mpt_pci.c revision 102199
1101704Smjacob/* $FreeBSD: head/sys/dev/mpt/mpt_pci.c 102199 2002-08-20 23:04:08Z 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> 37102199Smjacob#include <sys/module.h> 38101704Smjacob#include <sys/bus.h> 39102199Smjacob 40101704Smjacob#include <pci/pcireg.h> 41101704Smjacob#include <pci/pcivar.h> 42101704Smjacob 43101704Smjacob#include <machine/bus_memio.h> 44101704Smjacob#include <machine/bus_pio.h> 45101704Smjacob#include <machine/bus.h> 46101704Smjacob#include <machine/resource.h> 47101704Smjacob#include <sys/rman.h> 48102199Smjacob#include <sys/malloc.h> 49101704Smjacob 50101704Smjacob#include <dev/mpt/mpt_freebsd.h> 51101704Smjacob 52101704Smjacob#ifndef PCI_VENDOR_LSI 53101704Smjacob#define PCI_VENDOR_LSI 0x1000 54101704Smjacob#endif 55101704Smjacob 56101704Smjacob#ifndef PCI_PRODUCT_LSI_FC909 57101704Smjacob#define PCI_PRODUCT_LSI_FC909 0x0620 58101704Smjacob#endif 59101704Smjacob 60101704Smjacob#ifndef PCI_PRODUCT_LSI_FC929 61101704Smjacob#define PCI_PRODUCT_LSI_FC929 0x0622 62101704Smjacob#endif 63101704Smjacob 64101704Smjacob#ifndef PCI_PRODUCT_LSI_1030 65101704Smjacob#define PCI_PRODUCT_LSI_1030 0x0030 66101704Smjacob#endif 67101704Smjacob 68101704Smjacob 69101704Smjacob 70101704Smjacob#define MEM_MAP_REG 0x14 71101704Smjacob#define MEM_MAP_SRAM 0x1C 72101704Smjacob 73101704Smjacobstatic int mpt_probe(device_t); 74101704Smjacobstatic int mpt_attach(device_t); 75102199Smjacobstatic void mpt_free_bus_resources(mpt_softc_t *mpt); 76101704Smjacobstatic int mpt_detach(device_t); 77101704Smjacobstatic int mpt_shutdown(device_t); 78102199Smjacobstatic int mpt_dma_mem_alloc(mpt_softc_t *mpt); 79102199Smjacobstatic void mpt_dma_mem_free(mpt_softc_t *mpt); 80102199Smjacobstatic void mpt_read_config_regs(mpt_softc_t *mpt); 81102199Smjacobstatic void mpt_pci_intr(void *); 82101704Smjacob 83101704Smjacobstatic device_method_t mpt_methods[] = { 84101704Smjacob /* Device interface */ 85101704Smjacob DEVMETHOD(device_probe, mpt_probe), 86101704Smjacob DEVMETHOD(device_attach, mpt_attach), 87101704Smjacob DEVMETHOD(device_detach, mpt_detach), 88101704Smjacob DEVMETHOD(device_shutdown, mpt_shutdown), 89101704Smjacob { 0, 0 } 90101704Smjacob}; 91101704Smjacob 92101704Smjacobstatic driver_t mpt_driver = { 93102199Smjacob "mpt", mpt_methods, sizeof (mpt_softc_t) 94101704Smjacob}; 95101704Smjacobstatic devclass_t mpt_devclass; 96101704SmjacobDRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0); 97101704SmjacobMODULE_VERSION(mpt, 1); 98101704Smjacob 99101704Smjacobint 100101704Smjacobmpt_intr(void *dummy) 101101704Smjacob{ 102101704Smjacob u_int32_t reply; 103102199Smjacob mpt_softc_t *mpt = (mpt_softc_t *)dummy; 104101704Smjacob 105101704Smjacob reply = mpt_pop_reply_queue(mpt); 106101704Smjacob while (reply != MPT_REPLY_EMPTY) { 107101704Smjacob if (mpt->verbose > 1) { 108101704Smjacob if ((reply & MPT_CONTEXT_REPLY) != 0) { 109101704Smjacob /* Address reply; IOC has something to say */ 110101704Smjacob mpt_print_reply(MPT_REPLY_PTOV(mpt, reply)); 111101704Smjacob } else { 112101704Smjacob /* Context reply ; all went well */ 113101704Smjacob device_printf(mpt->dev, 114101704Smjacob "context %u reply OK\n", reply); 115101704Smjacob } 116101704Smjacob } 117101704Smjacob mpt_done(mpt, reply); 118101704Smjacob reply = mpt_pop_reply_queue(mpt); 119101704Smjacob } 120101704Smjacob return 0; 121101704Smjacob} 122101704Smjacob 123101704Smjacobstatic int 124101704Smjacobmpt_probe(device_t dev) 125101704Smjacob{ 126101704Smjacob char *desc; 127101704Smjacob 128101704Smjacob if (pci_get_vendor(dev) != PCI_VENDOR_LSI) 129101704Smjacob return (ENXIO); 130101704Smjacob 131101704Smjacob switch ((pci_get_device(dev) & ~1)) { 132101704Smjacob case PCI_PRODUCT_LSI_FC909: 133101704Smjacob desc = "LSILogic FC909 FC Adapter"; 134101704Smjacob break; 135101704Smjacob case PCI_PRODUCT_LSI_FC929: 136101704Smjacob desc = "LSILogic FC929 FC Adapter"; 137101704Smjacob break; 138101704Smjacob case PCI_PRODUCT_LSI_1030: 139101704Smjacob desc = "LSILogic 1030 Ultra4 Adapter"; 140101704Smjacob break; 141101704Smjacob default: 142101704Smjacob return (ENXIO); 143101704Smjacob } 144101704Smjacob 145101704Smjacob device_set_desc(dev, desc); 146101704Smjacob return (0); 147101704Smjacob} 148101704Smjacob 149101704Smjacob#ifdef RELENG_4 150101704Smjacobstatic void 151102199Smjacobmpt_set_options(mpt_softc_t *mpt) 152101704Smjacob{ 153101704Smjacob int bitmap; 154101704Smjacob 155101704Smjacob bitmap = 0; 156101704Smjacob if (getenv_int("mpt_disable", &bitmap)) { 157101704Smjacob if (bitmap & (1 << mpt->unit)) { 158101704Smjacob mpt->disabled = 1; 159101704Smjacob } 160101704Smjacob } 161101704Smjacob 162101704Smjacob bitmap = 0; 163101704Smjacob if (getenv_int("mpt_debug", &bitmap)) { 164101704Smjacob if (bitmap & (1 << mpt->unit)) { 165101704Smjacob mpt->verbose = 2; 166101704Smjacob } 167101704Smjacob } 168101704Smjacob 169101704Smjacob cmd = pci_read_config(dev, PCIR_COMMAND, 2); 170101704Smjacob} 171101704Smjacob#else 172101704Smjacobstatic void 173102199Smjacobmpt_set_options(mpt_softc_t *mpt) 174101704Smjacob{ 175101704Smjacob int tval; 176101704Smjacob 177101704Smjacob tval = 0; 178101704Smjacob if (resource_int_value(device_get_name(mpt->dev), 179101704Smjacob device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) { 180101704Smjacob mpt->disabled = 1; 181101704Smjacob } 182101704Smjacob tval = 0; 183101704Smjacob if (resource_int_value(device_get_name(mpt->dev), 184101704Smjacob device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) { 185101704Smjacob mpt->verbose += tval; 186101704Smjacob } 187101704Smjacob} 188101704Smjacob#endif 189101704Smjacob 190101704Smjacob 191101704Smjacobstatic int 192101704Smjacobmpt_attach(device_t dev) 193101704Smjacob{ 194101704Smjacob int iqd; 195101704Smjacob u_int32_t data, cmd; 196102199Smjacob mpt_softc_t *mpt; 197101704Smjacob 198101704Smjacob /* Allocate the softc structure */ 199102199Smjacob mpt = (mpt_softc_t*) device_get_softc(dev); 200101704Smjacob if (mpt == NULL) { 201101704Smjacob device_printf(dev, "cannot allocate softc\n"); 202101704Smjacob return (ENOMEM); 203101704Smjacob } 204102199Smjacob bzero(mpt, sizeof (mpt_softc_t)); 205101704Smjacob switch ((pci_get_device(dev) & ~1)) { 206101704Smjacob case PCI_PRODUCT_LSI_FC909: 207101704Smjacob case PCI_PRODUCT_LSI_FC929: 208101704Smjacob mpt->is_fc = 1; 209101704Smjacob break; 210101704Smjacob default: 211101704Smjacob break; 212101704Smjacob } 213101704Smjacob mpt->dev = dev; 214101704Smjacob mpt->unit = device_get_unit(dev); 215101704Smjacob mpt_set_options(mpt); 216101704Smjacob mpt->verbose += (bootverbose != 0)? 1 : 0; 217101704Smjacob 218101704Smjacob /* Make sure memory access decoders are enabled */ 219101704Smjacob cmd = pci_read_config(dev, PCIR_COMMAND, 2); 220101704Smjacob if ((cmd & PCIM_CMD_MEMEN) == 0) { 221101704Smjacob device_printf(dev, "Memory accesses disabled"); 222101704Smjacob goto bad; 223101704Smjacob } 224101704Smjacob 225101704Smjacob /* 226101704Smjacob * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set. 227101704Smjacob */ 228101704Smjacob cmd |= 229101704Smjacob PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN | 230101704Smjacob PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN; 231101704Smjacob pci_write_config(dev, PCIR_COMMAND, cmd, 2); 232101704Smjacob 233101704Smjacob /* 234101704Smjacob * Make sure we've disabled the ROM. 235101704Smjacob */ 236101704Smjacob data = pci_read_config(dev, PCIR_BIOS, 4); 237101704Smjacob data &= ~1; 238101704Smjacob pci_write_config(dev, PCIR_BIOS, data, 4); 239101704Smjacob 240101704Smjacob 241101704Smjacob /* Is this part a dual? */ 242101704Smjacob if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929) { 243101704Smjacob /* Yes; is the previous device the counterpart? */ 244101704Smjacob if (mpt->unit) { 245102199Smjacob mpt->mpt2 = (mpt_softc_t *) 246101704Smjacob devclass_get_softc(mpt_devclass, mpt->unit-1); 247101704Smjacob 248101704Smjacob if ((mpt->mpt2->mpt2 == NULL) 249101704Smjacob && (pci_get_vendor(mpt->mpt2->dev) == PCI_VENDOR_LSI) 250101704Smjacob && ((pci_get_device(mpt->mpt2->dev) & ~1) == PCI_PRODUCT_LSI_FC929) ) { 251101704Smjacob /* Yes */ 252101704Smjacob mpt->mpt2->mpt2 = mpt; 253101704Smjacob if (mpt->verbose) { 254101704Smjacob device_printf(dev, "Detected dual\n"); 255101704Smjacob } 256101704Smjacob } else { 257101704Smjacob /* Nope */ 258101704Smjacob mpt->mpt2 = NULL; 259101704Smjacob } 260101704Smjacob } 261101704Smjacob } 262101704Smjacob 263101704Smjacob /* Set up the memory regions */ 264101704Smjacob /* Allocate kernel virtual memory for the 9x9's Mem0 region */ 265101704Smjacob mpt->pci_reg_id = MEM_MAP_REG; 266101704Smjacob mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY, 267101704Smjacob &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE); 268101704Smjacob if (mpt->pci_reg == NULL) { 269101704Smjacob device_printf(dev, "unable to map any ports\n"); 270101704Smjacob goto bad; 271101704Smjacob } 272101704Smjacob mpt->pci_st = rman_get_bustag(mpt->pci_reg); 273101704Smjacob mpt->pci_sh = rman_get_bushandle(mpt->pci_reg); 274101704Smjacob /* Get the Physical Address */ 275101704Smjacob mpt->pci_pa = rman_get_start(mpt->pci_reg); 276101704Smjacob 277101704Smjacob /* Get a handle to the interrupt */ 278101704Smjacob iqd = 0; 279101704Smjacob mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0, 280101704Smjacob 1, RF_ACTIVE | RF_SHAREABLE); 281101704Smjacob if (mpt->pci_irq == NULL) { 282101704Smjacob device_printf(dev, "could not allocate interrupt\n"); 283101704Smjacob goto bad; 284101704Smjacob } 285101704Smjacob 286101704Smjacob /* Register the interrupt handler */ 287102199Smjacob if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr, 288101704Smjacob mpt, &mpt->ih)) { 289101704Smjacob device_printf(dev, "could not setup interrupt\n"); 290101704Smjacob goto bad; 291101704Smjacob } 292101704Smjacob 293102199Smjacob MPT_LOCK_SETUP(mpt); 294102199Smjacob 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 304102199Smjacob /* 305102199Smjacob * Save the PCI config register values 306102199Smjacob * 307102199Smjacob * Hard resets are known to screw up the BAR for diagnostic 308102199Smjacob * memory accesses (Mem1). 309102199Smjacob * 310102199Smjacob * Using Mem1 is known to make the chip stop responding to 311102199Smjacob * configuration space transfers, so we need to save it now 312102199Smjacob */ 313101704Smjacob 314101704Smjacob mpt_read_config_regs(mpt); 315101704Smjacob 316101704Smjacob /* Initialize the hardware */ 317101704Smjacob if (mpt->disabled == 0) { 318102199Smjacob MPT_LOCK(mpt); 319102199Smjacob if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) { 320102199Smjacob MPT_UNLOCK(mpt); 321101704Smjacob goto bad; 322102199Smjacob } 323101704Smjacob 324102199Smjacob /* 325102199Smjacob * Attach to CAM 326102199Smjacob */ 327102199Smjacob MPTLOCK_2_CAMLOCK(mpt); 328101704Smjacob mpt_cam_attach(mpt); 329102199Smjacob CAMLOCK_2_MPTLOCK(mpt); 330102199Smjacob MPT_UNLOCK(mpt); 331101704Smjacob } 332101704Smjacob 333101704Smjacob return (0); 334101704Smjacob 335101704Smjacobbad: 336101704Smjacob mpt_dma_mem_free(mpt); 337101704Smjacob mpt_free_bus_resources(mpt); 338101704Smjacob 339101704Smjacob /* 340101704Smjacob * but return zero to preserve unit numbering 341101704Smjacob */ 342101704Smjacob return (0); 343101704Smjacob} 344101704Smjacob 345102199Smjacob/* 346101704Smjacob * Free bus resources 347101704Smjacob */ 348101704Smjacobstatic void 349102199Smjacobmpt_free_bus_resources(mpt_softc_t *mpt) 350101704Smjacob{ 351101704Smjacob if (mpt->ih) { 352101704Smjacob bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih); 353101704Smjacob mpt->ih = 0; 354101704Smjacob } 355101704Smjacob 356101704Smjacob if (mpt->pci_irq) { 357101704Smjacob bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq); 358101704Smjacob mpt->pci_irq = 0; 359101704Smjacob } 360101704Smjacob 361101704Smjacob if (mpt->pci_reg) { 362101704Smjacob bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id, 363101704Smjacob mpt->pci_reg); 364101704Smjacob mpt->pci_reg = 0; 365101704Smjacob } 366102199Smjacob MPT_LOCK_DESTROY(mpt); 367101704Smjacob} 368101704Smjacob 369101704Smjacob 370102199Smjacob/* 371101704Smjacob * Disconnect ourselves from the system. 372101704Smjacob */ 373101704Smjacobstatic int 374101704Smjacobmpt_detach(device_t dev) 375101704Smjacob{ 376102199Smjacob mpt_softc_t *mpt; 377102199Smjacob mpt = (mpt_softc_t*) device_get_softc(dev); 378101704Smjacob 379101704Smjacob device_printf(mpt->dev,"mpt_detach!\n"); 380101704Smjacob 381101704Smjacob if (mpt) { 382101704Smjacob mpt_disable_ints(mpt); 383101704Smjacob mpt_cam_detach(mpt); 384101704Smjacob mpt_reset(mpt); 385101704Smjacob mpt_dma_mem_free(mpt); 386101704Smjacob mpt_free_bus_resources(mpt); 387101704Smjacob } 388101704Smjacob return(0); 389101704Smjacob} 390101704Smjacob 391101704Smjacob 392102199Smjacob/* 393101704Smjacob * Disable the hardware 394101704Smjacob */ 395101704Smjacobstatic int 396101704Smjacobmpt_shutdown(device_t dev) 397101704Smjacob{ 398102199Smjacob mpt_softc_t *mpt; 399102199Smjacob mpt = (mpt_softc_t*) device_get_softc(dev); 400101704Smjacob 401101704Smjacob if (mpt) { 402101704Smjacob mpt_reset(mpt); 403101704Smjacob } 404101704Smjacob return(0); 405101704Smjacob} 406101704Smjacob 407101704Smjacob 408101704Smjacobstruct imush { 409102199Smjacob mpt_softc_t *mpt; 410101704Smjacob int error; 411101704Smjacob u_int32_t phys; 412101704Smjacob}; 413101704Smjacob 414101704Smjacobstatic void 415101704Smjacobmpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error) 416101704Smjacob{ 417101704Smjacob struct imush *imushp = (struct imush *) arg; 418101704Smjacob imushp->error = error; 419101704Smjacob imushp->phys = segs->ds_addr; 420101704Smjacob} 421101704Smjacob 422101704Smjacob 423101704Smjacobstatic int 424102199Smjacobmpt_dma_mem_alloc(mpt_softc_t *mpt) 425101704Smjacob{ 426101704Smjacob int i, error; 427101704Smjacob u_char *vptr; 428101704Smjacob u_int32_t pptr, end; 429101704Smjacob struct imush im; 430101704Smjacob device_t dev = mpt->dev; 431101704Smjacob 432101704Smjacob /* Check if we alreay have allocated the reply memory */ 433101704Smjacob if (mpt->reply_phys != NULL) 434101704Smjacob return 0; 435101704Smjacob 436101704Smjacob /* 437101704Smjacob * Create a dma tag for this device 438101704Smjacob * 439101704Smjacob * Align at page boundaries, limit to 32-bit addressing 440101704Smjacob * (The chip supports 64-bit addressing, but this driver doesn't) 441101704Smjacob */ 442101704Smjacob if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT, 443101704Smjacob BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 444101704Smjacob BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0, 445101704Smjacob &mpt->parent_dmat) != 0) { 446101704Smjacob device_printf(dev, "cannot create parent dma tag\n"); 447101704Smjacob return (1); 448101704Smjacob } 449101704Smjacob 450101704Smjacob /* Create a child tag for reply buffers */ 451101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 452101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 453101704Smjacob NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 454101704Smjacob &mpt->reply_dmat) != 0) { 455101704Smjacob device_printf(dev, "cannot create a dma tag for replies\n"); 456101704Smjacob return (1); 457101704Smjacob } 458101704Smjacob 459101704Smjacob /* Allocate some DMA accessable memory for replies */ 460101704Smjacob if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply, 461101704Smjacob BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) { 462101704Smjacob device_printf(dev, "cannot allocate %d bytes of reply memory\n", 463101704Smjacob PAGE_SIZE); 464101704Smjacob return (1); 465101704Smjacob } 466101704Smjacob 467101704Smjacob im.mpt = mpt; 468101704Smjacob im.error = 0; 469101704Smjacob 470101704Smjacob /* Load and lock it into "bus space" */ 471101704Smjacob bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply, 472101704Smjacob PAGE_SIZE, mpt_map_rquest, &im, 0); 473101704Smjacob 474101704Smjacob if (im.error) { 475101704Smjacob device_printf(dev, 476101704Smjacob "error %d loading dma map for DMA reply queue\n", im.error); 477101704Smjacob return (1); 478101704Smjacob } 479101704Smjacob mpt->reply_phys = im.phys; 480101704Smjacob 481101704Smjacob /* Create a child tag for data buffers */ 482101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 483101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 484101704Smjacob NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0, 485101704Smjacob &mpt->buffer_dmat) != 0) { 486101704Smjacob device_printf(dev, 487101704Smjacob "cannot create a dma tag for data buffers\n"); 488101704Smjacob return (1); 489101704Smjacob } 490101704Smjacob 491101704Smjacob /* Create a child tag for request buffers */ 492101704Smjacob if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE, 493101704Smjacob 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, 494101704Smjacob NULL, NULL, MPT_REQ_MEM_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0, 495101704Smjacob &mpt->request_dmat) != 0) { 496101704Smjacob device_printf(dev, "cannot create a dma tag for requests\n"); 497101704Smjacob return (1); 498101704Smjacob } 499101704Smjacob 500101704Smjacob /* Allocate some DMA accessable memory for requests */ 501101704Smjacob if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request, 502101704Smjacob BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) { 503101704Smjacob device_printf(dev, 504101704Smjacob "cannot allocate %d bytes of request memory\n", 505101704Smjacob MPT_REQ_MEM_SIZE); 506101704Smjacob return (1); 507101704Smjacob } 508101704Smjacob 509101704Smjacob im.mpt = mpt; 510101704Smjacob im.error = 0; 511101704Smjacob 512101704Smjacob /* Load and lock it into "bus space" */ 513101704Smjacob bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request, 514101704Smjacob MPT_REQ_MEM_SIZE, mpt_map_rquest, &im, 0); 515101704Smjacob 516101704Smjacob if (im.error) { 517101704Smjacob device_printf(dev, 518101704Smjacob "error %d loading dma map for DMA request queue\n", 519101704Smjacob im.error); 520101704Smjacob return (1); 521101704Smjacob } 522101704Smjacob mpt->request_phys = im.phys; 523101704Smjacob 524101704Smjacob i = 0; 525101704Smjacob pptr = mpt->request_phys; 526101704Smjacob vptr = mpt->request; 527101704Smjacob end = pptr + MPT_REQ_MEM_SIZE; 528101704Smjacob while(pptr < end) { 529101704Smjacob request_t *req = &mpt->requests[i]; 530101704Smjacob req->index = i++; 531101704Smjacob 532101704Smjacob /* Store location of Request Data */ 533101704Smjacob req->req_pbuf = pptr; 534101704Smjacob req->req_vbuf = vptr; 535101704Smjacob 536101704Smjacob pptr += MPT_REQUEST_AREA; 537101704Smjacob vptr += MPT_REQUEST_AREA; 538101704Smjacob 539101704Smjacob req->sense_pbuf = (pptr - MPT_SENSE_SIZE); 540101704Smjacob req->sense_vbuf = (vptr - MPT_SENSE_SIZE); 541101704Smjacob 542101704Smjacob error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap); 543101704Smjacob if (error) { 544101704Smjacob device_printf(dev, 545101704Smjacob "error %d creating per-cmd DMA maps\n", error); 546101704Smjacob return (1); 547101704Smjacob } 548101704Smjacob } 549101704Smjacob return (0); 550101704Smjacob} 551101704Smjacob 552101704Smjacob 553101704Smjacob 554101704Smjacob/* Deallocate memory that was allocated by mpt_dma_mem_alloc 555101704Smjacob */ 556101704Smjacobstatic void 557102199Smjacobmpt_dma_mem_free(mpt_softc_t *mpt) 558101704Smjacob{ 559101704Smjacob int i; 560101704Smjacob 561101704Smjacob /* Make sure we aren't double destroying */ 562101704Smjacob if (mpt->reply_dmat == 0) { 563101704Smjacob if (mpt->verbose) 564101704Smjacob device_printf(mpt->dev,"Already released dma memory\n"); 565101704Smjacob return; 566101704Smjacob } 567101704Smjacob 568101704Smjacob for (i = 0; i < MPT_MAX_REQUESTS; i++) { 569101704Smjacob bus_dmamap_destroy(mpt->buffer_dmat, mpt->requests[i].dmap); 570101704Smjacob } 571101704Smjacob bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap); 572101704Smjacob bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap); 573101704Smjacob bus_dma_tag_destroy(mpt->request_dmat); 574101704Smjacob bus_dma_tag_destroy(mpt->buffer_dmat); 575101704Smjacob bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap); 576101704Smjacob bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap); 577101704Smjacob bus_dma_tag_destroy(mpt->reply_dmat); 578101704Smjacob bus_dma_tag_destroy(mpt->parent_dmat); 579101704Smjacob mpt->reply_dmat = 0; 580101704Smjacob 581101704Smjacob} 582101704Smjacob 583101704Smjacob 584101704Smjacob 585101704Smjacob/* Reads modifiable (via PCI transactions) config registers */ 586101704Smjacobstatic void 587102199Smjacobmpt_read_config_regs(mpt_softc_t *mpt) 588101704Smjacob{ 589101704Smjacob mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2); 590101704Smjacob mpt->pci_cfg.LatencyTimer_LineSize = 591101704Smjacob pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2); 592101704Smjacob mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4); 593101704Smjacob mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4); 594101704Smjacob mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4); 595101704Smjacob mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4); 596101704Smjacob mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4); 597101704Smjacob mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4); 598101704Smjacob mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1); 599101704Smjacob mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4); 600101704Smjacob} 601101704Smjacob 602101704Smjacob/* Sets modifiable config registers */ 603101704Smjacobvoid 604102199Smjacobmpt_set_config_regs(mpt_softc_t *mpt) 605101704Smjacob{ 606101704Smjacob u_int32_t val; 607101704Smjacob 608101704Smjacob#define MPT_CHECK(reg, offset, size) \ 609101704Smjacob val = pci_read_config(mpt->dev, offset, size); \ 610101704Smjacob if (mpt->pci_cfg.reg != val) { \ 611101704Smjacob device_printf(mpt->dev, \ 612101704Smjacob "Restoring " #reg " to 0x%X from 0x%X\n", \ 613101704Smjacob mpt->pci_cfg.reg, val); \ 614101704Smjacob } 615101704Smjacob 616101704Smjacob if (mpt->verbose) { 617101704Smjacob MPT_CHECK(Command, PCIR_COMMAND, 2); 618101704Smjacob MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2); 619101704Smjacob MPT_CHECK(IO_BAR, PCIR_MAPS, 4); 620101704Smjacob MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4); 621101704Smjacob MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4); 622101704Smjacob MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4); 623101704Smjacob MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4); 624101704Smjacob MPT_CHECK(ROM_BAR, PCIR_BIOS, 4); 625101704Smjacob MPT_CHECK(IntLine, PCIR_INTLINE, 1); 626101704Smjacob MPT_CHECK(PMCSR, 0x44, 4); 627101704Smjacob } 628101704Smjacob#undef MPT_CHECK 629101704Smjacob 630101704Smjacob pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2); 631101704Smjacob pci_write_config(mpt->dev, PCIR_CACHELNSZ, 632101704Smjacob mpt->pci_cfg.LatencyTimer_LineSize, 2); 633101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4); 634101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4); 635101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4); 636101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4); 637101704Smjacob pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4); 638101704Smjacob pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4); 639101704Smjacob pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1); 640101704Smjacob pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4); 641101704Smjacob} 642102199Smjacob 643102199Smjacobstatic void 644102199Smjacobmpt_pci_intr(void *arg) 645102199Smjacob{ 646102199Smjacob mpt_softc_t *mpt = arg; 647102199Smjacob MPT_LOCK(mpt); 648102199Smjacob mpt_intr(mpt); 649102199Smjacob MPT_UNLOCK(mpt); 650102199Smjacob} 651