523 lines
15 KiB
C
523 lines
15 KiB
C
/*
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* Copyright (c) 1997 by Simon Shapiro
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* All Rights Reserved
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification, immediately at the beginning of the file.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/*
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* dptpci.c: Pseudo device drivers for DPT on PCI on FreeBSD
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*
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* caveats: We may need an eisa and an isa files too
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*/
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#ident "$Id: dpt_pci.c,v 1.4 1998/02/20 13:11:50 bde Exp $"
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#include "opt_devfs.h"
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#include "opt_dpt.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/buf.h>
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#include <sys/kernel.h>
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#include <scsi/scsiconf.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <sys/dpt.h>
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#include <pci/dpt_pci.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#define PCI_BASEADR0 PCI_MAP_REG_START /* I/O Address */
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#define PCI_BASEADR1 PCI_MAP_REG_START + 4 /* Mem I/O Address */
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#define ISA_PRIMARY_WD_ADDRESS 0x1f8
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/* Global variables */
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/* Function Prototypes */
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static char *dpt_pci_probe(pcici_t tag, pcidi_t type);
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static void dpt_pci_attach(pcici_t config_id, int unit);
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static int dpt_pci_shutdown(int foo, int bar);
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extern struct cdevsw dpt_cdevsw;
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static struct pci_device dpt_pci_driver =
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{
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"dpt",
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dpt_pci_probe,
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dpt_pci_attach,
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&dpt_unit,
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dpt_pci_shutdown
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};
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DATA_SET(pcidevice_set, dpt_pci_driver);
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/*
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* Probe the PCI device.
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* Some of this work will have to be duplicated in _attach
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* because we do not know for sure how the two relate.
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*/
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static char *
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dpt_pci_probe(pcici_t tag, pcidi_t type)
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{
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static char silly_message[64];
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static int already_announced = 0;
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u_int32_t dpt_id;
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u_int32_t command;
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u_int32_t class;
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#define pci_device tag.cfg2.port
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#define pci_bus tag.cfg2.forward
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#define pci_index tag.cfg2.enable
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#ifndef PCI_COMMAND_MASTER_ENABLE
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#define PCI_COMMAND_MASTER_ENABLE 0x00000004
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#endif
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#ifndef PCI_SUBCLASS_MASS_STORAGE_SCSI
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#define PCI_SUBCLASS_MASS_STORAGE_SCSI 0x00000000
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#endif
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if ( !already_announced ) {
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printf("DPT: PCI SCSI HBA Driver, version %d.%d.%d\n",
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DPT_RELEASE, DPT_VERSION, DPT_PATCH);
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++already_announced;
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}
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if ((dpt_id = (type & 0xffff0000) >> 16) == DPT_DEVICE_ID) {
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/* This one appears to belong to us, but what is it? */
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class = pci_conf_read(tag, PCI_CLASS_REG);
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if (((class & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE) &&
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((class & PCI_SUBCLASS_MASK) == PCI_SUBCLASS_MASS_STORAGE_SCSI) ) {
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/* It is a SCSI storage device. How do talk to it? */
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command = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
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#ifdef DPT_ALLOW_MEMIO
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if ( ((command & PCI_COMMAND_IO_ENABLE) == 0)
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&& ((command & PCI_COMMAND_MEM_ENABLE) == 0) )
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#else
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if ( ((command & PCI_COMMAND_IO_ENABLE) == 0) )
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#endif /* DPT_ALLOW_MEMIO */
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{
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printf("DPT: Cannot map the controller registers :-(\n");
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return(NULL);
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}
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} else {
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printf("DPT: Device is not Mass Storage, nor SCSI controller\n");
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return(NULL);
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}
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command = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
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if ( (command & PCI_COMMAND_MASTER_ENABLE) == 0 ) {
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printf("DPT: Cannot be functional without BUSMASTER. :-(\n");
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return (NULL);
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}
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#ifdef DPT_DEBUG_PCI
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printf("DPT: Controller is %s mapable\n",
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(command & PCI_COMMAND_MEM_ENABLE)
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? "MEMORY"
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: ((command & PCI_COMMAND_IO_ENABLE)
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? "I/O"
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: "NOT"));
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#endif
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return ("DPT Caching SCSI RAID Controller");
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}
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#if defined(DPT_DEBUG_PCI) && defined(DPT_DEBUG_WARN)
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printf("DPT: Unknown Controller Type %x Found\n", dpt_id);
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printf(" (class = %x, command = %x\n", class, command);
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#endif
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return (NULL);
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}
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static void
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dpt_pci_attach(pcici_t config_id, int unit)
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{
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int ospl;
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int result;
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int ndx;
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vm_offset_t vaddr;
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vm_offset_t paddr;
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u_int16_t io_base;
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u_int32_t command;
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u_int32_t data;
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dpt_conf_t *config;
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dpt_softc_t *dpt;
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if (dpt_controllers_present >= DPT_MAX_ADAPTERS) {
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printf("dpt%d: More than %d Adapters found! Adapter rejected\n",
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unit, DPT_MAX_ADAPTERS);
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return;
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}
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if ((dpt = (dpt_softc_t *) malloc(sizeof(dpt_softc_t), M_DEVBUF, M_NOWAIT))
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== NULL) {
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printf("dpt%d: Failed to allocate %d bytes for a DPT softc\n",
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unit, sizeof(dpt_softc_t));
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return;
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}
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/*
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* Initialize the queues. See dpt.h for details. We do this here,
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* as we may get hit with interrupts at any moment and we want to
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* have a minimal structure in place to handle them. We also want to
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* register interrupts correctly. To do so, we need a valid dpt
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* structure. To have that, we need this minimal setup here.
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*/
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bzero(dpt, sizeof(dpt_softc_t));
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TAILQ_INIT(&dpt->free_ccbs);
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TAILQ_INIT(&dpt->waiting_ccbs);
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TAILQ_INIT(&dpt->submitted_ccbs);
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TAILQ_INIT(&dpt->completed_ccbs);
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if (TAILQ_EMPTY(&dpt_softc_list)) {
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TAILQ_INIT(&dpt_softc_list);
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}
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TAILQ_INSERT_TAIL(&dpt_softc_list, dpt, links);
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dpt->queue_status = DPT_QUEUES_NONE_ACTIVE;
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dpt->commands_processed = 0;
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#ifdef DPT_MEASURE_PERFORMANCE
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/* Zero out all command counters */
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bzero((void *)&dpt->performance, sizeof(dpt_perf_t));
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for ( ndx = 0; ndx < 256; ndx ++ )
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dpt->performance.min_command_time[ndx] = BIG_ENOUGH;
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dpt->performance.min_intr_time = BIG_ENOUGH;
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dpt->performance.min_waiting_time = BIG_ENOUGH;
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dpt->performance.min_submit_time = BIG_ENOUGH;
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dpt->performance.min_complete_time = BIG_ENOUGH;
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dpt->performance.min_eata_tries = BIG_ENOUGH;
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for (ndx = 0; ndx < 10; ndx++ ) {
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dpt->performance.read_by_size_min_time[ndx] = BIG_ENOUGH;
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dpt->performance.write_by_size_min_time[ndx] = BIG_ENOUGH;
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}
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#endif /* DPT_MEASURE_PERFORMANCE */
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dpt->unit = unit;
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dpt->handle_interrupts = 0; /*
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* Do not set to 1 until all
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* initialization is done
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*/
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dpt->v_membase = NULL;
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dpt->p_membase = NULL;
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io_base = 0;
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vaddr = 0;
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paddr = 0;
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command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
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#ifdef DPT_ALLOW_MEMIO
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if ( (command & PCI_COMMAND_MEM_ENABLE) == 0 ) {
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#ifdef DPT_DEBUG_PCI
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printf("dpt%d: Cannot be memory mapped\n", unit);
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#endif
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force_io:
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if ((command & PCI_COMMAND_IO_ENABLE) == 0 ) {
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printf("dpt%d: Cannot be I/O mapped either :-(\n", unit);
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free(dpt, M_DEVBUF);
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return;
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} else {
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data = pci_conf_read(config_id, PCI_MAP_REG_START);
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if ( pci_map_port(config_id, PCI_MAP_REG_START, &io_base) == 0 ) {
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#ifdef DPT_DEBUG_ERROR
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printf("dpt%d: Failed to map as I/O :-(\n", unit);
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#endif
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free(dpt, M_DEVBUF);
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return;
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} else {
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dpt->io_base = io_base + 0x10;
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#ifdef DPT_DEBUG_PCI
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printf("dpt%d: Mapped registers to I/O space, "
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"starting at %x\n",
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dpt->unit, dpt->io_base);
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#endif
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}
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}
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} else {
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if ( pci_map_mem(config_id, PCI_MAP_REG_START + 4, &vaddr,
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&paddr) == 0 ) {
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#ifdef DPT_DEBUG_ERROR
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printf("dpt%d: Failed to map as MEMORY.\n"
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" Attemting to force I/O mapping\n", unit);
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#endif
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goto force_io;
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} else {
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dpt->v_membase = (volatile u_int8_t *)(vaddr + 0x10);
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dpt->p_membase = (volatile u_int8_t *)(paddr + 0x10);
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#ifdef DPT_DEBUG_PCI
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printf("dpt%d: Mapped registers to MEMORY space, "
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"starting at %x/%x\n",
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dpt->unit, dpt->v_membase, dpt->p_membase);
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#endif
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}
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}
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#else /* !DPT_ALLOW_MEMIO */
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data = pci_conf_read(config_id, PCI_MAP_REG_START);
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if ((command & PCI_COMMAND_IO_ENABLE) == 0 ) {
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printf("dpt%d: Registers cannot be I/O mapped :-(\n", unit);
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free(dpt, M_DEVBUF);
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return;
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} else {
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if ( pci_map_port(config_id, PCI_MAP_REG_START, &io_base) == 0 ) {
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#ifdef DPT_DEBUG_ERROR
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printf("dpt%d: Failed to map registers as I/O :-(\n", unit);
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#endif
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free(dpt, M_DEVBUF);
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return;
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} else {
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dpt->io_base = io_base + 0x10;
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#ifdef DPT_DEBUG_PCI
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printf("dpt%d: Mapped registers to I/O space, starting at %x\n",
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dpt->unit, dpt->io_base);
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#endif
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}
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}
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#endif /* !DPT_ALLOW_MEMIO */
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if (pci_map_int(config_id, dpt_intr, (void *)dpt, &cam_imask) == 0) {
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#ifdef DPT_DEBUG_WARN
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printf("dpt%d: Failed to map interrupt :-(\n", unit);
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#endif
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free(dpt, M_DEVBUF);
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return;
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}
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/* If the DPT is mapped as an IDE controller, let it be IDE controller */
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if (io_base == (ISA_PRIMARY_WD_ADDRESS)) {
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#ifdef DPT_DEBUG_WARN
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printf("dpt%d: Mapped as an IDE controller. "
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"Disabling SCSI setup\n", unit);
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#endif
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free(dpt, M_DEVBUF);
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return;
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} else {
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if ((config = dpt_get_conf(dpt, 0xc1, 7,
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sizeof(dpt_conf_t), 1)) == NULL) {
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#ifdef DPT_DEBUG_ERROR
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printf("dpt%d: Failed to get board configuration (%x)\n",
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unit, BaseRegister(dpt));
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#endif
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free(dpt, M_DEVBUF);
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return;
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}
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}
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dpt->max_id = config->MAX_ID;
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dpt->max_lun = config->MAX_LUN;
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dpt->irq = config->IRQ;
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dpt->channels = config->MAX_CHAN;
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dpt->dma_channel = (8 - config->DMA_channel) & 7;
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#ifdef DPT_DEBUG_SETUP
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printf("dpt%d: max_id = %d, max_chan = %d, max_lun = %d\n",
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dpt->unit, dpt->max_id, dpt->channels, dpt->max_lun);
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#endif
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if (result = dpt_setup(dpt, config)) {
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free(config, M_TEMP);
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free(dpt, M_DEVBUF);
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printf("dpt%d: dpt_setup failed (%d). Driver Disabled :-(\n",
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dpt->unit, result);
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} else {
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/* clean up the informational data, and display */
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char clean_vendor[9];
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char clean_model[17];
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char clean_firmware[5];
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char clean_protocol[5];
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char clean_other[7];
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int ndx;
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strncpy(clean_other, dpt->board_data.otherData, 8);
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clean_other[6] = '\0';
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for (ndx = 5; ndx >= 0; ndx--) {
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if (clean_other[ndx] == ' ')
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clean_other[ndx] = '\0';
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else
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break;
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}
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strncpy(dpt->board_data.otherData, clean_other, 6);
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strncpy(clean_vendor, dpt->board_data.vendor, 8);
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clean_vendor[8] = '\0';
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for (ndx = 7; ndx >= 0; ndx--) {
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if (clean_vendor[ndx] == ' ')
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clean_vendor[ndx] = '\0';
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else
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break;
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}
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strncpy(dpt->board_data.vendor, clean_vendor, 8);
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strncpy(clean_model, dpt->board_data.modelNum, 16);
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clean_model[16] = '\0';
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for (ndx = 15; ndx >= 0; ndx--) {
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if (clean_model[ndx] == ' ')
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clean_model[ndx] = '\0';
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else
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break;
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}
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strncpy(dpt->board_data.modelNum, clean_model, 16);
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strncpy(clean_firmware, dpt->board_data.firmware, 4);
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clean_firmware[4] = '\0';
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for (ndx = 3; ndx >= 0; ndx--) {
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if (clean_firmware[ndx] == ' ')
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clean_firmware[ndx] = '\0';
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else
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break;
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}
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strncpy(dpt->board_data.firmware, clean_firmware, 4);
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strncpy(clean_protocol, dpt->board_data.protocol, 4);
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clean_protocol[4] = '\0';
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for (ndx = 3; ndx >= 0; ndx--) {
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if (clean_protocol[ndx] == ' ')
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clean_protocol[ndx] = '\0';
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else
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break;
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}
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strncpy(dpt->board_data.protocol, clean_protocol, 4);
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dpt_detect_cache(dpt);
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printf("dpt%d: %s type %x, model %s firmware %s, Protocol %s \n"
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" on port %x with %s cache. LED = %s\n",
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dpt->unit, clean_vendor, dpt->board_data.deviceType,
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clean_model, clean_firmware, clean_protocol, dpt->io_base,
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(dpt->cache_type == DPT_NO_CACHE)
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? "Disabled"
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: (dpt->cache_type == DPT_CACHE_WRITETHROUGH)
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? "Write-Through"
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: "Write-Back",
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i2bin(dpt_blinking_led(dpt), 8));
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printf("dpt%d: Enabled Options:\n", dpt->unit);
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#ifdef DPT_LOST_IRQ
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printf(" Recover Lost Interrupts\n");
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#endif
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#ifdef DPT_VERIFY_HINTR
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printf(" Verify Lost Transactions\n");
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#endif
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#ifdef DPT_RESTRICTED_FREELIST
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printf(" Restrict the Freelist Size\n");
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#endif
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#ifdef DPT_MEASURE_PERFORMANCE
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printf(" Collect Metrics\n");
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#endif
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#ifdef DPT_FREELIST_IS_STACK
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printf(" Optimize CPU Cache\n");
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#endif
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#ifdef DPT_HANDLE_TIMEOUTS
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printf(" Handle Timeouts\n");
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#endif
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#ifdef DPT_ALLOW_MEMIO
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printf(" Allow I/O to be Memeory Mapped\n");
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#endif
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#ifdef DPT_HINTR_CHECK_SOFTC
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printf(" Validate SoftC at Interrupt\n");
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#endif
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/* register shutdown handlers */
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result = at_shutdown((bootlist_fn)dpt_shutdown, (void *)dpt,
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SHUTDOWN_POST_SYNC);
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switch ( result ) {
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case 0:
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#ifdef DPT_DEBUG_SHUTDOWN
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printf("dpt%d: Shutdown handler registered\n", dpt->unit);
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#endif
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break;
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default:
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#ifdef DPT_DEBUG_WARN
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printf("dpt%d: Failed to register shutdown handler (%d)\n",
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dpt->unit, result);
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#endif
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break;
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}
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/* Attach SCSI devices */
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dpt_attach(dpt);
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++dpt_controllers_present;
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/*
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* Now we create the DEVFS entry.
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* This would be normally done from dpt_control.c,
|
|
* But since it appears to be called before we do here,
|
|
* We never get the entries made.
|
|
*/
|
|
#ifdef DEVFS
|
|
dpt->devfs_data_token = devfs_add_devswf(&dpt_cdevsw, dpt->unit, DV_CHR,
|
|
UID_ROOT, GID_WHEEL, 0600,
|
|
"dpt%d", dpt->unit);
|
|
dpt->devfs_ctl_token = devfs_add_devswf(&dpt_cdevsw,
|
|
dpt->unit | SCSI_CONTROL_MASK,
|
|
DV_CHR,
|
|
UID_ROOT, GID_WHEEL, 0600,
|
|
"dpt%d.ctl", dpt->unit);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static int
|
|
dpt_pci_shutdown(int foo, int bar)
|
|
{
|
|
#ifdef DPT_DEBUG_WARN
|
|
printf("dpt_pci_shutdown(%x, %x)\n", foo, bar);
|
|
#endif
|
|
return (0);
|
|
}
|
|
|
|
/* End of the DPT PCI part of the driver */
|
|
|
|
/*
|
|
* Hello emacs, these are the
|
|
* Local Variables:
|
|
* c-indent-level: 8
|
|
* c-continued-statement-offset: 8
|
|
* c-continued-brace-offset: 0
|
|
* c-brace-offset: -8
|
|
* c-brace-imaginary-offset: 0
|
|
* c-argdecl-indent: 8
|
|
* c-label-offset: -8
|
|
* c++-hanging-braces: 1
|
|
* c++-access-specifier-offset: -8
|
|
* c++-empty-arglist-indent: 8
|
|
* c++-friend-offset: 0
|
|
* End:
|
|
*/
|