEVSTR); 137 138 return (BUS_PROBE_DEFAULT); 139 } 140 141 static phandle_t 142 bman_portal_find_cpu(int cpu) 143 { 144 phandle_t node; 145 pcell_t reg; 146 147 node = OF_finddevice("/cpus"); 148 if (node == -1) 149 return (node); 150 151 for (node = OF_child(node); node != 0; node = OF_peer(node)) { 152 if (OF_getprop(node, "reg", ®, sizeof(reg)) <= 0) 153 continue; 154 if (reg == cpu) 155 return (node); 156 } 157 return (-1); 158 } 159 160 static int 161 bman_portals_fdt_attach(device_t dev) 162 { 163 struct dpaa_portals_softc *sc; 164 struct resource_list_entry *rle; 165 phandle_t node, child, cpu_node; 166 vm_paddr_t portal_pa; 167 vm_size_t portal_size; 168 uint32_t addr, size; 169 ihandle_t cpu; 170 int cpu_num, cpus, intr_rid; 171 struct dpaa_portals_devinfo di; 172 struct ofw_bus_devinfo ofw_di = {}; 173 174 cpus = 0; 175 sc = device_get_softc(dev); 176 sc->sc_dev = dev; 177 178 node = ofw_bus_get_node(dev); 179 get_addr_props(node, &addr, &size); 180 181 /* Find portals tied to CPUs */ 182 for (child = OF_child(node); child != 0; child = OF_peer(child)) { 183 if (cpus >= mp_ncpus) 184 break; 185 if (!ofw_bus_node_is_compatible(child, "fsl,bman-portal")) { 186 continue; 187 } 188 /* Checkout related cpu */ 189 if (OF_getprop(child, "cpu-handle", (void *)&cpu, 190 sizeof(cpu)) <= 0) { 191 cpu = bman_portal_find_cpu(cpus); 192 if (cpu <= 0) 193 continue; 194 } 195 /* Acquire cpu number */ 196 cpu_node = OF_instance_to_package(cpu); 197 if (OF_getencprop(cpu_node, "reg", &cpu_num, sizeof(cpu_num)) <= 0) { 198 device_printf(dev, "Could not retrieve CPU number.\n"); 199 return (ENXIO); 200 } 201 202 cpus++; 203 204 if (ofw_bus_gen_setup_devinfo(&ofw_di, child) != 0) { 205 device_printf(dev, "could not set up devinfo\n"); 206 continue; 207 } 208 209 resource_list_init(&di.di_res); 210 if (ofw_bus_reg_to_rl(dev, child, addr, size, &di.di_res)) { 211 device_printf(dev, "%s: could not process 'reg' " 212 "property\n", ofw_di.obd_name); 213 ofw_bus_gen_destroy_devinfo(&ofw_di); 214 continue; 215 } 216 if (ofw_bus_intr_to_rl(dev, child, &di.di_res, &intr_rid)) { 217 device_printf(dev, "%s: could not process " 218 "'interrupts' property\n", ofw_di.obd_name); 219 resource_list_free(&di.di_res); 220 ofw_bus_gen_destroy_devinfo(&ofw_di); 221 continue; 222 } 223 di.di_intr_rid = intr_rid; 224 225 ofw_reg_to_paddr(child, 0, &portal_pa, &portal_size, NULL); 226 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 0); 227 228 if (sc->sc_dp_pa == 0) 229 sc->sc_dp_pa = portal_pa - rle->start; 230 231 portal_size = rle->end + 1; 232 rle = resource_list_find(&di.di_res, SYS_RES_MEMORY, 1); 233 portal_size = ulmax(rle->end + 1, portal_size); 234 sc->sc_dp_size = ulmax(sc->sc_dp_size, portal_size); 235 236 if (dpaa_portal_alloc_res(dev, &di, cpu_num)) 237 goto err; 238 } 239 240 ofw_bus_gen_destroy_devinfo(&ofw_di); 241 242 return (bman_portals_attach(dev)); 243 err: 244 resource_list_free(&di.di_res); 245 ofw_bus_gen_destroy_devinfo(&ofw_di); 246 bman_portals_detach(dev); 247 return (ENXIO); 248 } 249