1 /* $FreeBSD: src/sys/dev/mpt/mpt_pci.c,v 1.3.2.3 2002/09/24 21:37:25 mjacob Exp $ */
3 * PCI specific probe and attach routines for LSI '909 FC adapters.
6 * Copyright (c) 2000, 2001 by Greg Ansley
7 * Partially derived from Matt Jacob's ISP driver.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice immediately at the beginning of the file, without modification,
14 * this list of conditions, and the following disclaimer.
15 * 2. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
22 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * Additional Copyright (c) 2002 by Matthew Jacob under same license.
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/kernel.h>
37 #include <sys/module.h>
40 #include <pci/pcireg.h>
41 #include <pci/pcivar.h>
43 #include <machine/bus_memio.h>
44 #include <machine/bus_pio.h>
45 #include <machine/bus.h>
46 #include <machine/resource.h>
48 #include <sys/malloc.h>
50 #include <dev/mpt/mpt_freebsd.h>
52 #ifndef PCI_VENDOR_LSI
53 #define PCI_VENDOR_LSI 0x1000
56 #ifndef PCI_PRODUCT_LSI_FC909
57 #define PCI_PRODUCT_LSI_FC909 0x0620
60 #ifndef PCI_PRODUCT_LSI_FC909A
61 #define PCI_PRODUCT_LSI_FC909A 0x0621
64 #ifndef PCI_PRODUCT_LSI_FC919
65 #define PCI_PRODUCT_LSI_FC919 0x0624
68 #ifndef PCI_PRODUCT_LSI_FC929
69 #define PCI_PRODUCT_LSI_FC929 0x0622
72 #ifndef PCI_PRODUCT_LSI_1030
73 #define PCI_PRODUCT_LSI_1030 0x0030
76 #ifndef PCIM_CMD_SERRESPEN
77 #define PCIM_CMD_SERRESPEN 0x0100
82 #define MEM_MAP_REG 0x14
83 #define MEM_MAP_SRAM 0x1C
85 static int mpt_probe(device_t);
86 static int mpt_attach(device_t);
87 static void mpt_free_bus_resources(mpt_softc_t *mpt);
88 static int mpt_detach(device_t);
89 static int mpt_shutdown(device_t);
90 static int mpt_dma_mem_alloc(mpt_softc_t *mpt);
91 static void mpt_dma_mem_free(mpt_softc_t *mpt);
92 static void mpt_read_config_regs(mpt_softc_t *mpt);
93 static void mpt_pci_intr(void *);
95 static device_method_t mpt_methods[] = {
96 /* Device interface */
97 DEVMETHOD(device_probe, mpt_probe),
98 DEVMETHOD(device_attach, mpt_attach),
99 DEVMETHOD(device_detach, mpt_detach),
100 DEVMETHOD(device_shutdown, mpt_shutdown),
104 static driver_t mpt_driver = {
105 "mpt", mpt_methods, sizeof (mpt_softc_t)
107 static devclass_t mpt_devclass;
108 DRIVER_MODULE(mpt, pci, mpt_driver, mpt_devclass, 0, 0);
109 MODULE_VERSION(mpt, 1);
112 mpt_intr(void *dummy)
116 mpt_softc_t *mpt = (mpt_softc_t *)dummy;
118 if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
120 reply = mpt_pop_reply_queue(mpt);
121 while (reply != MPT_REPLY_EMPTY) {
123 if (mpt->verbose > 1) {
124 if ((reply & MPT_CONTEXT_REPLY) != 0) {
125 /* Address reply; IOC has something to say */
126 mpt_print_reply(MPT_REPLY_PTOV(mpt, reply));
128 /* Context reply ; all went well */
129 device_printf(mpt->dev,
130 "context %u reply OK\n", reply);
133 mpt_done(mpt, reply);
134 reply = mpt_pop_reply_queue(mpt);
140 mpt_probe(device_t dev)
144 if (pci_get_vendor(dev) != PCI_VENDOR_LSI)
147 switch ((pci_get_device(dev) & ~1)) {
148 case PCI_PRODUCT_LSI_FC909:
149 desc = "LSILogic FC909 FC Adapter";
151 case PCI_PRODUCT_LSI_FC909A:
152 desc = "LSILogic FC909A FC Adapter";
154 case PCI_PRODUCT_LSI_FC919:
155 desc = "LSILogic FC919 FC Adapter";
157 case PCI_PRODUCT_LSI_FC929:
158 desc = "LSILogic FC929 FC Adapter";
160 case PCI_PRODUCT_LSI_1030:
161 desc = "LSILogic 1030 Ultra4 Adapter";
167 device_set_desc(dev, desc);
173 mpt_set_options(mpt_softc_t *mpt)
178 if (getenv_int("mpt_disable", &bitmap)) {
179 if (bitmap & (1 << mpt->unit)) {
185 if (getenv_int("mpt_debug", &bitmap)) {
186 if (bitmap & (1 << mpt->unit)) {
194 mpt_set_options(mpt_softc_t *mpt)
199 if (resource_int_value(device_get_name(mpt->dev),
200 device_get_unit(mpt->dev), "disable", &tval) == 0 && tval != 0) {
204 if (resource_int_value(device_get_name(mpt->dev),
205 device_get_unit(mpt->dev), "debug", &tval) == 0 && tval != 0) {
206 mpt->verbose += tval;
213 mpt_link_peer(mpt_softc_t *mpt)
217 if (mpt->unit == 0) {
222 * XXX: depends on probe order
224 mpt2 = (mpt_softc_t *) devclass_get_softc(mpt_devclass, mpt->unit-1);
229 if (pci_get_vendor(mpt2->dev) != pci_get_vendor(mpt->dev)) {
232 if (pci_get_device(mpt2->dev) != pci_get_device(mpt->dev)) {
238 device_printf(mpt->dev, "linking with peer (mpt%d)\n",
239 device_get_unit(mpt2->dev));
245 mpt_attach(device_t dev)
251 /* Allocate the softc structure */
252 mpt = (mpt_softc_t*) device_get_softc(dev);
254 device_printf(dev, "cannot allocate softc\n");
257 bzero(mpt, sizeof (mpt_softc_t));
258 switch ((pci_get_device(dev) & ~1)) {
259 case PCI_PRODUCT_LSI_FC909:
260 case PCI_PRODUCT_LSI_FC909A:
261 case PCI_PRODUCT_LSI_FC919:
262 case PCI_PRODUCT_LSI_FC929:
269 mpt->unit = device_get_unit(dev);
270 mpt_set_options(mpt);
271 mpt->verbose += (bootverbose != 0)? 1 : 0;
273 /* Make sure memory access decoders are enabled */
274 cmd = pci_read_config(dev, PCIR_COMMAND, 2);
275 if ((cmd & PCIM_CMD_MEMEN) == 0) {
276 device_printf(dev, "Memory accesses disabled");
281 * Make sure that SERR, PERR, WRITE INVALIDATE and BUSMASTER are set.
284 PCIM_CMD_SERRESPEN | PCIM_CMD_PERRESPEN |
285 PCIM_CMD_BUSMASTEREN | PCIM_CMD_MWRICEN;
286 pci_write_config(dev, PCIR_COMMAND, cmd, 2);
289 * Make sure we've disabled the ROM.
291 data = pci_read_config(dev, PCIR_BIOS, 4);
293 pci_write_config(dev, PCIR_BIOS, data, 4);
297 * Is this part a dual?
298 * If so, link with our partner (around yet)
300 if ((pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_FC929 ||
301 (pci_get_device(dev) & ~1) == PCI_PRODUCT_LSI_1030) {
305 /* Set up the memory regions */
306 /* Allocate kernel virtual memory for the 9x9's Mem0 region */
307 mpt->pci_reg_id = MEM_MAP_REG;
308 mpt->pci_reg = bus_alloc_resource(dev, SYS_RES_MEMORY,
309 &mpt->pci_reg_id, 0, ~0, 0, RF_ACTIVE);
310 if (mpt->pci_reg == NULL) {
311 device_printf(dev, "unable to map any ports\n");
314 mpt->pci_st = rman_get_bustag(mpt->pci_reg);
315 mpt->pci_sh = rman_get_bushandle(mpt->pci_reg);
316 /* Get the Physical Address */
317 mpt->pci_pa = rman_get_start(mpt->pci_reg);
319 /* Get a handle to the interrupt */
321 mpt->pci_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &iqd, 0, ~0,
322 1, RF_ACTIVE | RF_SHAREABLE);
323 if (mpt->pci_irq == NULL) {
324 device_printf(dev, "could not allocate interrupt\n");
328 /* Register the interrupt handler */
329 if (bus_setup_intr(dev, mpt->pci_irq, MPT_IFLAGS, mpt_pci_intr,
331 device_printf(dev, "could not setup interrupt\n");
337 /* Disable interrupts at the part */
338 mpt_disable_ints(mpt);
340 /* Allocate dma memory */
341 if (mpt_dma_mem_alloc(mpt)) {
342 device_printf(dev, "Could not allocate DMA memory\n");
347 * Save the PCI config register values
349 * Hard resets are known to screw up the BAR for diagnostic
350 * memory accesses (Mem1).
352 * Using Mem1 is known to make the chip stop responding to
353 * configuration space transfers, so we need to save it now
356 mpt_read_config_regs(mpt);
358 /* Initialize the hardware */
359 if (mpt->disabled == 0) {
361 if (mpt_init(mpt, MPT_DB_INIT_HOST) != 0) {
369 MPTLOCK_2_CAMLOCK(mpt);
371 CAMLOCK_2_MPTLOCK(mpt);
378 mpt_dma_mem_free(mpt);
379 mpt_free_bus_resources(mpt);
382 * but return zero to preserve unit numbering
391 mpt_free_bus_resources(mpt_softc_t *mpt)
394 bus_teardown_intr(mpt->dev, mpt->pci_irq, mpt->ih);
399 bus_release_resource(mpt->dev, SYS_RES_IRQ, 0, mpt->pci_irq);
404 bus_release_resource(mpt->dev, SYS_RES_MEMORY, mpt->pci_reg_id,
408 MPT_LOCK_DESTROY(mpt);
413 * Disconnect ourselves from the system.
416 mpt_detach(device_t dev)
419 mpt = (mpt_softc_t*) device_get_softc(dev);
421 device_printf(mpt->dev,"mpt_detach!\n");
424 mpt_disable_ints(mpt);
427 mpt_dma_mem_free(mpt);
428 mpt_free_bus_resources(mpt);
435 * Disable the hardware
438 mpt_shutdown(device_t dev)
441 mpt = (mpt_softc_t*) device_get_softc(dev);
457 mpt_map_rquest(void *arg, bus_dma_segment_t *segs, int nseg, int error)
459 struct imush *imushp = (struct imush *) arg;
460 imushp->error = error;
461 imushp->phys = segs->ds_addr;
466 mpt_dma_mem_alloc(mpt_softc_t *mpt)
473 device_t dev = mpt->dev;
475 /* Check if we alreay have allocated the reply memory */
476 if (mpt->reply_phys != NULL) {
480 len = sizeof (request_t *) * MPT_REQ_MEM_SIZE(mpt);
482 mpt->request_pool = (request_t *) malloc(len, M_DEVBUF, M_WAITOK);
483 if (mpt->request_pool == NULL) {
484 device_printf(dev, "cannot allocate request pool\n");
487 bzero(mpt->request_pool, len);
489 mpt->request_pool = (request_t *)
490 malloc(len, M_DEVBUF, M_WAITOK | M_ZERO);
491 if (mpt->request_pool == NULL) {
492 device_printf(dev, "cannot allocate request pool\n");
498 * Create a dma tag for this device
500 * Align at page boundaries, limit to 32-bit addressing
501 * (The chip supports 64-bit addressing, but this driver doesn't)
503 if (bus_dma_tag_create(NULL, PAGE_SIZE, 0, BUS_SPACE_MAXADDR_32BIT,
504 BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT,
505 BUS_SPACE_MAXSIZE_32BIT, BUS_SPACE_UNRESTRICTED, 0,
506 &mpt->parent_dmat) != 0) {
507 device_printf(dev, "cannot create parent dma tag\n");
511 /* Create a child tag for reply buffers */
512 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
513 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
514 NULL, NULL, PAGE_SIZE, 1, BUS_SPACE_MAXSIZE_32BIT, 0,
515 &mpt->reply_dmat) != 0) {
516 device_printf(dev, "cannot create a dma tag for replies\n");
520 /* Allocate some DMA accessable memory for replies */
521 if (bus_dmamem_alloc(mpt->reply_dmat, (void **)&mpt->reply,
522 BUS_DMA_NOWAIT, &mpt->reply_dmap) != 0) {
523 device_printf(dev, "cannot allocate %d bytes of reply memory\n",
531 /* Load and lock it into "bus space" */
532 bus_dmamap_load(mpt->reply_dmat, mpt->reply_dmap, mpt->reply,
533 PAGE_SIZE, mpt_map_rquest, &im, 0);
537 "error %d loading dma map for DMA reply queue\n", im.error);
540 mpt->reply_phys = im.phys;
542 /* Create a child tag for data buffers */
543 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
544 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
545 NULL, NULL, MAXBSIZE, MPT_SGL_MAX, BUS_SPACE_MAXSIZE_32BIT, 0,
546 &mpt->buffer_dmat) != 0) {
548 "cannot create a dma tag for data buffers\n");
552 /* Create a child tag for request buffers */
553 if (bus_dma_tag_create(mpt->parent_dmat, PAGE_SIZE,
554 0, BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR,
555 NULL, NULL, MPT_REQ_MEM_SIZE(mpt), 1, BUS_SPACE_MAXSIZE_32BIT, 0,
556 &mpt->request_dmat) != 0) {
557 device_printf(dev, "cannot create a dma tag for requests\n");
561 /* Allocate some DMA accessable memory for requests */
562 if (bus_dmamem_alloc(mpt->request_dmat, (void **)&mpt->request,
563 BUS_DMA_NOWAIT, &mpt->request_dmap) != 0) {
565 "cannot allocate %d bytes of request memory\n",
566 MPT_REQ_MEM_SIZE(mpt));
573 /* Load and lock it into "bus space" */
574 bus_dmamap_load(mpt->request_dmat, mpt->request_dmap, mpt->request,
575 MPT_REQ_MEM_SIZE(mpt), mpt_map_rquest, &im, 0);
579 "error %d loading dma map for DMA request queue\n",
583 mpt->request_phys = im.phys;
586 pptr = mpt->request_phys;
588 end = pptr + MPT_REQ_MEM_SIZE(mpt);
590 request_t *req = &mpt->request_pool[i];
593 /* Store location of Request Data */
594 req->req_pbuf = pptr;
595 req->req_vbuf = vptr;
597 pptr += MPT_REQUEST_AREA;
598 vptr += MPT_REQUEST_AREA;
600 req->sense_pbuf = (pptr - MPT_SENSE_SIZE);
601 req->sense_vbuf = (vptr - MPT_SENSE_SIZE);
603 error = bus_dmamap_create(mpt->buffer_dmat, 0, &req->dmap);
606 "error %d creating per-cmd DMA maps\n", error);
615 /* Deallocate memory that was allocated by mpt_dma_mem_alloc
618 mpt_dma_mem_free(mpt_softc_t *mpt)
622 /* Make sure we aren't double destroying */
623 if (mpt->reply_dmat == 0) {
625 device_printf(mpt->dev,"Already released dma memory\n");
629 for (i = 0; i < MPT_MAX_REQUESTS(mpt); i++) {
630 bus_dmamap_destroy(mpt->buffer_dmat, mpt->request_pool[i].dmap);
632 bus_dmamap_unload(mpt->request_dmat, mpt->request_dmap);
633 bus_dmamem_free(mpt->request_dmat, mpt->request, mpt->request_dmap);
634 bus_dma_tag_destroy(mpt->request_dmat);
635 bus_dma_tag_destroy(mpt->buffer_dmat);
636 bus_dmamap_unload(mpt->reply_dmat, mpt->reply_dmap);
637 bus_dmamem_free(mpt->reply_dmat, mpt->reply, mpt->reply_dmap);
638 bus_dma_tag_destroy(mpt->reply_dmat);
639 bus_dma_tag_destroy(mpt->parent_dmat);
641 free(mpt->request_pool, M_DEVBUF);
642 mpt->request_pool = 0;
648 /* Reads modifiable (via PCI transactions) config registers */
650 mpt_read_config_regs(mpt_softc_t *mpt)
652 mpt->pci_cfg.Command = pci_read_config(mpt->dev, PCIR_COMMAND, 2);
653 mpt->pci_cfg.LatencyTimer_LineSize =
654 pci_read_config(mpt->dev, PCIR_CACHELNSZ, 2);
655 mpt->pci_cfg.IO_BAR = pci_read_config(mpt->dev, PCIR_MAPS, 4);
656 mpt->pci_cfg.Mem0_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0x4, 4);
657 mpt->pci_cfg.Mem0_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x8, 4);
658 mpt->pci_cfg.Mem1_BAR[0] = pci_read_config(mpt->dev, PCIR_MAPS+0xC, 4);
659 mpt->pci_cfg.Mem1_BAR[1] = pci_read_config(mpt->dev, PCIR_MAPS+0x10, 4);
660 mpt->pci_cfg.ROM_BAR = pci_read_config(mpt->dev, PCIR_BIOS, 4);
661 mpt->pci_cfg.IntLine = pci_read_config(mpt->dev, PCIR_INTLINE, 1);
662 mpt->pci_cfg.PMCSR = pci_read_config(mpt->dev, 0x44, 4);
665 /* Sets modifiable config registers */
667 mpt_set_config_regs(mpt_softc_t *mpt)
671 #define MPT_CHECK(reg, offset, size) \
672 val = pci_read_config(mpt->dev, offset, size); \
673 if (mpt->pci_cfg.reg != val) { \
674 device_printf(mpt->dev, \
675 "Restoring " #reg " to 0x%X from 0x%X\n", \
676 mpt->pci_cfg.reg, val); \
680 MPT_CHECK(Command, PCIR_COMMAND, 2);
681 MPT_CHECK(LatencyTimer_LineSize, PCIR_CACHELNSZ, 2);
682 MPT_CHECK(IO_BAR, PCIR_MAPS, 4);
683 MPT_CHECK(Mem0_BAR[0], PCIR_MAPS+0x4, 4);
684 MPT_CHECK(Mem0_BAR[1], PCIR_MAPS+0x8, 4);
685 MPT_CHECK(Mem1_BAR[0], PCIR_MAPS+0xC, 4);
686 MPT_CHECK(Mem1_BAR[1], PCIR_MAPS+0x10, 4);
687 MPT_CHECK(ROM_BAR, PCIR_BIOS, 4);
688 MPT_CHECK(IntLine, PCIR_INTLINE, 1);
689 MPT_CHECK(PMCSR, 0x44, 4);
693 pci_write_config(mpt->dev, PCIR_COMMAND, mpt->pci_cfg.Command, 2);
694 pci_write_config(mpt->dev, PCIR_CACHELNSZ,
695 mpt->pci_cfg.LatencyTimer_LineSize, 2);
696 pci_write_config(mpt->dev, PCIR_MAPS, mpt->pci_cfg.IO_BAR, 4);
697 pci_write_config(mpt->dev, PCIR_MAPS+0x4, mpt->pci_cfg.Mem0_BAR[0], 4);
698 pci_write_config(mpt->dev, PCIR_MAPS+0x8, mpt->pci_cfg.Mem0_BAR[1], 4);
699 pci_write_config(mpt->dev, PCIR_MAPS+0xC, mpt->pci_cfg.Mem1_BAR[0], 4);
700 pci_write_config(mpt->dev, PCIR_MAPS+0x10, mpt->pci_cfg.Mem1_BAR[1], 4);
701 pci_write_config(mpt->dev, PCIR_BIOS, mpt->pci_cfg.ROM_BAR, 4);
702 pci_write_config(mpt->dev, PCIR_INTLINE, mpt->pci_cfg.IntLine, 1);
703 pci_write_config(mpt->dev, 0x44, mpt->pci_cfg.PMCSR, 4);
707 mpt_pci_intr(void *arg)
709 mpt_softc_t *mpt = arg;
711 (void) mpt_intr(mpt);