mpt_pci.c revision 101704
1101704Smjacob/* $FreeBSD: head/sys/dev/mpt/mpt_pci.c 101704 2002-08-11 23:34:20Z mjacob $ */ 2101704Smjacob/* 3101704Smjacob * PCI specific probe and attach routines for LSI '909 FC adapters. 4101704Smjacob * FreeBSD Version. 5101704Smjacob * 6101704Smjacob * Copyright (c) 2000, 2001 by Greg Ansley 7101704Smjacob * Partially derived from Matt Jacob's ISP driver. 8101704Smjacob * 9101704Smjacob * Redistribution and use in source and binary forms, with or without 10101704Smjacob * modification, are permitted provided that the following conditions 11101704Smjacob * are met: 12101704Smjacob * 1. Redistributions of source code must retain the above copyright 13101704Smjacob * notice immediately at the beginning of the file, without modification, 14101704Smjacob * this list of conditions, and the following disclaimer. 15101704Smjacob * 2. The name of the author may not be used to endorse or promote products 16101704Smjacob * derived from this software without specific prior written permission. 17101704Smjacob * 18101704Smjacob * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19101704Smjacob * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20101704Smjacob * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21101704Smjacob * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR 22101704Smjacob * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23101704Smjacob * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24101704Smjacob * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25101704Smjacob * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26101704Smjacob * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27101704Smjacob * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28101704Smjacob * SUCH DAMAGE. 29101704Smjacob */ 30101704Smjacob/* 31101704Smjacob * Additional Copyright (c) 2002 by Matthew Jacob under same license. 32101704Smjacob */ 33101704Smjacob 34101704Smjacob#include <sys/param.h> 35101704Smjacob#include <sys/systm.h> 36101704Smjacob#include <sys/kernel.h> 37101704Smjacob#include <sys/bus.h> 38101704Smjacob#include <sys/conf.h> 39101704Smjacob#include <sys/malloc.h> 40101704Smjacob#include <sys/mbuf.h> 41101704Smjacob#include <sys/module.h> 42101704Smjacob#include <pci/pcireg.h> 43101704Smjacob#include <pci/pcivar.h> 44101704Smjacob 45101704Smjacob#include <machine/bus_memio.h> 46101704Smjacob#include <machine/bus_pio.h> 47101704Smjacob#include <machine/bus.h> 48101704Smjacob#include <machine/resource.h> 49101704Smjacob#include <sys/rman.h> 50101704Smjacob 51101704Smjacob#include <dev/mpt/mpt.h> 52101704Smjacob#include <dev/mpt/mpt_freebsd.h> 53101704Smjacob 54101704Smjacob#ifndef PCI_VENDOR_LSI 55101704Smjacob#define PCI_VENDOR_LSI 0x1000 56101704Smjacob#endif 57101704Smjacob 58101704Smjacob#ifndef PCI_PRODUCT_LSI_FC909 59101704Smjacob#define PCI_PRODUCT_LSI_FC909 0x0620 60101704Smjacob#endif 61101704Smjacob 62101704Smjacob#ifndef PCI_PRODUCT_LSI_FC929 63101704Smjacob#define PCI_PRODUCT_LSI_FC929 0x0622 64101704Smjacob#endif 65101704Smjacob 66101704Smjacob#ifndef PCI_PRODUCT_LSI_1030 67101704Smjacob#define PCI_PRODUCT_LSI_1030 0x0030 68101704Smjacob#endif 69101704Smjacob 70101704Smjacob 71101704Smjacob 72101704Smjacob#define MEM_MAP_REG 0x14 73101704Smjacob#define MEM_MAP_SRAM 0x1C 74101704Smjacob 75101704Smjacobstatic int mpt_probe(device_t); 76101704Smjacobstatic int mpt_attach(device_t); 77101704Smjacobstatic void mpt_free_bus_resources(struct mpt_softc *mpt); 78101704Smjacobstatic int mpt_detach(device_t); 79101704Smjacobstatic int mpt_shutdown(device_t); 80101704Smjacobstatic int mpt_dma_mem_alloc(struct mpt_softc *mpt); 81101704Smjacobstatic void mpt_dma_mem_free(struct mpt_softc *mpt); 82101704Smjacobstatic void mpt_read_config_regs(struct mpt_softc *mpt); 83101704Smjacob 84101704Smjacobstatic device_method_t mpt_methods[] = { 85101704Smjacob /* Device interface */ 86101704Smjacob DEVMETHOD(device_probe, mpt_probe), 87101704Smjacob DEVMETHOD(device_attach, mpt_attach), 88101704Smjacob DEVMETHOD(device_detach, mpt_detach), 89101704Smjacob DEVMETHOD(device_shutdown, mpt_shutdown), 90101704Smjacob { 0, 0 } 91101704Smjacob}; 92101704Smjacob 93101704Smjacobstatic driver_t mpt_driver = { 94101704Smjacob "mpt", mpt_methods, sizeof (struct mpt_softc) 95101704Smjacob}; 96101704Smjacobstatic devclass_t mpt_devclass; 97101704SmjacobDRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0); 98101704SmjacobMODULE_VERSION(mpt, 1); 99101704Smjacob 100101704Smjacobint 101101704Smjacobmpt_intr(void *dummy) 102101704Smjacob{ 103101704Smjacob u_int32_t reply; 104101704Smjacob struct mpt_softc *mpt = (struct mpt_softc *)dummy; 105101704Smjacob 106101704Smjacob reply = mpt_pop_reply_queue(mpt); 107101704Smjacob while (reply != MPT_REPLY_EMPTY) { 108101704Smjacob if (mpt->verbose > 1) { 109101704Smjacob if ((reply & MPT_CONTEXT_REPLY) != 0) { 110101704Smjacob /* Address reply; IOC has something to say */ 111101704Smjacob mpt_print_reply(MPT_REPLY_PTOV(mpt, reply)); 112101704Smjacob } else { 113101704Smjacob /* Context reply ; all went well */ 114101704Smjacob device_printf(mpt->dev, 115101704Smjacob "context %u reply OK\n", reply); 116101704Smjacob } 117101704Smjacob } 118101704Smjacob mpt_done(mpt, reply); 119101704Smjacob reply = mpt_pop_reply_queue(mpt); 120101704Smjacob } 121101704Smjacob return 0; 122101704Smjacob} 123101704Smjacob 124101704Smjacobstatic int 125101704Smjacobmpt_probe(device_t dev) 126101704Smjacob{ 127101704Smjacob char *desc; 128101704Smjacob 129101704Smjacob if (pci_get_vendor(dev) != PCI_VENDOR_LSI) 130101704Smjacob return (ENXIO); 131101704Smjacob 132101704Smjacob switch ((pci_get_device(dev) & ~1)) { 133101704Smjacob case PCI_PRODUCT_LSI_FC909: 134101704Smjacob desc = "LSILogic FC909 FC Adapter"; 135101704Smjacob break; 136101704Smjacob case PCI_PRODUCT_LSI_FC929: 137101704Smjacob desc = "LSILogic FC929 FC Adapter"; 138101704Smjacob break; 139101704Smjacob case PCI_PRODUCT_LSI_1030: 140101704Smjacob desc = "LSILogic 1030 Ultra4 Adapter"; 141101704Smjacob break; 142101704Smjacob default: 143101704Smjacob return (ENXIO); 144101704Smjacob } 145101704Smjacob 146101704Smjacob device_set_desc(dev, desc); 147101704Smjacob return (0); 148101704Smjacob} 149101704Smjacob 150101704Smjacob#ifdef RELENG_4 151101704Smjacobstatic void 152101704Smjacobmpt_set_options(struct mpt_softc *mpt) 153101704Smjacob{ 154101704Smjacob int bitmap; 155101704Smjacob 156101704Smjacob bitmap = 0; 157101704Smjacob if (getenv_int("mpt_disable", &bitmap)) { 158101704Smjacob if (bitmap & (1 << mpt->unit)) { 159101704Smjacob mpt->disabled = 1; 160101704Smjacob } 161101704Smjacob } 162101704Smjacob 163101704Smjacob bitmap = 0; 164101704Smjacob if (getenv_int("mpt_debug", &bitmap)) { 165101704Smjacob if (bitmap & (1 << mpt->unit)) { 166101704Smjacob mpt->verbose = 2; 167101704Smjacob } 168101704Smjacob } 169101704Smjacob 170101704Smjacob cmd = pci_read_config(dev, PCIR_COMMAND, 2); 171101704Smjacob} 172101704Smjacob#else 173101704Smjacobstatic void 174101704Smjacobmpt_set_options(struct mpt_softc *mpt) 175101704Smjacob{ 176101704Smjacob int tval; 177101704Smjacob 178101704Smjacob tval = 0; 179101704Smjacob if (resource_int_value(device_get_name(mpt->dev), 180101704Smjacob device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) { 181101704Smjacob mpt->disabled = 1; 182101704Smjacob } 183101704Smjacob tval = 0; 184101704Smjacob if (resource_int_value(device_get_name(mpt->dev), 185101704Smjacob device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) { 186101704Smjacob mpt->verbose += tval; 187101704Smjacob } 188101704Smjacob} 189101704Smjacob#endif 190101704Smjacob 191101704Smjacob 192101704Smjacobstatic int 193101704Smjacobmpt_attach(device_t dev) 194101704Smjacob{ 195101704Smjacob int iqd; 196101704Smjacob u_int32_t data, cmd; 197101704Smjacob struct mpt_softc *mpt; 198101704Smjacob 199101704Smjacob /* Allocate the softc structure */ 200101704Smjacob mpt = (struct mpt_softc*) device_get_softc(dev); 201101704Smjacob if (mpt == NULL) { 202101704Smjacob device_printf(dev, "cannot allocate softc\n"); 203101704Smjacob return (ENOMEM); 204101704Smjacob } 205101704Smjacob bzero(mpt, sizeof (struct mpt_softc)); 206101704Smjacob switch ((pci_get_device(dev) & ~1)) { 207101704Smjacob case PCI_PRODUCT_LSI_FC909: 208101704Smjacob case PCI_PRODUCT_LSI_FC929: 209101704Smjacob mpt->is_fc = 1; 210101704Smjacob break; 211101704Smjacob default: 212101704Smjacob break; 213101704Smjacob } 214101704Smjacob mpt->dev = dev; 215101704Smjacob mpt->unit = device_get_unit(dev); 216101704Smjacob mpt_set_options(mpt); 217101704Smjacob mpt->verbose += (bootverbose != 0)? 1 : 0; 218101704Smjacob 219101704Smjacob /* Make sure memory access decoders are enabled */ 220101704Smjacob cmd = pci_read_config(dev, PCIR_COMMAND, 2); 221101704Smjacob if ((cmd & PCIM_CMD_MEMEN) == 0) { 222101704Smjacob device_printf(dev, "Memory accesses disabled"); 223101704Smjacob goto bad; 224101704Smjacob } 225101704Smjacob 226101704Smjacob /* 227101704Smjacob * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set. 228101704Smjacob */ 229101704Smjacob cmd |= 230101704Smjacob PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN | 231101704Smjacob PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN; 232101704Smjacob pci_write_config(dev, PCIR_COMMAND, cmd, 2); 233101704Smjacob 234101704Smjacob /* 235101704Smjacob * Make sure we've disabled the ROM. 236101704Smjacob */ 237101704Smjacob data = pci_read_config(dev, PCIR_BIOS, 4); 238101704Smjacob data &= ~1; 239101704Smjacob pci_write_config(dev, PCIR_BIOS, data, 4); 240101704Smjacob 241101704Smjacob 242101704Smjacob /* Is this part a dual? */ 243101704Smjacob if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929) { 244101704Smjacob /* Yes; is the previous device the counterpart? */ 245101704Smjacob if (mpt->unit) { 246101704Smjacob mpt->mpt2 = (struct mpt_softc *) 247101704Smjacob devclass_get_softc(mpt_devclass, mpt->unit-1); 248101704Smjacob 249101704Smjacob if ((mpt->mpt2->mpt2 == NULL) 250101704Smjacob && (pci_get_vendor(mpt->mpt2->dev) == PCI_VENDOR_LSI) 251101704Smjacob && ((pci_get_device(mpt->mpt2->dev) & ~1) == PCI_PRODUCT_LSI_FC929) ) { 252101704Smjacob /* Yes */ 253101704Smjacob mpt->mpt2->mpt2 = mpt; 254101704Smjacob if (mpt->verbose) { 255101704Smjacob device_printf(dev, "Detected dual\n"); 256101704Smjacob } 257101704Smjacob } else { 258101704Smjacob /* Nope */ 259101704Smjacob mpt->mpt2 = NULL; 260101704Smjacob } 261101704Smjacob } 262101704Smjacob } 263101704Smjacob 264101704Smjacob /* Set up the memory regions */ 265101704Smjacob /* Allocate kernel virtual memory for the 9x9's Mem0 region */ 266101704Smjacob mpt->pci_reg_id = MEM_MAP_REG; 267101704Smjacob mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY, 268101704Smjacob &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE); 269101704Smjacob if (mpt->pci_reg == NULL) { 270101704Smjacob device_printf(dev, "unable to map any ports\n"); 271101704Smjacob goto bad; 272101704Smjacob } 273101704Smjacob mpt->pci_st = rman_get_bustag(mpt->pci_reg); 274101704Smjacob mpt->pci_sh = rman_get_bushandle(mpt->pci_reg); 275101704Smjacob /* Get the Physical Address */ 276101704Smjacob mpt->pci_pa = rman_get_start(mpt->pci_reg); 277101704Smjacob 278101704Smjacob /* Get a handle to the interrupt */ 279101704Smjacob iqd = 0; 280101704Smjacob mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0, 281101704Smjacob 1, RF_ACTIVE | RF_SHAREABLE); 282101704Smjacob if (mpt->pci_irq == NULL) { 283101704Smjacob device_printf(dev, "could not allocate interrupt\n"); 284101704Smjacob goto bad; 285101704Smjacob } 286101704Smjacob 287101704Smjacob /* Register the interrupt handler */ 288101704Smjacob if (bus_setup_intr(dev, mpt->pci_irq, 289101704Smjacob INTR_TYPE_CAM, (void (*)(void *))mpt_intr, 290101704Smjacob mpt, &mpt->ih)) { 291101704Smjacob device_printf(dev, "could not setup interrupt\n"); 292101704Smjacob goto bad; 293101704Smjacob } 294101704Smjacob 295101704Smjacob /* Disable interrupts at the part */ 296101704Smjacob mpt_disable_ints(mpt); 297101704Smjacob 298101704Smjacob /* Allocate dma memory */ 299101704Smjacob if (mpt_dma_mem_alloc(mpt)) { 300101704Smjacob device_printf(dev, "Could not allocate DMA memory\n"); 301101704Smjacob goto bad; 302101704Smjacob } 303101704Smjacob 304101704Smjacob /* Initialize character device */ 305101704Smjacob /* currently closed */ 306101704Smjacob mpt->open = 0; 307101704Smjacob 308101704Smjacob /* Save the PCI config register values */ 309101704Smjacob /* Hard resets are known to screw up the BAR for diagnostic 310101704Smjacob memory accesses (Mem1). */ 311101704Smjacob /* Using Mem1 is known to make the chip stop responding to 312101704Smjacob configuration space transfers, so we need to save it now */ 313101704Smjacob mpt_read_config_regs(mpt); 314101704Smjacob 315101704Smjacob /* Initialize the hardware */ 316101704Smjacob if (mpt->disabled == 0) { 317101704Smjacob if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) 318101704Smjacob goto bad; 319101704Smjacob 320101704Smjacob /* Attach to CAM */ 321101704Smjacob mpt_cam_attach(mpt); 322101704Smjacob } 323101704Smjacob 324101704Smjacob /* Done */ 325101704Smjacob return (0); 326101704Smjacob 327101704Smjacobbad: 328101704Smjacob mpt_dma_mem_free(mpt); 329101704Smjacob mpt_free_bus_resources(mpt); 330101704Smjacob 331101704Smjacob /* 332101704Smjacob * but return zero to preserve unit numbering 333101704Smjacob */ 334101704Smjacob return (0); 335101704Smjacob} 336101704Smjacob 337101704Smjacob/****************************************************************************** 338101704Smjacob * Free bus resources 339101704Smjacob */ 340101704Smjacobstatic void 341101704Smjacobmpt_free_bus_resources(struct mpt_softc *mpt) 342101704Smjacob{ 343101704Smjacob if (mpt->ih) { 344101704Smjacob bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih); 345101704Smjacob mpt->ih = 0; 346101704Smjacob } 347101704Smjacob 348101704Smjacob if (mpt->pci_irq) { 349101704Smjacob bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq); 350101704Smjacob mpt->pci_irq = 0; 351101704Smjacob } 352101704Smjacob 353101704Smjacob if (mpt->pci_reg) { 354101704Smjacob bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id, 355101704Smjacob mpt->pci_reg); 356101704Smjacob mpt->pci_reg = 0; 357101704Smjacob } 358101704Smjacob if (mpt->pci_mem) { 359101704Smjacob bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_mem_id, 360101704Smjacob mpt->pci_mem); 361101704Smjacob mpt->pci_mem = 0; 362101704Smjacob } 363101704Smjacob 364101704Smjacob} 365101704Smjacob 366101704Smjacob 367101704Smjacob/****************************************************************************** 368101704Smjacob * Disconnect ourselves from the system. 369101704Smjacob */ 370101704Smjacobstatic int 371101704Smjacobmpt_detach(device_t dev) 372101704Smjacob{ 373101704Smjacob struct mpt_softc *mpt; 374101704Smjacob mpt = (struct mpt_softc*) device_get_softc(dev); 375101704Smjacob 376101704Smjacob device_printf(mpt->dev,"mpt_detach!\n"); 377101704Smjacob 378101704Smjacob if (mpt) { 379101704Smjacob mpt_disable_ints(mpt); 380101704Smjacob mpt_cam_detach(mpt); 381101704Smjacob mpt_reset(mpt); 382101704Smjacob mpt_dma_mem_free(mpt); 383101704Smjacob mpt_free_bus_resources(mpt); 384101704Smjacob } 385101704Smjacob return(0); 386101704Smjacob} 387101704Smjacob 388101704Smjacob 389101704Smjacob/****************************************************************************** 390101704Smjacob * Disable the hardware 391101704Smjacob */ 392101704Smjacobstatic int 393101704Smjacobmpt_shutdown(device_t dev) 394101704Smjacob{ 395101704Smjacob struct mpt_softc *mpt; 396101704Smjacob mpt = (struct mpt_softc*) device_get_softc(dev); 397101704Smjacob 398101704Smjacob if (mpt) { 399101704Smjacob mpt_reset(mpt); 400101704Smjacob } 401101704Smjacob return(0); 402101704Smjacob} 403101704Smjacob 404101704Smjacob 405101704Smjacobstruct imush { 406101704Smjacob struct mpt_softc *mpt; 407101704Smjacob int error; 408101704Smjacob u_int32_t phys; 409101704Smjacob}; 410101704Smjacob 411101704Smjacobstatic void 412101704Smjacobmpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error) 413101704Smjacob{ 414101704Smjacob struct imush *imushp = (struct imush *) arg; 415101704Smjacob imushp->error = error; 416101704Smjacob imushp->phys = segs->ds_addr; 417101704Smjacob} 418101704Smjacob 419101704Smjacob 420101704Smjacobstatic int 421101704Smjacobmpt_dma_mem_alloc(struct mpt_softc *mpt) 422101704Smjacob{ 423101704Smjacob int i, error; 424101704Smjacob u_char *vptr; 425101704Smjacob u_int32_t pptr, end; 426101704Smjacob struct imush im; 427101704Smjacob device_t dev = mpt->dev; 428101704Smjacob 429101704Smjacob /* Check if we alreay have allocated the reply memory */ 430101704Smjacob if (mpt->reply_phys != NULL) 431101704Smjacob return 0; 432101704Smjacob 433101704Smjacob /* 434101704Smjacob * Create a dma tag for this device 435101704Smjacob * 436101704Smjacob * Align at page boundaries, limit to 32-bit addressing 437101704Smjacob * (The chip supports 64-bit addressing, but this driver doesn't) 438101704Smjacob */ 439101704Smjacob if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 440101704Smjacob BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 441101704Smjacob BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0, 442101704Smjacob &mpt->parent_dmat) != 0) { 443101704Smjacob device_printf(dev, "cannot create parent dma tag\n"); 444101704Smjacob return (1); 445101704Smjacob } 446101704Smjacob 447101704Smjacob /* Create a child tag for reply buffers */ 448101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 449101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 450101704Smjacob NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 451101704Smjacob &mpt->reply_dmat) != 0) { 452101704Smjacob device_printf(dev, "cannot create a dma tag for replies\n"); 453101704Smjacob return (1); 454101704Smjacob } 455101704Smjacob 456101704Smjacob /* Allocate some DMA accessable memory for replies */ 457101704Smjacob if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply, 458101704Smjacob BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) { 459101704Smjacob device_printf(dev, "cannot allocate %d bytes of reply memory\n", 460101704Smjacob PAGE_SIZE); 461101704Smjacob return (1); 462101704Smjacob } 463101704Smjacob 464101704Smjacob im.mpt = mpt; 465101704Smjacob im.error = 0; 466101704Smjacob 467101704Smjacob /* Load and lock it into "bus space" */ 468101704Smjacob bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply, 469101704Smjacob PAGE_SIZE, mpt_map_rquest, &im, 0); 470101704Smjacob 471101704Smjacob if (im.error) { 472101704Smjacob device_printf(dev, 473101704Smjacob "error %d loading dma map for DMA reply queue\n", im.error); 474101704Smjacob return (1); 475101704Smjacob } 476101704Smjacob mpt->reply_phys = im.phys; 477101704Smjacob 478101704Smjacob /* Create a child tag for data buffers */ 479101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 480101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 481101704Smjacob NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0, 482101704Smjacob &mpt->buffer_dmat) != 0) { 483101704Smjacob device_printf(dev, 484101704Smjacob "cannot create a dma tag for data buffers\n"); 485101704Smjacob return (1); 486101704Smjacob } 487101704Smjacob 488101704Smjacob /* Create a child tag for request buffers */ 489101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 490101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 491101704Smjacob NULL, NULL, MPT_REQ_MEM_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 492101704Smjacob &mpt->request_dmat) != 0) { 493101704Smjacob device_printf(dev, "cannot create a dma tag for requests\n"); 494101704Smjacob return (1); 495101704Smjacob } 496101704Smjacob 497101704Smjacob /* Allocate some DMA accessable memory for requests */ 498101704Smjacob if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request, 499101704Smjacob BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) { 500101704Smjacob device_printf(dev, 501101704Smjacob "cannot allocate %d bytes of request memory\n", 502101704Smjacob MPT_REQ_MEM_SIZE); 503101704Smjacob return (1); 504101704Smjacob } 505101704Smjacob 506101704Smjacob im.mpt = mpt; 507101704Smjacob im.error = 0; 508101704Smjacob 509101704Smjacob /* Load and lock it into "bus space" */ 510101704Smjacob bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request, 511101704Smjacob MPT_REQ_MEM_SIZE, mpt_map_rquest, &im, 0); 512101704Smjacob 513101704Smjacob if (im.error) { 514101704Smjacob device_printf(dev, 515101704Smjacob "error %d loading dma map for DMA request queue\n", 516101704Smjacob im.error); 517101704Smjacob return (1); 518101704Smjacob } 519101704Smjacob mpt->request_phys = im.phys; 520101704Smjacob 521101704Smjacob i = 0; 522101704Smjacob pptr = mpt->request_phys; 523101704Smjacob vptr = mpt->request; 524101704Smjacob end = pptr + MPT_REQ_MEM_SIZE; 525101704Smjacob while(pptr < end) { 526101704Smjacob request_t *req = &mpt->requests[i]; 527101704Smjacob req->index = i++; 528101704Smjacob 529101704Smjacob /* Store location of Request Data */ 530101704Smjacob req->req_pbuf = pptr; 531101704Smjacob req->req_vbuf = vptr; 532101704Smjacob 533101704Smjacob pptr += MPT_REQUEST_AREA; 534101704Smjacob vptr += MPT_REQUEST_AREA; 535101704Smjacob 536101704Smjacob req->sense_pbuf = (pptr - MPT_SENSE_SIZE); 537101704Smjacob req->sense_vbuf = (vptr - MPT_SENSE_SIZE); 538101704Smjacob 539101704Smjacob error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap); 540101704Smjacob if (error) { 541101704Smjacob device_printf(dev, 542101704Smjacob "error %d creating per-cmd DMA maps\n", error); 543101704Smjacob return (1); 544101704Smjacob } 545101704Smjacob } 546101704Smjacob return (0); 547101704Smjacob} 548101704Smjacob 549101704Smjacob 550101704Smjacob 551101704Smjacob/* Deallocate memory that was allocated by mpt_dma_mem_alloc 552101704Smjacob */ 553101704Smjacobstatic void 554101704Smjacobmpt_dma_mem_free(struct mpt_softc *mpt) 555101704Smjacob{ 556101704Smjacob int i; 557101704Smjacob 558101704Smjacob /* Make sure we aren't double destroying */ 559101704Smjacob if (mpt->reply_dmat == 0) { 560101704Smjacob if (mpt->verbose) 561101704Smjacob device_printf(mpt->dev,"Already released dma memory\n"); 562101704Smjacob return; 563101704Smjacob } 564101704Smjacob 565101704Smjacob for (i = 0; i < MPT_MAX_REQUESTS; i++) { 566101704Smjacob bus_dmamap_destroy(mpt->buffer_dmat, mpt->requests[i].dmap); 567101704Smjacob } 568101704Smjacob bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap); 569101704Smjacob bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap); 570101704Smjacob bus_dma_tag_destroy(mpt->request_dmat); 571101704Smjacob bus_dma_tag_destroy(mpt->buffer_dmat); 572101704Smjacob bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap); 573101704Smjacob bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap); 574101704Smjacob bus_dma_tag_destroy(mpt->reply_dmat); 575101704Smjacob bus_dma_tag_destroy(mpt->parent_dmat); 576101704Smjacob mpt->reply_dmat = 0; 577101704Smjacob 578101704Smjacob} 579101704Smjacob 580101704Smjacob 581101704Smjacob 582101704Smjacob/* Reads modifiable (via PCI transactions) config registers */ 583101704Smjacobstatic void 584101704Smjacobmpt_read_config_regs(struct mpt_softc *mpt) 585101704Smjacob{ 586101704Smjacob mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2); 587101704Smjacob mpt->pci_cfg.LatencyTimer_LineSize = 588101704Smjacob pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2); 589101704Smjacob mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4); 590101704Smjacob mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4); 591101704Smjacob mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4); 592101704Smjacob mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4); 593101704Smjacob mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4); 594101704Smjacob mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4); 595101704Smjacob mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1); 596101704Smjacob mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4); 597101704Smjacob} 598101704Smjacob 599101704Smjacob/* Sets modifiable config registers */ 600101704Smjacobvoid 601101704Smjacobmpt_set_config_regs(struct mpt_softc *mpt) 602101704Smjacob{ 603101704Smjacob u_int32_t val; 604101704Smjacob 605101704Smjacob#define MPT_CHECK(reg, offset, size) \ 606101704Smjacob val = pci_read_config(mpt->dev, offset, size); \ 607101704Smjacob if (mpt->pci_cfg.reg != val) { \ 608101704Smjacob device_printf(mpt->dev, \ 609101704Smjacob "Restoring " #reg " to 0x%X from 0x%X\n", \ 610101704Smjacob mpt->pci_cfg.reg, val); \ 611101704Smjacob } 612101704Smjacob 613101704Smjacob if (mpt->verbose) { 614101704Smjacob MPT_CHECK(Command, PCIR_COMMAND, 2); 615101704Smjacob MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2); 616101704Smjacob MPT_CHECK(IO_BAR, PCIR_MAPS, 4); 617101704Smjacob MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4); 618101704Smjacob MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4); 619101704Smjacob MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4); 620101704Smjacob MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4); 621101704Smjacob MPT_CHECK(ROM_BAR, PCIR_BIOS, 4); 622101704Smjacob MPT_CHECK(IntLine, PCIR_INTLINE, 1); 623101704Smjacob MPT_CHECK(PMCSR, 0x44, 4); 624101704Smjacob } 625101704Smjacob#undef MPT_CHECK 626101704Smjacob 627101704Smjacob pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2); 628101704Smjacob pci_write_config(mpt->dev, PCIR_CACHELNSZ, 629101704Smjacob mpt->pci_cfg.LatencyTimer_LineSize, 2); 630101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4); 631101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4); 632101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4); 633101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4); 634101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4); 635101704Smjacob pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4); 636101704Smjacob pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1); 637101704Smjacob pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4); 638101704Smjacob} 639