328 lines
8.7 KiB
C
328 lines
8.7 KiB
C
/* $NetBSD: cac_pci.c,v 1.36 2018/12/09 11:14:01 jdolecek Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* PCI front-end for cac(4) driver.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: cac_pci.c,v 1.36 2018/12/09 11:14:01 jdolecek Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/queue.h>
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#include <sys/module.h>
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#include <machine/endian.h>
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#include <sys/bus.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/pci/pcivar.h>
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#include <dev/ic/cacreg.h>
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#include <dev/ic/cacvar.h>
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#include "ioconf.h"
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static struct cac_ccb *cac_pci_l0_completed(struct cac_softc *);
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static int cac_pci_l0_fifo_full(struct cac_softc *);
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static void cac_pci_l0_intr_enable(struct cac_softc *, int);
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static int cac_pci_l0_intr_pending(struct cac_softc *);
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static void cac_pci_l0_submit(struct cac_softc *, struct cac_ccb *);
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static const struct cac_linkage cac_pci_l0 = {
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cac_pci_l0_completed,
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cac_pci_l0_fifo_full,
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cac_pci_l0_intr_enable,
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cac_pci_l0_intr_pending,
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cac_pci_l0_submit
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};
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#define CT_STARTFW 0x01 /* Need to start controller firmware */
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static struct cac_pci_type {
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int ct_subsysid;
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int ct_flags;
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const struct cac_linkage *ct_linkage;
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const char *ct_typestr;
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} const cac_pci_type[] = {
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{ 0x40300e11, 0, &cac_l0, "SMART-2/P" },
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{ 0x40310e11, 0, &cac_l0, "SMART-2SL" },
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{ 0x40320e11, 0, &cac_l0, "Smart Array 3200" },
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{ 0x40330e11, 0, &cac_l0, "Smart Array 3100ES" },
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{ 0x40340e11, 0, &cac_l0, "Smart Array 221" },
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{ 0x40400e11, CT_STARTFW, &cac_pci_l0, "Integrated Array" },
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{ 0x40480e11, CT_STARTFW, &cac_pci_l0, "RAID LC2" },
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{ 0x40500e11, 0, &cac_pci_l0, "Smart Array 4200" },
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{ 0x40510e11, 0, &cac_pci_l0, "Smart Array 4200ES" },
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{ 0x40580e11, 0, &cac_pci_l0, "Smart Array 431" },
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};
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static struct cac_pci_product {
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u_short cp_vendor;
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u_short cp_product;
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} const cac_pci_product[] = {
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{ PCI_VENDOR_COMPAQ, PCI_PRODUCT_COMPAQ_SMART2P },
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{ PCI_VENDOR_DEC, PCI_PRODUCT_DEC_21554 },
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{ PCI_VENDOR_SYMBIOS, PCI_PRODUCT_SYMBIOS_1510 },
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};
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static const struct cac_pci_type *
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cac_pci_findtype(struct pci_attach_args *pa)
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{
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const struct cac_pci_type *ct;
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const struct cac_pci_product *cp;
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pcireg_t subsysid;
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int i;
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cp = cac_pci_product;
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i = 0;
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while (i < sizeof(cac_pci_product) / sizeof(cac_pci_product[0])) {
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if (PCI_VENDOR(pa->pa_id) == cp->cp_vendor &&
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PCI_PRODUCT(pa->pa_id) == cp->cp_product)
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break;
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cp++;
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i++;
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}
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if (i == sizeof(cac_pci_product) / sizeof(cac_pci_product[0]))
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return (NULL);
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subsysid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
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ct = cac_pci_type;
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i = 0;
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while (i < sizeof(cac_pci_type) / sizeof(cac_pci_type[0])) {
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if (subsysid == ct->ct_subsysid)
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break;
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ct++;
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i++;
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}
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if (i == sizeof(cac_pci_type) / sizeof(cac_pci_type[0]))
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return (NULL);
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return (ct);
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}
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static int
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cac_pci_match(device_t parent, cfdata_t match, void *aux)
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{
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return (cac_pci_findtype(aux) != NULL);
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}
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static void
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cac_pci_attach(device_t parent, device_t self, void *aux)
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{
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struct pci_attach_args *pa;
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const struct cac_pci_type *ct;
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struct cac_softc *sc;
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pci_chipset_tag_t pc;
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pci_intr_handle_t ih;
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const char *intrstr;
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pcireg_t reg;
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int memr, ior, i;
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char intrbuf[PCI_INTRSTR_LEN];
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aprint_naive(": RAID controller\n");
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sc = device_private(self);
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sc->sc_dev = self;
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pa = (struct pci_attach_args *)aux;
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pc = pa->pa_pc;
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ct = cac_pci_findtype(pa);
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/*
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* Map the PCI register window.
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*/
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memr = -1;
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ior = -1;
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for (i = 0x10; i <= 0x14; i += 4) {
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reg = pci_conf_read(pa->pa_pc, pa->pa_tag, i);
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if (PCI_MAPREG_TYPE(reg) == PCI_MAPREG_TYPE_IO) {
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if (ior == -1 && PCI_MAPREG_IO_SIZE(reg) != 0)
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ior = i;
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} else {
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if (memr == -1 && PCI_MAPREG_MEM_SIZE(reg) != 0)
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memr = i;
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}
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}
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if (memr != -1) {
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if (pci_mapreg_map(pa, memr, PCI_MAPREG_TYPE_MEM, 0,
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&sc->sc_iot, &sc->sc_ioh, NULL, NULL))
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memr = -1;
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else
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ior = -1;
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}
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if (ior != -1)
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if (pci_mapreg_map(pa, ior, PCI_MAPREG_TYPE_IO, 0,
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&sc->sc_iot, &sc->sc_ioh, NULL, NULL))
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ior = -1;
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if (memr == -1 && ior == -1) {
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aprint_error_dev(self, "can't map i/o or memory space\n");
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return;
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}
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sc->sc_dmat = pa->pa_dmat;
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/* Enable the device. */
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reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
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pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
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reg | PCI_COMMAND_MASTER_ENABLE);
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/* Map and establish the interrupt. */
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if (pci_intr_map(pa, &ih)) {
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aprint_error("can't map interrupt\n");
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return;
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}
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intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
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sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_BIO, cac_intr, sc,
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device_xname(self));
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if (sc->sc_ih == NULL) {
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aprint_error("can't establish interrupt");
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if (intrstr != NULL)
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aprint_error(" at %s", intrstr);
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aprint_error("\n");
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return;
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}
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aprint_normal(": Compaq %s\n", ct->ct_typestr);
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/* Now attach to the bus-independent code. */
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memcpy(&sc->sc_cl, ct->ct_linkage, sizeof(sc->sc_cl));
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cac_init(sc, intrstr, (ct->ct_flags & CT_STARTFW) != 0);
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}
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CFATTACH_DECL3_NEW(cac_pci, sizeof(struct cac_softc),
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cac_pci_match, cac_pci_attach, NULL, NULL, cac_rescan, NULL, 0);
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static void
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cac_pci_l0_submit(struct cac_softc *sc, struct cac_ccb *ccb)
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{
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bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap,
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(char *)ccb - (char *)sc->sc_ccbs,
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sizeof(struct cac_ccb), BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
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cac_outl(sc, CAC_42REG_CMD_FIFO, ccb->ccb_paddr);
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}
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static struct cac_ccb *
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cac_pci_l0_completed(struct cac_softc *sc)
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{
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struct cac_ccb *ccb;
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u_int32_t off;
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if ((off = cac_inl(sc, CAC_42REG_DONE_FIFO)) == 0xffffffffU)
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return (NULL);
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cac_outl(sc, CAC_42REG_DONE_FIFO, 0);
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if ((off & 3) != 0)
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printf("%s: failed command list returned: %lx\n",
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device_xname(sc->sc_dev), (long)off);
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off = (off & ~3) - sc->sc_ccbs_paddr;
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ccb = (struct cac_ccb *)((char *)sc->sc_ccbs + off);
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bus_dmamap_sync(sc->sc_dmat, sc->sc_dmamap, off, sizeof(struct cac_ccb),
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BUS_DMASYNC_PREWRITE | BUS_DMASYNC_PREREAD);
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if ((off & 3) != 0 && ccb->ccb_req.error == 0)
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ccb->ccb_req.error = CAC_RET_CMD_REJECTED;
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return (ccb);
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}
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static int
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cac_pci_l0_intr_pending(struct cac_softc *sc)
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{
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return ((cac_inl(sc, CAC_42REG_STATUS) & CAC_42_EXTINT) != 0);
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}
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static void
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cac_pci_l0_intr_enable(struct cac_softc *sc, int state)
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{
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cac_outl(sc, CAC_42REG_INTR_MASK, (state ? 0 : 8)); /* XXX */
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}
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static int
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cac_pci_l0_fifo_full(struct cac_softc *sc)
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{
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return (cac_inl(sc, CAC_42REG_CMD_FIFO) != 0);
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}
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MODULE(MODULE_CLASS_DRIVER, cac_pci, "cac,pci");
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#ifdef _MODULE
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/*
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* XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
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* XXX it will be defined in the common-code module
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*/
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#undef CFDRIVER_DECL
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#define CFDRIVER_DECL(name, class, attr)
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#include "ioconf.c"
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#endif
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static int
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cac_pci_modcmd(modcmd_t cmd, void *opaque)
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{
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int error = 0;
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#ifdef _MODULE
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switch (cmd) {
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case MODULE_CMD_INIT:
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/*
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* We skip over the first entry in cfdriver[] array
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* since the cfdriver is attached by the common
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* (non-attachment-specific) code.
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*/
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error = config_init_component(&cfdriver_ioconf_cac_pci[1],
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cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci);
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break;
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case MODULE_CMD_FINI:
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error = config_fini_component(&cfdriver_ioconf_cac_pci[1],
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cfattach_ioconf_cac_pci, cfdata_ioconf_cac_pci);
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break;
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default:
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error = ENOTTY;
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break;
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}
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#endif
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return error;
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}
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