if_xe.c revision 1.5.2.2
1 1.5.2.2 jdolecek /* $NetBSD: if_xe.c,v 1.5.2.2 2002/10/10 18:34:37 jdolecek Exp $ */ 2 1.1 dbj /* 3 1.1 dbj * Copyright (c) 1998 Darrin B. Jewell 4 1.1 dbj * All rights reserved. 5 1.1 dbj * 6 1.1 dbj * Redistribution and use in source and binary forms, with or without 7 1.1 dbj * modification, are permitted provided that the following conditions 8 1.1 dbj * are met: 9 1.1 dbj * 1. Redistributions of source code must retain the above copyright 10 1.1 dbj * notice, this list of conditions and the following disclaimer. 11 1.1 dbj * 2. Redistributions in binary form must reproduce the above copyright 12 1.1 dbj * notice, this list of conditions and the following disclaimer in the 13 1.1 dbj * documentation and/or other materials provided with the distribution. 14 1.1 dbj * 3. All advertising materials mentioning features or use of this software 15 1.1 dbj * must display the following acknowledgement: 16 1.1 dbj * This product includes software developed by Darrin B. Jewell 17 1.1 dbj * 4. The name of the author may not be used to endorse or promote products 18 1.1 dbj * derived from this software without specific prior written permission 19 1.1 dbj * 20 1.1 dbj * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 1.1 dbj * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 1.1 dbj * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 1.1 dbj * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 1.1 dbj * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 1.1 dbj * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 1.1 dbj * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 1.1 dbj * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 1.1 dbj * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 1.1 dbj * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 1.1 dbj */ 31 1.1 dbj 32 1.2 jonathan #include "opt_inet.h" 33 1.1 dbj #include "bpfilter.h" 34 1.1 dbj 35 1.1 dbj #include <sys/param.h> 36 1.1 dbj #include <sys/systm.h> 37 1.1 dbj #include <sys/mbuf.h> 38 1.1 dbj #include <sys/syslog.h> 39 1.1 dbj #include <sys/socket.h> 40 1.1 dbj #include <sys/device.h> 41 1.1 dbj 42 1.1 dbj #include <net/if.h> 43 1.1 dbj #include <net/if_ether.h> 44 1.1 dbj #include <net/if_media.h> 45 1.1 dbj 46 1.1 dbj #ifdef INET 47 1.1 dbj #include <netinet/in.h> 48 1.1 dbj #include <netinet/if_inarp.h> 49 1.1 dbj #endif 50 1.1 dbj 51 1.1 dbj #include <machine/autoconf.h> 52 1.1 dbj #include <machine/cpu.h> 53 1.1 dbj #include <machine/intr.h> 54 1.1 dbj #include <machine/bus.h> 55 1.1 dbj 56 1.1 dbj #include <next68k/next68k/isr.h> 57 1.1 dbj 58 1.1 dbj #include <next68k/dev/mb8795reg.h> 59 1.1 dbj #include <next68k/dev/mb8795var.h> 60 1.1 dbj 61 1.5.2.2 jdolecek #include <next68k/dev/bmapreg.h> 62 1.5.2.2 jdolecek #include <next68k/dev/intiovar.h> 63 1.1 dbj #include <next68k/dev/nextdmareg.h> 64 1.1 dbj #include <next68k/dev/nextdmavar.h> 65 1.1 dbj 66 1.1 dbj #include <next68k/dev/if_xevar.h> 67 1.5.2.2 jdolecek #include <next68k/dev/if_xereg.h> 68 1.1 dbj 69 1.5.2.2 jdolecek #ifdef DEBUG 70 1.5.2.2 jdolecek #define XE_DEBUG 71 1.5.2.2 jdolecek #endif 72 1.5.2.2 jdolecek 73 1.5.2.2 jdolecek #ifdef XE_DEBUG 74 1.5.2.2 jdolecek int xe_debug = 0; 75 1.5.2.2 jdolecek #define DPRINTF(x) if (xe_debug) printf x; 76 1.5.2.2 jdolecek extern char *ndtracep; 77 1.5.2.2 jdolecek extern char ndtrace[]; 78 1.5.2.2 jdolecek extern int ndtraceshow; 79 1.5.2.2 jdolecek #define NDTRACEIF(x) if (10 && ndtracep < (ndtrace + 8192)) do {x;} while (0) 80 1.5.2.2 jdolecek #else 81 1.5.2.2 jdolecek #define DPRINTF(x) 82 1.5.2.2 jdolecek #define NDTRACEIF(x) 83 1.5.2.2 jdolecek #endif 84 1.5.2.2 jdolecek #define PRINTF(x) printf x; 85 1.5.2.2 jdolecek 86 1.5.2.2 jdolecek extern int turbo; 87 1.1 dbj 88 1.1 dbj int xe_match __P((struct device *, struct cfdata *, void *)); 89 1.1 dbj void xe_attach __P((struct device *, struct device *, void *)); 90 1.1 dbj int xe_tint __P((void *)); 91 1.1 dbj int xe_rint __P((void *)); 92 1.1 dbj 93 1.5.2.2 jdolecek struct mbuf * xe_dma_rxmap_load __P((struct mb8795_softc *, 94 1.5.2.2 jdolecek bus_dmamap_t map)); 95 1.5.2.2 jdolecek 96 1.5.2.2 jdolecek bus_dmamap_t xe_dma_rx_continue __P((void *)); 97 1.5.2.2 jdolecek void xe_dma_rx_completed __P((bus_dmamap_t,void *)); 98 1.5.2.2 jdolecek bus_dmamap_t xe_dma_tx_continue __P((void *)); 99 1.5.2.2 jdolecek void xe_dma_tx_completed __P((bus_dmamap_t,void *)); 100 1.5.2.2 jdolecek void xe_dma_rx_shutdown __P((void *)); 101 1.5.2.2 jdolecek void xe_dma_tx_shutdown __P((void *)); 102 1.5.2.2 jdolecek 103 1.5.2.2 jdolecek static void findchannel_defer __P((struct device *)); 104 1.1 dbj 105 1.5.2.2 jdolecek CFATTACH_DECL(xe, sizeof(struct xe_softc), 106 1.5.2.2 jdolecek xe_match, xe_attach, NULL, NULL); 107 1.5.2.2 jdolecek 108 1.5.2.2 jdolecek static int xe_dma_medias[] = { 109 1.5.2.1 jdolecek IFM_ETHER|IFM_AUTO, 110 1.5.2.1 jdolecek IFM_ETHER|IFM_10_T, 111 1.5.2.1 jdolecek IFM_ETHER|IFM_10_2, 112 1.5.2.1 jdolecek }; 113 1.5.2.2 jdolecek static int nxe_dma_medias = (sizeof(xe_dma_medias)/sizeof(xe_dma_medias[0])); 114 1.5.2.2 jdolecek 115 1.5.2.2 jdolecek static int attached = 0; 116 1.5.2.2 jdolecek 117 1.5.2.2 jdolecek /* 118 1.5.2.2 jdolecek * Functions and the switch for the MI code. 119 1.5.2.2 jdolecek */ 120 1.5.2.2 jdolecek u_char xe_read_reg __P((struct mb8795_softc *, int)); 121 1.5.2.2 jdolecek void xe_write_reg __P((struct mb8795_softc *, int, u_char)); 122 1.5.2.2 jdolecek void xe_dma_reset __P((struct mb8795_softc *)); 123 1.5.2.2 jdolecek void xe_dma_rx_setup __P((struct mb8795_softc *)); 124 1.5.2.2 jdolecek void xe_dma_rx_go __P((struct mb8795_softc *)); 125 1.5.2.2 jdolecek struct mbuf * xe_dma_rx_mbuf __P((struct mb8795_softc *)); 126 1.5.2.2 jdolecek void xe_dma_tx_setup __P((struct mb8795_softc *)); 127 1.5.2.2 jdolecek void xe_dma_tx_go __P((struct mb8795_softc *)); 128 1.5.2.2 jdolecek int xe_dma_tx_mbuf __P((struct mb8795_softc *, struct mbuf *)); 129 1.5.2.2 jdolecek int xe_dma_tx_isactive __P((struct mb8795_softc *)); 130 1.5.2.2 jdolecek #if 0 131 1.5.2.2 jdolecek int xe_dma_setup __P((struct mb8795_softc *, caddr_t *, 132 1.5.2.2 jdolecek size_t *, int, size_t *)); 133 1.5.2.2 jdolecek void xe_dma_go __P((struct mb8795_softc *)); 134 1.5.2.2 jdolecek void xe_dma_stop __P((struct mb8795_softc *)); 135 1.5.2.2 jdolecek int xe_dma_isactive __P((struct mb8795_softc *)); 136 1.5.2.2 jdolecek #endif 137 1.5.2.2 jdolecek 138 1.5.2.2 jdolecek struct mb8795_glue xe_glue = { 139 1.5.2.2 jdolecek xe_read_reg, 140 1.5.2.2 jdolecek xe_write_reg, 141 1.5.2.2 jdolecek xe_dma_reset, 142 1.5.2.2 jdolecek xe_dma_rx_setup, 143 1.5.2.2 jdolecek xe_dma_rx_go, 144 1.5.2.2 jdolecek xe_dma_rx_mbuf, 145 1.5.2.2 jdolecek xe_dma_tx_setup, 146 1.5.2.2 jdolecek xe_dma_tx_go, 147 1.5.2.2 jdolecek xe_dma_tx_mbuf, 148 1.5.2.2 jdolecek xe_dma_tx_isactive, 149 1.5.2.2 jdolecek #if 0 150 1.5.2.2 jdolecek xe_dma_setup, 151 1.5.2.2 jdolecek xe_dma_go, 152 1.5.2.2 jdolecek xe_dma_stop, 153 1.5.2.2 jdolecek xe_dma_isactive, 154 1.5.2.2 jdolecek NULL, /* gl_clear_latched_intr */ 155 1.5.2.2 jdolecek #endif 156 1.5.2.2 jdolecek }; 157 1.5.2.1 jdolecek 158 1.1 dbj int 159 1.1 dbj xe_match(parent, match, aux) 160 1.1 dbj struct device *parent; 161 1.1 dbj struct cfdata *match; 162 1.1 dbj void *aux; 163 1.1 dbj { 164 1.5.2.2 jdolecek struct intio_attach_args *ia = (struct intio_attach_args *)aux; 165 1.5.2.2 jdolecek 166 1.5.2.2 jdolecek if (attached) 167 1.5.2.2 jdolecek return (0); 168 1.5.2.2 jdolecek 169 1.5.2.2 jdolecek ia->ia_addr = (void *)NEXT_P_ENET; 170 1.5.2.2 jdolecek 171 1.5.2.2 jdolecek return (1); 172 1.5.2.2 jdolecek } 173 1.5.2.2 jdolecek 174 1.5.2.2 jdolecek static void 175 1.5.2.2 jdolecek findchannel_defer(self) 176 1.5.2.2 jdolecek struct device *self; 177 1.5.2.2 jdolecek { 178 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)self; 179 1.5.2.2 jdolecek struct mb8795_softc *sc = &xsc->sc_mb8795; 180 1.5.2.2 jdolecek int i, error; 181 1.5.2.2 jdolecek 182 1.5.2.2 jdolecek if (!xsc->sc_txdma) { 183 1.5.2.2 jdolecek xsc->sc_txdma = nextdma_findchannel ("enetx"); 184 1.5.2.2 jdolecek if (xsc->sc_txdma == NULL) 185 1.5.2.2 jdolecek panic ("%s: can't find enetx dma channel", 186 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 187 1.5.2.2 jdolecek } 188 1.5.2.2 jdolecek if (!xsc->sc_rxdma) { 189 1.5.2.2 jdolecek xsc->sc_rxdma = nextdma_findchannel ("enetr"); 190 1.5.2.2 jdolecek if (xsc->sc_rxdma == NULL) 191 1.5.2.2 jdolecek panic ("%s: can't find enetr dma channel", 192 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 193 1.5.2.2 jdolecek } 194 1.5.2.2 jdolecek printf ("%s: using dma channels %s %s\n", sc->sc_dev.dv_xname, 195 1.5.2.2 jdolecek xsc->sc_txdma->sc_dev.dv_xname, xsc->sc_rxdma->sc_dev.dv_xname); 196 1.5.2.2 jdolecek 197 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_rxdma, continue_cb, xe_dma_rx_continue); 198 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_rxdma, completed_cb, xe_dma_rx_completed); 199 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_rxdma, shutdown_cb, xe_dma_rx_shutdown); 200 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_rxdma, cb_arg, sc); 201 1.5.2.2 jdolecek 202 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_txdma, continue_cb, xe_dma_tx_continue); 203 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_txdma, completed_cb, xe_dma_tx_completed); 204 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_txdma, shutdown_cb, xe_dma_tx_shutdown); 205 1.5.2.2 jdolecek nextdma_setconf (xsc->sc_txdma, cb_arg, sc); 206 1.5.2.2 jdolecek 207 1.5.2.2 jdolecek /* Initialize the dma maps */ 208 1.5.2.2 jdolecek error = bus_dmamap_create(xsc->sc_txdma->sc_dmat, MCLBYTES, 209 1.5.2.2 jdolecek (MCLBYTES/MSIZE), MCLBYTES, 0, BUS_DMA_ALLOCNOW, 210 1.5.2.2 jdolecek &xsc->sc_tx_dmamap); 211 1.5.2.2 jdolecek if (error) { 212 1.5.2.2 jdolecek panic("%s: can't create tx DMA map, error = %d", 213 1.5.2.2 jdolecek sc->sc_dev.dv_xname, error); 214 1.5.2.2 jdolecek } 215 1.5.2.2 jdolecek 216 1.5.2.2 jdolecek for(i = 0; i < MB8795_NRXBUFS; i++) { 217 1.5.2.2 jdolecek error = bus_dmamap_create(xsc->sc_rxdma->sc_dmat, MCLBYTES, 218 1.5.2.2 jdolecek (MCLBYTES/MSIZE), MCLBYTES, 0, BUS_DMA_ALLOCNOW, 219 1.5.2.2 jdolecek &xsc->sc_rx_dmamap[i]); 220 1.5.2.2 jdolecek if (error) { 221 1.5.2.2 jdolecek panic("%s: can't create rx DMA map, error = %d", 222 1.5.2.2 jdolecek sc->sc_dev.dv_xname, error); 223 1.5.2.2 jdolecek } 224 1.5.2.2 jdolecek xsc->sc_rx_mb_head[i] = NULL; 225 1.5.2.2 jdolecek } 226 1.5.2.2 jdolecek xsc->sc_rx_loaded_idx = 0; 227 1.5.2.2 jdolecek xsc->sc_rx_completed_idx = 0; 228 1.5.2.2 jdolecek xsc->sc_rx_handled_idx = 0; 229 1.5.2.2 jdolecek 230 1.5.2.2 jdolecek /* @@@ more next hacks 231 1.5.2.2 jdolecek * the 2000 covers at least a 1500 mtu + headers 232 1.5.2.2 jdolecek * + DMA_BEGINALIGNMENT+ DMA_ENDALIGNMENT 233 1.5.2.2 jdolecek */ 234 1.5.2.2 jdolecek xsc->sc_txbuf = malloc(2000, M_DEVBUF, M_NOWAIT); 235 1.5.2.2 jdolecek if (!xsc->sc_txbuf) 236 1.5.2.2 jdolecek panic("%s: can't malloc tx DMA buffer", sc->sc_dev.dv_xname); 237 1.5.2.2 jdolecek 238 1.5.2.2 jdolecek xsc->sc_tx_mb_head = NULL; 239 1.5.2.2 jdolecek xsc->sc_tx_loaded = 0; 240 1.5.2.2 jdolecek 241 1.5.2.2 jdolecek mb8795_config(sc, xe_dma_medias, nxe_dma_medias, xe_dma_medias[0]); 242 1.5.2.2 jdolecek 243 1.5.2.2 jdolecek isrlink_autovec(xe_tint, sc, NEXT_I_IPL(NEXT_I_ENETX), 1, NULL); 244 1.5.2.2 jdolecek INTR_ENABLE(NEXT_I_ENETX); 245 1.5.2.2 jdolecek isrlink_autovec(xe_rint, sc, NEXT_I_IPL(NEXT_I_ENETR), 1, NULL); 246 1.5.2.2 jdolecek INTR_ENABLE(NEXT_I_ENETR); 247 1.1 dbj } 248 1.1 dbj 249 1.1 dbj void 250 1.1 dbj xe_attach(parent, self, aux) 251 1.1 dbj struct device *parent, *self; 252 1.1 dbj void *aux; 253 1.1 dbj { 254 1.5.2.2 jdolecek struct intio_attach_args *ia = (struct intio_attach_args *)aux; 255 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)self; 256 1.5.2.2 jdolecek struct mb8795_softc *sc = &xsc->sc_mb8795; 257 1.5.2.2 jdolecek 258 1.5.2.2 jdolecek DPRINTF(("%s: xe_attach()\n",sc->sc_dev.dv_xname)); 259 1.5.2.2 jdolecek 260 1.5.2.2 jdolecek { 261 1.5.2.2 jdolecek extern u_char rom_enetaddr[6]; /* kludge from machdep.c:next68k_bootargs() */ 262 1.5.2.2 jdolecek int i; 263 1.5.2.2 jdolecek for(i=0;i<6;i++) { 264 1.5.2.2 jdolecek sc->sc_enaddr[i] = rom_enetaddr[i]; 265 1.5.2.2 jdolecek } 266 1.5.2.2 jdolecek } 267 1.5.2.2 jdolecek 268 1.5.2.2 jdolecek printf("\n%s: MAC address %02x:%02x:%02x:%02x:%02x:%02x\n", 269 1.5.2.2 jdolecek sc->sc_dev.dv_xname, 270 1.5.2.2 jdolecek sc->sc_enaddr[0],sc->sc_enaddr[1],sc->sc_enaddr[2], 271 1.5.2.2 jdolecek sc->sc_enaddr[3],sc->sc_enaddr[4],sc->sc_enaddr[5]); 272 1.5.2.2 jdolecek 273 1.5.2.2 jdolecek xsc->sc_bst = ia->ia_bst; 274 1.5.2.2 jdolecek if (bus_space_map(xsc->sc_bst, NEXT_P_ENET, 275 1.5.2.2 jdolecek XE_DEVICE_SIZE, 0, &xsc->sc_bsh)) { 276 1.5.2.2 jdolecek panic("\n%s: can't map mb8795 registers", 277 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 278 1.5.2.2 jdolecek } 279 1.1 dbj 280 1.5.2.2 jdolecek sc->sc_bmap_bst = ia->ia_bst; 281 1.5.2.2 jdolecek if (bus_space_map(sc->sc_bmap_bst, NEXT_P_BMAP, 282 1.5.2.2 jdolecek BMAP_SIZE, 0, &sc->sc_bmap_bsh)) { 283 1.5.2.2 jdolecek panic("\n%s: can't map bmap registers", 284 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 285 1.5.2.2 jdolecek } 286 1.1 dbj 287 1.5.2.2 jdolecek /* 288 1.5.2.2 jdolecek * Set up glue for MI code. 289 1.1 dbj */ 290 1.5.2.2 jdolecek sc->sc_glue = &xe_glue; 291 1.1 dbj 292 1.5.2.2 jdolecek xsc->sc_txdma = nextdma_findchannel ("enetx"); 293 1.5.2.2 jdolecek xsc->sc_rxdma = nextdma_findchannel ("enetr"); 294 1.5.2.2 jdolecek if (xsc->sc_rxdma && xsc->sc_txdma) { 295 1.5.2.2 jdolecek findchannel_defer (self); 296 1.5.2.2 jdolecek } else { 297 1.5.2.2 jdolecek config_defer (self, findchannel_defer); 298 1.5.2.2 jdolecek } 299 1.1 dbj 300 1.5.2.2 jdolecek attached = 1; 301 1.1 dbj } 302 1.1 dbj 303 1.1 dbj int 304 1.1 dbj xe_tint(arg) 305 1.5.2.2 jdolecek void *arg; 306 1.1 dbj { 307 1.5.2.2 jdolecek if (!INTR_OCCURRED(NEXT_I_ENETX)) 308 1.5.2.2 jdolecek return 0; 309 1.5.2.2 jdolecek mb8795_tint((struct mb8795_softc *)arg); 310 1.5.2.2 jdolecek return(1); 311 1.1 dbj } 312 1.1 dbj 313 1.1 dbj int 314 1.1 dbj xe_rint(arg) 315 1.5.2.2 jdolecek void *arg; 316 1.5.2.2 jdolecek { 317 1.5.2.2 jdolecek if (!INTR_OCCURRED(NEXT_I_ENETR)) 318 1.5.2.2 jdolecek return(0); 319 1.5.2.2 jdolecek mb8795_rint((struct mb8795_softc *)arg); 320 1.5.2.2 jdolecek return(1); 321 1.5.2.2 jdolecek } 322 1.5.2.2 jdolecek 323 1.5.2.2 jdolecek /* 324 1.5.2.2 jdolecek * Glue functions. 325 1.5.2.2 jdolecek */ 326 1.5.2.2 jdolecek 327 1.5.2.2 jdolecek u_char 328 1.5.2.2 jdolecek xe_read_reg(sc, reg) 329 1.5.2.2 jdolecek struct mb8795_softc *sc; 330 1.5.2.2 jdolecek int reg; 331 1.5.2.2 jdolecek { 332 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 333 1.5.2.2 jdolecek 334 1.5.2.2 jdolecek return(bus_space_read_1(xsc->sc_bst, xsc->sc_bsh, reg)); 335 1.5.2.2 jdolecek } 336 1.5.2.2 jdolecek 337 1.5.2.2 jdolecek void 338 1.5.2.2 jdolecek xe_write_reg(sc, reg, val) 339 1.5.2.2 jdolecek struct mb8795_softc *sc; 340 1.5.2.2 jdolecek int reg; 341 1.5.2.2 jdolecek u_char val; 342 1.5.2.2 jdolecek { 343 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 344 1.5.2.2 jdolecek 345 1.5.2.2 jdolecek bus_space_write_1(xsc->sc_bst, xsc->sc_bsh, reg, val); 346 1.5.2.2 jdolecek } 347 1.5.2.2 jdolecek 348 1.5.2.2 jdolecek void 349 1.5.2.2 jdolecek xe_dma_reset(sc) 350 1.5.2.2 jdolecek struct mb8795_softc *sc; 351 1.5.2.2 jdolecek { 352 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 353 1.5.2.2 jdolecek int i; 354 1.5.2.2 jdolecek 355 1.5.2.2 jdolecek DPRINTF(("xe dma reset\n")); 356 1.5.2.2 jdolecek 357 1.5.2.2 jdolecek nextdma_reset(xsc->sc_rxdma); 358 1.5.2.2 jdolecek nextdma_reset(xsc->sc_txdma); 359 1.5.2.2 jdolecek 360 1.5.2.2 jdolecek if (xsc->sc_tx_loaded) { 361 1.5.2.2 jdolecek bus_dmamap_sync(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap, 362 1.5.2.2 jdolecek 0, xsc->sc_tx_dmamap->dm_mapsize, 363 1.5.2.2 jdolecek BUS_DMASYNC_POSTWRITE); 364 1.5.2.2 jdolecek bus_dmamap_unload(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap); 365 1.5.2.2 jdolecek xsc->sc_tx_loaded = 0; 366 1.5.2.2 jdolecek } 367 1.5.2.2 jdolecek if (xsc->sc_tx_mb_head) { 368 1.5.2.2 jdolecek m_freem(xsc->sc_tx_mb_head); 369 1.5.2.2 jdolecek xsc->sc_tx_mb_head = NULL; 370 1.5.2.2 jdolecek } 371 1.5.2.2 jdolecek 372 1.5.2.2 jdolecek for(i = 0; i < MB8795_NRXBUFS; i++) { 373 1.5.2.2 jdolecek if (xsc->sc_rx_mb_head[i]) { 374 1.5.2.2 jdolecek bus_dmamap_unload(xsc->sc_rxdma->sc_dmat, xsc->sc_rx_dmamap[i]); 375 1.5.2.2 jdolecek m_freem(xsc->sc_rx_mb_head[i]); 376 1.5.2.2 jdolecek xsc->sc_rx_mb_head[i] = NULL; 377 1.5.2.2 jdolecek } 378 1.5.2.2 jdolecek } 379 1.5.2.2 jdolecek } 380 1.5.2.2 jdolecek 381 1.5.2.2 jdolecek void 382 1.5.2.2 jdolecek xe_dma_rx_setup (sc) 383 1.5.2.2 jdolecek struct mb8795_softc *sc; 384 1.5.2.2 jdolecek { 385 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 386 1.5.2.2 jdolecek int i; 387 1.5.2.2 jdolecek 388 1.5.2.2 jdolecek DPRINTF(("xe dma rx setup\n")); 389 1.5.2.2 jdolecek 390 1.5.2.2 jdolecek for(i = 0; i < MB8795_NRXBUFS; i++) { 391 1.5.2.2 jdolecek xsc->sc_rx_mb_head[i] = 392 1.5.2.2 jdolecek xe_dma_rxmap_load(sc, xsc->sc_rx_dmamap[i]); 393 1.5.2.2 jdolecek } 394 1.5.2.2 jdolecek xsc->sc_rx_loaded_idx = 0; 395 1.5.2.2 jdolecek xsc->sc_rx_completed_idx = 0; 396 1.5.2.2 jdolecek xsc->sc_rx_handled_idx = 0; 397 1.5.2.2 jdolecek 398 1.5.2.2 jdolecek nextdma_init(xsc->sc_rxdma); 399 1.5.2.2 jdolecek } 400 1.5.2.2 jdolecek 401 1.5.2.2 jdolecek void 402 1.5.2.2 jdolecek xe_dma_rx_go (sc) 403 1.5.2.2 jdolecek struct mb8795_softc *sc; 404 1.5.2.2 jdolecek { 405 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 406 1.5.2.2 jdolecek 407 1.5.2.2 jdolecek DPRINTF(("xe dma rx go\n")); 408 1.5.2.2 jdolecek 409 1.5.2.2 jdolecek nextdma_start(xsc->sc_rxdma, DMACSR_SETREAD); 410 1.5.2.2 jdolecek } 411 1.5.2.2 jdolecek 412 1.5.2.2 jdolecek struct mbuf * 413 1.5.2.2 jdolecek xe_dma_rx_mbuf (sc) 414 1.5.2.2 jdolecek struct mb8795_softc *sc; 415 1.5.2.2 jdolecek { 416 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 417 1.5.2.2 jdolecek bus_dmamap_t map; 418 1.5.2.2 jdolecek struct mbuf *m; 419 1.5.2.2 jdolecek 420 1.5.2.2 jdolecek m = NULL; 421 1.5.2.2 jdolecek if (xsc->sc_rx_handled_idx != xsc->sc_rx_completed_idx) { 422 1.5.2.2 jdolecek xsc->sc_rx_handled_idx++; 423 1.5.2.2 jdolecek xsc->sc_rx_handled_idx %= MB8795_NRXBUFS; 424 1.5.2.2 jdolecek 425 1.5.2.2 jdolecek map = xsc->sc_rx_dmamap[xsc->sc_rx_handled_idx]; 426 1.5.2.2 jdolecek m = xsc->sc_rx_mb_head[xsc->sc_rx_handled_idx]; 427 1.5.2.2 jdolecek 428 1.5.2.2 jdolecek m->m_len = map->dm_xfer_len; 429 1.5.2.2 jdolecek 430 1.5.2.2 jdolecek bus_dmamap_sync(xsc->sc_rxdma->sc_dmat, map, 431 1.5.2.2 jdolecek 0, map->dm_mapsize, BUS_DMASYNC_POSTREAD); 432 1.5.2.2 jdolecek 433 1.5.2.2 jdolecek bus_dmamap_unload(xsc->sc_rxdma->sc_dmat, map); 434 1.5.2.2 jdolecek 435 1.5.2.2 jdolecek /* Install a fresh mbuf for next packet */ 436 1.5.2.2 jdolecek 437 1.5.2.2 jdolecek xsc->sc_rx_mb_head[xsc->sc_rx_handled_idx] = 438 1.5.2.2 jdolecek xe_dma_rxmap_load(sc,map); 439 1.5.2.2 jdolecek 440 1.5.2.2 jdolecek /* Punt runt packets 441 1.5.2.2 jdolecek * dma restarts create 0 length packets for example 442 1.5.2.2 jdolecek */ 443 1.5.2.2 jdolecek if (m->m_len < ETHER_MIN_LEN) { 444 1.5.2.2 jdolecek m_freem(m); 445 1.5.2.2 jdolecek m = NULL; 446 1.5.2.2 jdolecek } 447 1.5.2.2 jdolecek } 448 1.5.2.2 jdolecek return (m); 449 1.5.2.2 jdolecek } 450 1.5.2.2 jdolecek 451 1.5.2.2 jdolecek void 452 1.5.2.2 jdolecek xe_dma_tx_setup (sc) 453 1.5.2.2 jdolecek struct mb8795_softc *sc; 454 1.1 dbj { 455 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 456 1.5.2.2 jdolecek 457 1.5.2.2 jdolecek DPRINTF(("xe dma tx setup\n")); 458 1.5.2.2 jdolecek 459 1.5.2.2 jdolecek nextdma_init(xsc->sc_txdma); 460 1.5.2.2 jdolecek } 461 1.5.2.2 jdolecek 462 1.5.2.2 jdolecek void 463 1.5.2.2 jdolecek xe_dma_tx_go (sc) 464 1.5.2.2 jdolecek struct mb8795_softc *sc; 465 1.5.2.2 jdolecek { 466 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 467 1.5.2.2 jdolecek 468 1.5.2.2 jdolecek DPRINTF(("xe dma tx go\n")); 469 1.5.2.2 jdolecek 470 1.5.2.2 jdolecek nextdma_start(xsc->sc_txdma, DMACSR_SETWRITE); 471 1.5.2.2 jdolecek } 472 1.5.2.2 jdolecek 473 1.5.2.2 jdolecek int 474 1.5.2.2 jdolecek xe_dma_tx_mbuf (sc, m) 475 1.5.2.2 jdolecek struct mb8795_softc *sc; 476 1.5.2.2 jdolecek struct mbuf *m; 477 1.5.2.2 jdolecek { 478 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 479 1.5.2.2 jdolecek int error; 480 1.5.2.2 jdolecek 481 1.5.2.2 jdolecek xsc->sc_tx_mb_head = m; 482 1.5.2.2 jdolecek 483 1.5.2.2 jdolecek /* The following is a next specific hack that should 484 1.5.2.2 jdolecek * probably be moved out of MI code. 485 1.5.2.2 jdolecek * This macro assumes it can move forward as needed 486 1.5.2.2 jdolecek * in the buffer. Perhaps it should zero the extra buffer. 487 1.5.2.2 jdolecek */ 488 1.5.2.2 jdolecek #define REALIGN_DMABUF(s,l) \ 489 1.5.2.2 jdolecek { (s) = ((u_char *)(((unsigned)(s)+DMA_BEGINALIGNMENT-1) \ 490 1.5.2.2 jdolecek &~(DMA_BEGINALIGNMENT-1))); \ 491 1.5.2.2 jdolecek (l) = ((u_char *)(((unsigned)((s)+(l))+DMA_ENDALIGNMENT-1) \ 492 1.5.2.2 jdolecek &~(DMA_ENDALIGNMENT-1)))-(s);} 493 1.5.2.2 jdolecek 494 1.5.2.2 jdolecek #if 0 495 1.5.2.2 jdolecek error = bus_dmamap_load_mbuf(xsc->sc_txdma->sc_dmat, 496 1.5.2.2 jdolecek xsc->sc_tx_dmamap, xsc->sc_tx_mb_head, BUS_DMA_NOWAIT); 497 1.5.2.2 jdolecek #else 498 1.5.2.2 jdolecek { 499 1.5.2.2 jdolecek u_char *buf = xsc->sc_txbuf; 500 1.5.2.2 jdolecek int buflen = 0; 501 1.5.2.2 jdolecek 502 1.5.2.2 jdolecek buflen = m->m_pkthdr.len; 503 1.5.2.2 jdolecek 504 1.5.2.2 jdolecek /* Fix runt packets, @@@ memory overrun */ 505 1.5.2.2 jdolecek if (buflen < ETHERMIN+sizeof(struct ether_header)) { 506 1.5.2.2 jdolecek buflen = ETHERMIN+sizeof(struct ether_header); 507 1.5.2.2 jdolecek } 508 1.5.2.2 jdolecek 509 1.5.2.2 jdolecek { 510 1.5.2.2 jdolecek u_char *p = buf; 511 1.5.2.2 jdolecek for (m=xsc->sc_tx_mb_head; m; m = m->m_next) { 512 1.5.2.2 jdolecek if (m->m_len == 0) continue; 513 1.5.2.2 jdolecek bcopy(mtod(m, u_char *), p, m->m_len); 514 1.5.2.2 jdolecek p += m->m_len; 515 1.5.2.2 jdolecek } 516 1.5.2.2 jdolecek } 517 1.5.2.2 jdolecek 518 1.5.2.2 jdolecek error = bus_dmamap_load(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap, 519 1.5.2.2 jdolecek buf,buflen,NULL,BUS_DMA_NOWAIT); 520 1.5.2.2 jdolecek } 521 1.5.2.2 jdolecek #endif 522 1.5.2.2 jdolecek if (error) { 523 1.5.2.2 jdolecek printf("%s: can't load mbuf chain, error = %d\n", 524 1.5.2.2 jdolecek sc->sc_dev.dv_xname, error); 525 1.5.2.2 jdolecek m_freem(xsc->sc_tx_mb_head); 526 1.5.2.2 jdolecek xsc->sc_tx_mb_head = NULL; 527 1.5.2.2 jdolecek return (error); 528 1.5.2.2 jdolecek } 529 1.5.2.2 jdolecek 530 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 531 1.5.2.2 jdolecek if (xsc->sc_tx_loaded != 0) { 532 1.5.2.2 jdolecek panic("%s: xsc->sc_tx_loaded is %d",sc->sc_dev.dv_xname, 533 1.5.2.2 jdolecek xsc->sc_tx_loaded); 534 1.5.2.2 jdolecek } 535 1.5.2.2 jdolecek #endif 536 1.5.2.2 jdolecek 537 1.5.2.2 jdolecek bus_dmamap_sync(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap, 0, 538 1.5.2.2 jdolecek xsc->sc_tx_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); 539 1.5.2.2 jdolecek 540 1.5.2.2 jdolecek return (0); 541 1.5.2.2 jdolecek } 542 1.5.2.2 jdolecek 543 1.5.2.2 jdolecek int 544 1.5.2.2 jdolecek xe_dma_tx_isactive (sc) 545 1.5.2.2 jdolecek struct mb8795_softc *sc; 546 1.5.2.2 jdolecek { 547 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 548 1.5.2.2 jdolecek 549 1.5.2.2 jdolecek return (xsc->sc_tx_loaded != 0); 550 1.5.2.2 jdolecek } 551 1.5.2.2 jdolecek 552 1.5.2.2 jdolecek /****************************************************************/ 553 1.5.2.2 jdolecek 554 1.5.2.2 jdolecek void 555 1.5.2.2 jdolecek xe_dma_tx_completed(map, arg) 556 1.5.2.2 jdolecek bus_dmamap_t map; 557 1.5.2.2 jdolecek void *arg; 558 1.5.2.2 jdolecek { 559 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 560 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 561 1.5.2.2 jdolecek 562 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_tx_completed()\n",sc->sc_dev.dv_xname)); 563 1.5.2.2 jdolecek 564 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 565 1.5.2.2 jdolecek if (!xsc->sc_tx_loaded) { 566 1.5.2.2 jdolecek panic("%s: tx completed never loaded",sc->sc_dev.dv_xname); 567 1.5.2.2 jdolecek } 568 1.5.2.2 jdolecek if (map != xsc->sc_tx_dmamap) { 569 1.5.2.2 jdolecek panic("%s: unexpected tx completed map",sc->sc_dev.dv_xname); 570 1.5.2.2 jdolecek } 571 1.5.2.2 jdolecek 572 1.5.2.2 jdolecek #endif 573 1.5.2.2 jdolecek } 574 1.5.2.2 jdolecek 575 1.5.2.2 jdolecek void 576 1.5.2.2 jdolecek xe_dma_tx_shutdown(arg) 577 1.5.2.2 jdolecek void *arg; 578 1.5.2.2 jdolecek { 579 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 580 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 581 1.5.2.2 jdolecek struct ifnet *ifp = &sc->sc_ethercom.ec_if; 582 1.5.2.2 jdolecek 583 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_tx_shutdown()\n",sc->sc_dev.dv_xname)); 584 1.5.2.2 jdolecek 585 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 586 1.5.2.2 jdolecek if (!xsc->sc_tx_loaded) { 587 1.5.2.2 jdolecek panic("%s: tx shutdown never loaded",sc->sc_dev.dv_xname); 588 1.5.2.2 jdolecek } 589 1.5.2.2 jdolecek #endif 590 1.5.2.2 jdolecek 591 1.5.2.2 jdolecek if (turbo) 592 1.5.2.2 jdolecek MB_WRITE_REG(sc, MB8795_TXMODE, MB8795_TXMODE_TURBO1); 593 1.5.2.2 jdolecek if (xsc->sc_tx_loaded) { 594 1.5.2.2 jdolecek bus_dmamap_sync(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap, 595 1.5.2.2 jdolecek 0, xsc->sc_tx_dmamap->dm_mapsize, 596 1.5.2.2 jdolecek BUS_DMASYNC_POSTWRITE); 597 1.5.2.2 jdolecek bus_dmamap_unload(xsc->sc_txdma->sc_dmat, xsc->sc_tx_dmamap); 598 1.5.2.2 jdolecek m_freem(xsc->sc_tx_mb_head); 599 1.5.2.2 jdolecek xsc->sc_tx_mb_head = NULL; 600 1.5.2.2 jdolecek 601 1.5.2.2 jdolecek xsc->sc_tx_loaded--; 602 1.5.2.2 jdolecek } 603 1.5.2.2 jdolecek 604 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 605 1.5.2.2 jdolecek if (xsc->sc_tx_loaded != 0) { 606 1.5.2.2 jdolecek panic("%s: sc->sc_tx_loaded is %d",sc->sc_dev.dv_xname, 607 1.5.2.2 jdolecek xsc->sc_tx_loaded); 608 1.5.2.2 jdolecek } 609 1.5.2.2 jdolecek #endif 610 1.5.2.2 jdolecek 611 1.5.2.2 jdolecek ifp->if_timer = 0; 612 1.5.2.2 jdolecek 613 1.5.2.2 jdolecek #if 1 614 1.5.2.2 jdolecek if ((ifp->if_flags & IFF_RUNNING) && !IF_IS_EMPTY(&sc->sc_tx_snd)) { 615 1.5.2.2 jdolecek void mb8795_start_dma __P((struct mb8795_softc *)); /* XXXX */ 616 1.5.2.2 jdolecek mb8795_start_dma(sc); 617 1.5.2.2 jdolecek } 618 1.5.2.2 jdolecek #endif 619 1.5.2.2 jdolecek 620 1.5.2.2 jdolecek #if 0 621 1.5.2.2 jdolecek /* Enable ready interrupt */ 622 1.5.2.2 jdolecek MB_WRITE_REG(sc, MB8795_TXMASK, 623 1.5.2.2 jdolecek MB_READ_REG(sc, MB8795_TXMASK) 624 1.5.2.2 jdolecek | MB8795_TXMASK_TXRXIE/* READYIE */); 625 1.5.2.2 jdolecek #endif 626 1.5.2.2 jdolecek } 627 1.5.2.2 jdolecek 628 1.5.2.2 jdolecek 629 1.5.2.2 jdolecek void 630 1.5.2.2 jdolecek xe_dma_rx_completed(map, arg) 631 1.5.2.2 jdolecek bus_dmamap_t map; 632 1.5.2.2 jdolecek void *arg; 633 1.5.2.2 jdolecek { 634 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 635 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 636 1.5.2.2 jdolecek struct ifnet *ifp = &sc->sc_ethercom.ec_if; 637 1.5.2.2 jdolecek 638 1.5.2.2 jdolecek if (ifp->if_flags & IFF_RUNNING) { 639 1.5.2.2 jdolecek xsc->sc_rx_completed_idx++; 640 1.5.2.2 jdolecek xsc->sc_rx_completed_idx %= MB8795_NRXBUFS; 641 1.5.2.2 jdolecek 642 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_rx_completed(), sc->sc_rx_completed_idx = %d\n", 643 1.5.2.2 jdolecek sc->sc_dev.dv_xname, xsc->sc_rx_completed_idx)); 644 1.5.2.2 jdolecek 645 1.5.2.2 jdolecek #if (defined(DIAGNOSTIC)) 646 1.5.2.2 jdolecek if (map != xsc->sc_rx_dmamap[xsc->sc_rx_completed_idx]) { 647 1.5.2.2 jdolecek panic("%s: Unexpected rx dmamap completed", 648 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 649 1.5.2.2 jdolecek } 650 1.5.2.2 jdolecek #endif 651 1.5.2.2 jdolecek } 652 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 653 1.5.2.2 jdolecek else 654 1.5.2.2 jdolecek DPRINTF(("%s: Unexpected rx dmamap completed while if not running\n", 655 1.5.2.2 jdolecek sc->sc_dev.dv_xname)); 656 1.5.2.2 jdolecek #endif 657 1.5.2.2 jdolecek } 658 1.5.2.2 jdolecek 659 1.5.2.2 jdolecek void 660 1.5.2.2 jdolecek xe_dma_rx_shutdown(arg) 661 1.5.2.2 jdolecek void *arg; 662 1.5.2.2 jdolecek { 663 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 664 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 665 1.5.2.2 jdolecek struct ifnet *ifp = &sc->sc_ethercom.ec_if; 666 1.5.2.2 jdolecek 667 1.5.2.2 jdolecek if (ifp->if_flags & IFF_RUNNING) { 668 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_rx_shutdown(), restarting.\n", 669 1.5.2.2 jdolecek sc->sc_dev.dv_xname)); 670 1.5.2.2 jdolecek 671 1.5.2.2 jdolecek nextdma_start(xsc->sc_rxdma, DMACSR_SETREAD); 672 1.5.2.2 jdolecek if (turbo) 673 1.5.2.2 jdolecek MB_WRITE_REG(sc, MB8795_RXMODE, MB8795_RXMODE_TEST | MB8795_RXMODE_MULTICAST); 674 1.5.2.2 jdolecek } 675 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 676 1.5.2.2 jdolecek else 677 1.5.2.2 jdolecek DPRINTF(("%s: Unexpected rx dma shutdown while if not running\n", 678 1.5.2.2 jdolecek sc->sc_dev.dv_xname)); 679 1.5.2.2 jdolecek #endif 680 1.5.2.2 jdolecek } 681 1.5.2.2 jdolecek 682 1.5.2.2 jdolecek /* 683 1.5.2.2 jdolecek * load a dmamap with a freshly allocated mbuf 684 1.5.2.2 jdolecek */ 685 1.5.2.2 jdolecek struct mbuf * 686 1.5.2.2 jdolecek xe_dma_rxmap_load(sc,map) 687 1.5.2.2 jdolecek struct mb8795_softc *sc; 688 1.5.2.2 jdolecek bus_dmamap_t map; 689 1.5.2.2 jdolecek { 690 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 691 1.5.2.2 jdolecek struct ifnet *ifp = &sc->sc_ethercom.ec_if; 692 1.5.2.2 jdolecek struct mbuf *m; 693 1.5.2.2 jdolecek int error; 694 1.5.2.2 jdolecek 695 1.5.2.2 jdolecek MGETHDR(m, M_DONTWAIT, MT_DATA); 696 1.5.2.2 jdolecek if (m) { 697 1.5.2.2 jdolecek MCLGET(m, M_DONTWAIT); 698 1.5.2.2 jdolecek if ((m->m_flags & M_EXT) == 0) { 699 1.5.2.2 jdolecek m_freem(m); 700 1.5.2.2 jdolecek m = NULL; 701 1.5.2.2 jdolecek } else { 702 1.5.2.2 jdolecek m->m_len = MCLBYTES; 703 1.5.2.2 jdolecek } 704 1.5.2.2 jdolecek } 705 1.5.2.2 jdolecek if (!m) { 706 1.5.2.2 jdolecek /* @@@ Handle this gracefully by reusing a scratch buffer 707 1.5.2.2 jdolecek * or something. 708 1.5.2.2 jdolecek */ 709 1.5.2.2 jdolecek panic("Unable to get memory for incoming ethernet"); 710 1.5.2.2 jdolecek } 711 1.5.2.2 jdolecek 712 1.5.2.2 jdolecek /* Align buffer, @@@ next specific. 713 1.5.2.2 jdolecek * perhaps should be using M_ALIGN here instead? 714 1.5.2.2 jdolecek * First we give us a little room to align with. 715 1.5.2.2 jdolecek */ 716 1.5.2.2 jdolecek { 717 1.5.2.2 jdolecek u_char *buf = m->m_data; 718 1.5.2.2 jdolecek int buflen = m->m_len; 719 1.5.2.2 jdolecek buflen -= DMA_ENDALIGNMENT+DMA_BEGINALIGNMENT; 720 1.5.2.2 jdolecek REALIGN_DMABUF(buf, buflen); 721 1.5.2.2 jdolecek m->m_data = buf; 722 1.5.2.2 jdolecek m->m_len = buflen; 723 1.5.2.2 jdolecek } 724 1.5.2.2 jdolecek 725 1.5.2.2 jdolecek m->m_pkthdr.rcvif = ifp; 726 1.5.2.2 jdolecek m->m_pkthdr.len = m->m_len; 727 1.5.2.2 jdolecek 728 1.5.2.2 jdolecek error = bus_dmamap_load_mbuf(xsc->sc_rxdma->sc_dmat, 729 1.5.2.2 jdolecek map, m, BUS_DMA_NOWAIT); 730 1.5.2.2 jdolecek 731 1.5.2.2 jdolecek bus_dmamap_sync(xsc->sc_rxdma->sc_dmat, map, 0, 732 1.5.2.2 jdolecek map->dm_mapsize, BUS_DMASYNC_PREREAD); 733 1.5.2.2 jdolecek 734 1.5.2.2 jdolecek if (error) { 735 1.5.2.2 jdolecek DPRINTF(("DEBUG: m->m_data = %p, m->m_len = %d\n", 736 1.5.2.2 jdolecek m->m_data, m->m_len)); 737 1.5.2.2 jdolecek DPRINTF(("DEBUG: MCLBYTES = %d, map->_dm_size = %ld\n", 738 1.5.2.2 jdolecek MCLBYTES, map->_dm_size)); 739 1.5.2.2 jdolecek 740 1.5.2.2 jdolecek panic("%s: can't load rx mbuf chain, error = %d", 741 1.5.2.2 jdolecek sc->sc_dev.dv_xname, error); 742 1.5.2.2 jdolecek m_freem(m); 743 1.5.2.2 jdolecek m = NULL; 744 1.5.2.2 jdolecek } 745 1.5.2.2 jdolecek 746 1.5.2.2 jdolecek return(m); 747 1.5.2.2 jdolecek } 748 1.5.2.2 jdolecek 749 1.5.2.2 jdolecek bus_dmamap_t 750 1.5.2.2 jdolecek xe_dma_rx_continue(arg) 751 1.5.2.2 jdolecek void *arg; 752 1.5.2.2 jdolecek { 753 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 754 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 755 1.5.2.2 jdolecek struct ifnet *ifp = &sc->sc_ethercom.ec_if; 756 1.5.2.2 jdolecek bus_dmamap_t map = NULL; 757 1.5.2.2 jdolecek 758 1.5.2.2 jdolecek if (ifp->if_flags & IFF_RUNNING) { 759 1.5.2.2 jdolecek if (((xsc->sc_rx_loaded_idx+1)%MB8795_NRXBUFS) == xsc->sc_rx_handled_idx) { 760 1.5.2.2 jdolecek /* make space for one packet by dropping one */ 761 1.5.2.2 jdolecek struct mbuf *m; 762 1.5.2.2 jdolecek m = xe_dma_rx_mbuf (sc); 763 1.5.2.2 jdolecek if (m) 764 1.5.2.2 jdolecek m_freem(m); 765 1.5.2.2 jdolecek #if (defined(DIAGNOSTIC)) 766 1.5.2.2 jdolecek DPRINTF(("%s: out of receive DMA buffers\n",sc->sc_dev.dv_xname)); 767 1.5.2.2 jdolecek #endif 768 1.5.2.2 jdolecek } 769 1.5.2.2 jdolecek xsc->sc_rx_loaded_idx++; 770 1.5.2.2 jdolecek xsc->sc_rx_loaded_idx %= MB8795_NRXBUFS; 771 1.5.2.2 jdolecek map = xsc->sc_rx_dmamap[xsc->sc_rx_loaded_idx]; 772 1.5.2.2 jdolecek 773 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_rx_continue() xsc->sc_rx_loaded_idx = %d\nn", 774 1.5.2.2 jdolecek sc->sc_dev.dv_xname,xsc->sc_rx_loaded_idx)); 775 1.5.2.2 jdolecek } 776 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 777 1.5.2.2 jdolecek else 778 1.5.2.2 jdolecek panic("%s: Unexpected rx dma continue while if not running", 779 1.5.2.2 jdolecek sc->sc_dev.dv_xname); 780 1.5.2.2 jdolecek #endif 781 1.5.2.2 jdolecek 782 1.5.2.2 jdolecek return(map); 783 1.5.2.2 jdolecek } 784 1.5.2.2 jdolecek 785 1.5.2.2 jdolecek bus_dmamap_t 786 1.5.2.2 jdolecek xe_dma_tx_continue(arg) 787 1.5.2.2 jdolecek void *arg; 788 1.5.2.2 jdolecek { 789 1.5.2.2 jdolecek struct mb8795_softc *sc = arg; 790 1.5.2.2 jdolecek struct xe_softc *xsc = (struct xe_softc *)sc; 791 1.5.2.2 jdolecek bus_dmamap_t map; 792 1.5.2.2 jdolecek 793 1.5.2.2 jdolecek DPRINTF(("%s: xe_dma_tx_continue()\n",sc->sc_dev.dv_xname)); 794 1.5.2.2 jdolecek 795 1.5.2.2 jdolecek if (xsc->sc_tx_loaded) { 796 1.5.2.2 jdolecek map = NULL; 797 1.5.2.2 jdolecek } else { 798 1.5.2.2 jdolecek map = xsc->sc_tx_dmamap; 799 1.5.2.2 jdolecek xsc->sc_tx_loaded++; 800 1.5.2.2 jdolecek } 801 1.5.2.2 jdolecek 802 1.5.2.2 jdolecek #ifdef DIAGNOSTIC 803 1.5.2.2 jdolecek if (xsc->sc_tx_loaded != 1) { 804 1.5.2.2 jdolecek panic("%s: sc->sc_tx_loaded is %d",sc->sc_dev.dv_xname, 805 1.5.2.2 jdolecek xsc->sc_tx_loaded); 806 1.5.2.2 jdolecek } 807 1.5.2.2 jdolecek #endif 808 1.5.2.2 jdolecek 809 1.5.2.2 jdolecek return(map); 810 1.1 dbj } 811
Indexes created Thu Oct 02 07:10:07 GMT 2025