1 /* $FreeBSD: src/sys/dev/mpt/mpt_pci.c,v 1.3.2.3 2002/09/24 21:37:25 mjacob Exp $ */
2 /* $DragonFly: src/sys/dev/disk/mpt/mpt_pci.c,v 1.9 2006/10/25 20:55:53 dillon Exp $ */
4 * PCI specific probe and attach routines for LSI '909 FC adapters.
7 * Copyright (c) 2000, 2001 by Greg Ansley
8 * Partially derived from Matt Jacob's ISP driver.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice immediately at the beginning of the file, without modification,
15 * this list of conditions, and the following disclaimer.
16 * 2. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * Additional Copyright (c) 2002 by Matthew Jacob under same license.
35 #include <sys/param.h>
36 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
41 #include <sys/malloc.h>
43 #include <bus/pci/pcidevs.h>
44 #include <bus/pci/pcireg.h>
45 #include <bus/pci/pcivar.h>
47 #include "mpt_freebsd.h"
49 #ifndef PCIM_CMD_SERRESPEN
50 #define PCIM_CMD_SERRESPEN 0x0100
55 #define MEM_MAP_REG 0x14
56 #define MEM_MAP_SRAM 0x1C
58 static int mpt_probe(device_t);
59 static int mpt_attach(device_t);
60 static void mpt_free_bus_resources(mpt_softc_t *mpt);
61 static int mpt_detach(device_t);
62 static int mpt_shutdown(device_t);
63 static int mpt_dma_mem_alloc(mpt_softc_t *mpt);
64 static void mpt_dma_mem_free(mpt_softc_t *mpt);
65 static void mpt_read_config_regs(mpt_softc_t *mpt);
66 static void mpt_pci_intr(void *);
68 static device_method_t mpt_methods[] = {
69 /* Device interface */
70 DEVMETHOD(device_probe, mpt_probe),
71 DEVMETHOD(device_attach, mpt_attach),
72 DEVMETHOD(device_detach, mpt_detach),
73 DEVMETHOD(device_shutdown, mpt_shutdown),
77 static driver_t mpt_driver = {
78 "mpt", mpt_methods, sizeof (mpt_softc_t)
80 static devclass_t mpt_devclass;
81 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
82 MODULE_VERSION(mpt, 1);
89 mpt_softc_t *mpt = (mpt_softc_t *)dummy;
91 if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
93 reply = mpt_pop_reply_queue(mpt);
94 while (reply != MPT_REPLY_EMPTY) {
96 if (mpt->verbose > 1) {
97 if ((reply & MPT_CONTEXT_REPLY) != 0) {
98 /* Address reply; IOC has something to say */
99 mpt_print_reply(MPT_REPLY_PTOV(mpt, reply));
101 /* Context reply ; all went well */
102 device_printf(mpt->dev,
103 "context %u reply OK\n", reply);
106 mpt_done(mpt, reply);
107 reply = mpt_pop_reply_queue(mpt);
113 mpt_probe(device_t dev)
117 if (pci_get_vendor(dev) != PCI_VENDOR_SYMBIOS)
120 switch ((pci_get_device(dev) & ~1)) {
121 case PCI_PRODUCT_SYMBIOS_FC909:
122 desc = "LSILogic FC909 FC Adapter";
124 case PCI_PRODUCT_SYMBIOS_FC909A:
125 desc = "LSILogic FC909A FC Adapter";
127 case PCI_PRODUCT_SYMBIOS_FC919:
128 desc = "LSILogic FC919 FC Adapter";
130 case PCI_PRODUCT_SYMBIOS_FC929:
131 desc = "LSILogic FC929 FC Adapter";
133 case PCI_PRODUCT_SYMBIOS_1030:
134 desc = "LSILogic 1030 Ultra4 Adapter";
140 device_set_desc(dev, desc);
146 mpt_set_options(mpt_softc_t *mpt)
151 if (kgetenv_int("mpt_disable", &bitmap)) {
152 if (bitmap & (1 << mpt->unit)) {
158 if (kgetenv_int("mpt_debug", &bitmap)) {
159 if (bitmap & (1 << mpt->unit)) {
167 mpt_set_options(mpt_softc_t *mpt)
172 if (resource_int_value(device_get_name(mpt->dev),
173 device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) {
177 if (resource_int_value(device_get_name(mpt->dev),
178 device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) {
179 mpt->verbose += tval;
186 mpt_link_peer(mpt_softc_t *mpt)
190 if (mpt->unit == 0) {
195 * XXX: depends on probe order
197 mpt2 = (mpt_softc_t *) devclass_get_softc(mpt_devclass, mpt->unit-1);
202 if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
205 if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
211 device_printf(mpt->dev, "linking with peer (mpt%d)\n",
212 device_get_unit(mpt2->dev));
218 mpt_attach(device_t dev)
224 /* Allocate the softc structure */
225 mpt = (mpt_softc_t*) device_get_softc(dev);
227 device_printf(dev, "cannot allocate softc\n");
230 bzero(mpt, sizeof (mpt_softc_t));
231 switch ((pci_get_device(dev) & ~1)) {
232 case PCI_PRODUCT_SYMBIOS_FC909:
233 case PCI_PRODUCT_SYMBIOS_FC909A:
234 case PCI_PRODUCT_SYMBIOS_FC919:
235 case PCI_PRODUCT_SYMBIOS_FC929:
242 mpt->unit = device_get_unit(dev);
243 mpt_set_options(mpt);
244 mpt->verbose += (bootverbose != 0)? 1 : 0;
246 /* Make sure memory access decoders are enabled */
247 cmd = pci_read_config(dev, PCIR_COMMAND, 2);
248 if ((cmd & PCIM_CMD_MEMEN) == 0) {
249 device_printf(dev, "Memory accesses disabled");
254 * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
257 PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
258 PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
259 pci_write_config(dev, PCIR_COMMAND, cmd, 2);
262 * Make sure we've disabled the ROM.
264 data = pci_read_config(dev, PCIR_BIOS, 4);
266 pci_write_config(dev, PCIR_BIOS, data, 4);
270 * Is this part a dual?
271 * If so, link with our partner (around yet)
273 if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_SYMBIOS_FC929 ||
274 (pci_get_device(dev) & ~1) == PCI_PRODUCT_SYMBIOS_1030) {
278 /* Set up the memory regions */
279 /* Allocate kernel virtual memory for the 9x9's Mem0 region */
280 mpt->pci_reg_id = MEM_MAP_REG;
281 mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
282 &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE);
283 if (mpt->pci_reg == NULL) {
284 device_printf(dev, "unable to map any ports\n");
287 mpt->pci_st = rman_get_bustag(mpt->pci_reg);
288 mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
289 /* Get the Physical Address */
290 mpt->pci_pa = rman_get_start(mpt->pci_reg);
292 /* Get a handle to the interrupt */
294 mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0,
295 1, RF_ACTIVE | RF_SHAREABLE);
296 if (mpt->pci_irq == NULL) {
297 device_printf(dev, "could not allocate interrupt\n");
301 /* Register the interrupt handler */
302 if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
303 mpt, &mpt->ih, NULL)) {
304 device_printf(dev, "could not setup interrupt\n");
310 /* Disable interrupts at the part */
311 mpt_disable_ints(mpt);
313 /* Allocate dma memory */
314 if (mpt_dma_mem_alloc(mpt)) {
315 device_printf(dev, "Could not allocate DMA memory\n");
320 * Save the PCI config register values
322 * Hard resets are known to screw up the BAR for diagnostic
323 * memory accesses (Mem1).
325 * Using Mem1 is known to make the chip stop responding to
326 * configuration space transfers, so we need to save it now
329 mpt_read_config_regs(mpt);
331 /* Initialize the hardware */
332 if (mpt->disabled == 0) {
334 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) {
349 mpt_dma_mem_free(mpt);
350 mpt_free_bus_resources(mpt);
353 * but return zero to preserve unit numbering
362 mpt_free_bus_resources(mpt_softc_t *mpt)
365 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
370 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq);
375 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id,
379 MPT_LOCK_DESTROY(mpt);
384 * Disconnect ourselves from the system.
387 mpt_detach(device_t dev)
390 mpt = (mpt_softc_t*) device_get_softc(dev);
392 device_printf(mpt->dev,"mpt_detach!\n");
395 mpt_disable_ints(mpt);
398 mpt_dma_mem_free(mpt);
399 mpt_free_bus_resources(mpt);
406 * Disable the hardware
409 mpt_shutdown(device_t dev)
412 mpt = (mpt_softc_t*) device_get_softc(dev);
428 mpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error)
430 struct imush *imushp = (struct imush *) arg;
431 imushp->error = error;
432 imushp->phys = segs->ds_addr;
437 mpt_dma_mem_alloc(mpt_softc_t *mpt)
444 device_t dev = mpt->dev;
446 /* Check if we alreay have allocated the reply memory */
447 if (mpt->reply_phys != NULL) {
451 len = sizeof (request_t *) * MPT_REQ_MEM_SIZE(mpt);
453 mpt->request_pool = (request_t *) kmalloc(len, M_DEVBUF, M_WAITOK);
454 if (mpt->request_pool == NULL) {
455 device_printf(dev, "cannot allocate request pool\n");
458 bzero(mpt->request_pool, len);
460 mpt->request_pool = (request_t *)
461 kmalloc(len, M_DEVBUF, M_WAITOK | M_ZERO);
462 if (mpt->request_pool == NULL) {
463 device_printf(dev, "cannot allocate request pool\n");
469 * Create a dma tag for this device
471 * Align at page boundaries, limit to 32-bit addressing
472 * (The chip supports 64-bit addressing, but this driver doesn't)
474 if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
475 BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT,
476 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0,
477 &mpt->parent_dmat) != 0) {
478 device_printf(dev, "cannot create parent dma tag\n");
482 /* Create a child tag for reply buffers */
483 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
484 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
485 NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
486 &mpt->reply_dmat) != 0) {
487 device_printf(dev, "cannot create a dma tag for replies\n");
491 /* Allocate some DMA accessable memory for replies */
492 if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
493 BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
494 device_printf(dev, "cannot allocate %d bytes of reply memory\n",
502 /* Load and lock it into "bus space" */
503 bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
504 PAGE_SIZE, mpt_map_rquest, &im, 0);
508 "error %d loading dma map for DMA reply queue\n", im.error);
511 mpt->reply_phys = im.phys;
513 /* Create a child tag for data buffers */
514 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
515 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
516 NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0,
517 &mpt->buffer_dmat) != 0) {
519 "cannot create a dma tag for data buffers\n");
523 /* Create a child tag for request buffers */
524 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
525 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
526 NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
527 &mpt->request_dmat) != 0) {
528 device_printf(dev, "cannot create a dma tag for requests\n");
532 /* Allocate some DMA accessable memory for requests */
533 if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
534 BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
536 "cannot allocate %d bytes of request memory\n",
537 MPT_REQ_MEM_SIZE(mpt));
544 /* Load and lock it into "bus space" */
545 bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
546 MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &im, 0);
550 "error %d loading dma map for DMA request queue\n",
554 mpt->request_phys = im.phys;
557 pptr = mpt->request_phys;
559 end = pptr + MPT_REQ_MEM_SIZE(mpt);
561 request_t *req = &mpt->request_pool[i];
564 /* Store location of Request Data */
565 req->req_pbuf = pptr;
566 req->req_vbuf = vptr;
568 pptr += MPT_REQUEST_AREA;
569 vptr += MPT_REQUEST_AREA;
571 req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
572 req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
574 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
577 "error %d creating per-cmd DMA maps\n", error);
586 /* Deallocate memory that was allocated by mpt_dma_mem_alloc
589 mpt_dma_mem_free(mpt_softc_t *mpt)
593 /* Make sure we aren't double destroying */
594 if (mpt->reply_dmat == 0) {
596 device_printf(mpt->dev,"Already released dma memory\n");
600 for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
601 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
603 bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
604 bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
605 bus_dma_tag_destroy(mpt->request_dmat);
606 bus_dma_tag_destroy(mpt->buffer_dmat);
607 bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
608 bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
609 bus_dma_tag_destroy(mpt->reply_dmat);
610 bus_dma_tag_destroy(mpt->parent_dmat);
612 kfree(mpt->request_pool, M_DEVBUF);
613 mpt->request_pool = 0;
619 /* Reads modifiable (via PCI transactions) config registers */
621 mpt_read_config_regs(mpt_softc_t *mpt)
623 mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
624 mpt->pci_cfg.LatencyTimer_LineSize =
625 pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
626 mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4);
627 mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4);
628 mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4);
629 mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4);
630 mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4);
631 mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
632 mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
633 mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
636 /* Sets modifiable config registers */
638 mpt_set_config_regs(mpt_softc_t *mpt)
642 #define MPT_CHECK(reg, offset, size) \
643 val = pci_read_config(mpt->dev, offset, size); \
644 if (mpt->pci_cfg.reg != val) { \
645 device_printf(mpt->dev, \
646 "Restoring " #reg " to 0x%X from 0x%X\n", \
647 mpt->pci_cfg.reg, val); \
651 MPT_CHECK(Command, PCIR_COMMAND, 2);
652 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
653 MPT_CHECK(IO_BAR, PCIR_MAPS, 4);
654 MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4);
655 MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4);
656 MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4);
657 MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4);
658 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
659 MPT_CHECK(IntLine, PCIR_INTLINE, 1);
660 MPT_CHECK(PMCSR, 0x44, 4);
664 pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
665 pci_write_config(mpt->dev, PCIR_CACHELNSZ,
666 mpt->pci_cfg.LatencyTimer_LineSize, 2);
667 pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4);
668 pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4);
669 pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4);
670 pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4);
671 pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4);
672 pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
673 pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
674 pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
678 mpt_pci_intr(void *arg)
680 mpt_softc_t *mpt = arg;
682 (void) mpt_intr(mpt);