fdf39652a4
It can be replaced with nitems(). While here simplify the function Suggested by: jhb
643 lines
17 KiB
C
643 lines
17 KiB
C
/*-
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* Copyright (c) 2007 Bruce M. Simpson.
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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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* 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 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
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* FOR 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <dev/siba/siba_ids.h>
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#include <dev/siba/sibareg.h>
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#include <dev/siba/sibavar.h>
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/*
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* TODO: De-mipsify this code.
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* TODO: cpu clock calculation. -> move to siba_cc instance
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* TODO: Hardwire IRQs for attached cores on siba at probe time.
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* TODO: Support detach.
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* TODO: Power management.
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* TODO: code cleanup.
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* TODO: Support deployments of siba other than as a system bus.
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*/
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#ifndef MIPS_MEM_RID
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#define MIPS_MEM_RID 0x20
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#endif
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extern int rman_debug;
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static struct rman mem_rman; /* XXX move to softc */
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static int siba_debug = 1;
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static const char descfmt[] = "Sonics SiliconBackplane rev %s";
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#define SIBA_DEVDESCLEN sizeof(descfmt) + 8
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/*
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* Device identifiers and descriptions.
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*/
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static struct siba_devid siba_devids[] = {
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{ SIBA_VID_BROADCOM, SIBA_DEVID_CHIPCOMMON, SIBA_REV_ANY,
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"ChipCommon" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_SDRAM, SIBA_REV_ANY,
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"SDRAM controller" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_PCI, SIBA_REV_ANY,
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"PCI host interface" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_MIPS, SIBA_REV_ANY,
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"MIPS core" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_ETHERNET, SIBA_REV_ANY,
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"Ethernet core" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_USB11_HOSTDEV, SIBA_REV_ANY,
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"USB host controller" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_IPSEC, SIBA_REV_ANY,
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"IPSEC accelerator" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_SDRAMDDR, SIBA_REV_ANY,
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"SDRAM/DDR controller" },
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{ SIBA_VID_BROADCOM, SIBA_DEVID_MIPS_3302, SIBA_REV_ANY,
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"MIPS 3302 core" },
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{ 0, 0, 0, NULL }
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};
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static int siba_activate_resource(device_t, device_t, int, int,
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struct resource *);
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static device_t siba_add_child(device_t, u_int, const char *, int);
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static struct resource *
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siba_alloc_resource(device_t, device_t, int, int *, rman_res_t,
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rman_res_t, rman_res_t, u_int);
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static int siba_attach(device_t);
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#ifdef notyet
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static void siba_destroy_devinfo(struct siba_devinfo *);
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#endif
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static struct siba_devid *
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siba_dev_match(uint16_t, uint16_t, uint8_t);
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static struct resource_list *
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siba_get_reslist(device_t, device_t);
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static uint8_t siba_getirq(uint16_t);
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static int siba_print_all_resources(device_t dev);
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static int siba_print_child(device_t, device_t);
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static int siba_probe(device_t);
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static void siba_probe_nomatch(device_t, device_t);
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int siba_read_ivar(device_t, device_t, int, uintptr_t *);
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static struct siba_devinfo *
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siba_setup_devinfo(device_t, uint8_t);
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int siba_write_ivar(device_t, device_t, int, uintptr_t);
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uint8_t siba_getncores(device_t, uint16_t);
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/*
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* On the Sentry5, the system bus IRQs are the same as the
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* MIPS IRQs. Particular cores are hardwired to certain IRQ lines.
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*/
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static uint8_t
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siba_getirq(uint16_t devid)
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{
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uint8_t irq;
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switch (devid) {
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case SIBA_DEVID_CHIPCOMMON:
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irq = 0;
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break;
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case SIBA_DEVID_ETHERNET:
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irq = 1;
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break;
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case SIBA_DEVID_IPSEC:
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irq = 2;
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break;
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case SIBA_DEVID_USB11_HOSTDEV:
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irq = 3;
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break;
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case SIBA_DEVID_PCI:
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irq = 4;
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break;
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#if 0
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/*
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* 5 is reserved for the MIPS on-chip timer interrupt;
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* it is hard-wired by the tick driver.
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*/
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case SIBA_DEVID_MIPS:
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case SIBA_DEVID_MIPS_3302:
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irq = 5;
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break;
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#endif
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default:
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irq = 0xFF; /* this core does not need an irq */
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break;
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}
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return (irq);
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}
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static int
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siba_probe(device_t dev)
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{
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struct siba_softc *sc = device_get_softc(dev);
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uint32_t idlo, idhi;
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uint16_t ccid;
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int rid;
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sc->siba_dev = dev;
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//rman_debug = 1; /* XXX */
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/*
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* Map the ChipCommon register set using the hints the kernel
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* was compiled with.
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*/
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rid = MIPS_MEM_RID;
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sc->siba_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
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RF_ACTIVE);
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if (sc->siba_mem_res == NULL) {
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device_printf(dev, "unable to allocate probe aperture\n");
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return (ENXIO);
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}
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sc->siba_mem_bt = rman_get_bustag(sc->siba_mem_res);
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sc->siba_mem_bh = rman_get_bushandle(sc->siba_mem_res);
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sc->siba_maddr = rman_get_start(sc->siba_mem_res);
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sc->siba_msize = rman_get_size(sc->siba_mem_res);
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if (siba_debug) {
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device_printf(dev, "start %08x len %08x\n",
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sc->siba_maddr, sc->siba_msize);
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}
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idlo = siba_mips_read_4(sc, 0, SIBA_IDLOW);
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idhi = siba_mips_read_4(sc, 0, SIBA_IDHIGH);
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ccid = ((idhi & 0x8ff0) >> 4);
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if (siba_debug) {
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device_printf(dev, "idlo = %08x\n", idlo);
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device_printf(dev, "idhi = %08x\n", idhi);
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device_printf(dev, " chipcore id = %08x\n", ccid);
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}
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/*
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* For now, check that the first core is the ChipCommon core.
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*/
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if (ccid != SIBA_DEVID_CHIPCOMMON) {
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if (siba_debug)
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device_printf(dev, "first core is not ChipCommon\n");
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return (ENXIO);
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}
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/*
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* Determine backplane revision and set description string.
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*/
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uint32_t rev;
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char *revp;
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char descbuf[SIBA_DEVDESCLEN];
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rev = idlo & 0xF0000000;
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revp = "unknown";
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if (rev == 0x00000000)
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revp = "2.2";
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else if (rev == 0x10000000)
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revp = "2.3";
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(void)snprintf(descbuf, sizeof(descbuf), descfmt, revp);
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device_set_desc_copy(dev, descbuf);
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/*
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* Determine how many cores are present on this siba bus, so
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* that we may map them all.
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*/
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uint32_t ccidreg;
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uint16_t cc_id;
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uint16_t cc_rev;
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ccidreg = siba_mips_read_4(sc, 0, SIBA_CC_CHIPID);
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cc_id = (ccidreg & SIBA_CC_IDMASK);
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cc_rev = (ccidreg & SIBA_CC_REVMASK) >> SIBA_CC_REVSHIFT;
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if (siba_debug) {
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device_printf(dev, "ccid = %08x, cc_id = %04x, cc_rev = %04x\n",
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ccidreg, cc_id, cc_rev);
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}
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sc->siba_ncores = siba_getncores(dev, cc_id);
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if (siba_debug) {
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device_printf(dev, "%d cores detected.\n", sc->siba_ncores);
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}
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/*
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* Now we know how many cores are on this siba, release the
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* mapping and allocate a new mapping spanning all cores on the bus.
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*/
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rid = MIPS_MEM_RID;
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int result;
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result = bus_release_resource(dev, SYS_RES_MEMORY, rid,
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sc->siba_mem_res);
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if (result != 0) {
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device_printf(dev, "error %d releasing resource\n", result);
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return (ENXIO);
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}
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uint32_t total;
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total = sc->siba_ncores * SIBA_CORE_LEN;
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/* XXX Don't allocate the entire window until we
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* enumerate the bus. Once the bus has been enumerated,
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* and instance variables/children instantiated + populated,
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* release the resource so children may attach.
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*/
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sc->siba_mem_res = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid,
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sc->siba_maddr, sc->siba_maddr + total - 1, total, RF_ACTIVE);
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if (sc->siba_mem_res == NULL) {
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device_printf(dev, "unable to allocate entire aperture\n");
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return (ENXIO);
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}
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sc->siba_mem_bt = rman_get_bustag(sc->siba_mem_res);
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sc->siba_mem_bh = rman_get_bushandle(sc->siba_mem_res);
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sc->siba_maddr = rman_get_start(sc->siba_mem_res);
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sc->siba_msize = rman_get_size(sc->siba_mem_res);
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if (siba_debug) {
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device_printf(dev, "after remapping: start %08x len %08x\n",
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sc->siba_maddr, sc->siba_msize);
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}
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bus_set_resource(dev, SYS_RES_MEMORY, rid, sc->siba_maddr,
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sc->siba_msize);
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/*
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* We need a manager for the space we claim on nexus to
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* satisfy requests from children.
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* We need to keep the source reservation we took because
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* otherwise it may be claimed elsewhere.
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* XXX move to softc
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*/
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mem_rman.rm_start = sc->siba_maddr;
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mem_rman.rm_end = sc->siba_maddr + sc->siba_msize - 1;
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mem_rman.rm_type = RMAN_ARRAY;
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mem_rman.rm_descr = "SiBa I/O memory addresses";
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if (rman_init(&mem_rman) != 0 ||
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rman_manage_region(&mem_rman, mem_rman.rm_start,
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mem_rman.rm_end) != 0) {
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panic("%s: mem_rman", __func__);
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}
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return (0);
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}
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static int
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siba_attach(device_t dev)
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{
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struct siba_softc *sc = device_get_softc(dev);
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struct siba_devinfo *sdi;
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device_t child;
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int idx;
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if (siba_debug)
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printf("%s: entry\n", __func__);
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bus_generic_probe(dev);
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/*
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* Now that all bus space is mapped and visible to the CPU,
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* enumerate its children.
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* NB: only one core may be mapped at any time if the siba bus
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* is the child of a PCI or PCMCIA bus.
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*/
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for (idx = 0; idx < sc->siba_ncores; idx++) {
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sdi = siba_setup_devinfo(dev, idx);
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child = device_add_child(dev, NULL, -1);
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if (child == NULL)
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panic("%s: device_add_child() failed\n", __func__);
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device_set_ivars(child, sdi);
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}
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return (bus_generic_attach(dev));
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}
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static struct siba_devid *
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siba_dev_match(uint16_t vid, uint16_t devid, uint8_t rev)
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{
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size_t i;
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struct siba_devid *sd;
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sd = &siba_devids[0];
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for (i = 0; i < nitems(siba_devids); i++, sd++) {
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if (((vid == SIBA_VID_ANY) || (vid == sd->sd_vendor)) &&
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((devid == SIBA_DEVID_ANY) || (devid == sd->sd_device)) &&
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((rev == SIBA_REV_ANY) || (rev == sd->sd_rev) ||
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(sd->sd_rev == SIBA_REV_ANY)))
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return(sd);
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}
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return (NULL);
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}
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static int
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siba_print_child(device_t bus, device_t child)
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{
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int retval = 0;
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retval += bus_print_child_header(bus, child);
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retval += siba_print_all_resources(child);
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if (device_get_flags(child))
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retval += printf(" flags %#x", device_get_flags(child));
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retval += printf(" on %s\n", device_get_nameunit(bus));
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return (retval);
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}
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static struct resource *
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siba_alloc_resource(device_t bus, device_t child, int type, int *rid,
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rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
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{
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struct resource *rv;
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struct resource_list *rl;
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struct resource_list_entry *rle;
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int isdefault, needactivate;
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#if 0
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if (siba_debug)
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printf("%s: entry\n", __func__);
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#endif
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isdefault = (RMAN_IS_DEFAULT_RANGE(start, end) && count == 1);
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needactivate = flags & RF_ACTIVE;
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rl = BUS_GET_RESOURCE_LIST(bus, child);
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rle = NULL;
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if (isdefault) {
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rle = resource_list_find(rl, type, *rid);
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if (rle == NULL)
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return (NULL);
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if (rle->res != NULL)
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panic("%s: resource entry is busy", __func__);
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start = rle->start;
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end = rle->end;
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count = rle->count;
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}
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/*
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* If the request is for a resource which we manage,
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* attempt to satisfy the allocation ourselves.
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*/
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if (type == SYS_RES_MEMORY &&
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start >= mem_rman.rm_start && end <= mem_rman.rm_end) {
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rv = rman_reserve_resource(&mem_rman, start, end, count,
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flags, child);
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if (rv == 0) {
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printf("%s: could not reserve resource\n", __func__);
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return (0);
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}
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rman_set_rid(rv, *rid);
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if (needactivate) {
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if (bus_activate_resource(child, type, *rid, rv)) {
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printf("%s: could not activate resource\n",
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__func__);
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rman_release_resource(rv);
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return (0);
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}
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}
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return (rv);
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}
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/*
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* Pass the request to the parent, usually MIPS nexus.
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*/
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if (siba_debug)
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printf("%s: proxying request to parent\n", __func__);
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return (resource_list_alloc(rl, bus, child, type, rid,
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start, end, count, flags));
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}
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/*
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* The parent bus is responsible for resource activation; in the
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* case of MIPS, this boils down to setting the virtual address and
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* bus handle by mapping the physical address into KSEG1.
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*/
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static int
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siba_activate_resource(device_t bus, device_t child, int type, int rid,
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struct resource *r)
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{
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return (BUS_ACTIVATE_RESOURCE(device_get_parent(bus), child, type,
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rid, r));
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}
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static struct siba_devinfo *
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siba_setup_devinfo(device_t dev, uint8_t idx)
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{
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struct siba_softc *sc = device_get_softc(dev);
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struct siba_devinfo *sdi;
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uint32_t idlo, idhi, rev;
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uint16_t vendorid, devid;
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bus_addr_t baseaddr;
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sdi = malloc(sizeof(*sdi), M_DEVBUF, M_WAITOK | M_ZERO);
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resource_list_init(&sdi->sdi_rl);
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idlo = siba_mips_read_4(sc, idx, SIBA_IDLOW);
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idhi = siba_mips_read_4(sc, idx, SIBA_IDHIGH);
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vendorid = (idhi & SIBA_IDHIGH_VENDORMASK) >>
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SIBA_IDHIGH_VENDOR_SHIFT;
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devid = ((idhi & 0x8ff0) >> 4);
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rev = (idhi & SIBA_IDHIGH_REVLO);
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rev |= (idhi & SIBA_IDHIGH_REVHI) >> SIBA_IDHIGH_REVHI_SHIFT;
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sdi->sdi_vid = vendorid;
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sdi->sdi_devid = devid;
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sdi->sdi_rev = rev;
|
|
sdi->sdi_idx = idx;
|
|
sdi->sdi_irq = siba_getirq(devid);
|
|
|
|
/*
|
|
* Determine memory window on bus and irq if one is needed.
|
|
*/
|
|
baseaddr = sc->siba_maddr + (idx * SIBA_CORE_LEN);
|
|
resource_list_add(&sdi->sdi_rl, SYS_RES_MEMORY,
|
|
MIPS_MEM_RID, /* XXX */
|
|
baseaddr, baseaddr + SIBA_CORE_LEN - 1, SIBA_CORE_LEN);
|
|
|
|
if (sdi->sdi_irq != 0xff) {
|
|
resource_list_add(&sdi->sdi_rl, SYS_RES_IRQ,
|
|
0, sdi->sdi_irq, sdi->sdi_irq, 1);
|
|
}
|
|
|
|
return (sdi);
|
|
}
|
|
|
|
#ifdef notyet
|
|
static void
|
|
siba_destroy_devinfo(struct siba_devinfo *sdi)
|
|
{
|
|
|
|
resource_list_free(&sdi->sdi_rl);
|
|
free(sdi, M_DEVBUF);
|
|
}
|
|
#endif
|
|
|
|
/* XXX is this needed? */
|
|
static device_t
|
|
siba_add_child(device_t dev, u_int order, const char *name, int unit)
|
|
{
|
|
#if 1
|
|
|
|
device_printf(dev, "%s: entry\n", __func__);
|
|
return (NULL);
|
|
#else
|
|
device_t child;
|
|
struct siba_devinfo *sdi;
|
|
|
|
child = device_add_child_ordered(dev, order, name, unit);
|
|
if (child == NULL)
|
|
return (NULL);
|
|
|
|
sdi = malloc(sizeof(struct siba_devinfo), M_DEVBUF, M_NOWAIT|M_ZERO);
|
|
if (sdi == NULL)
|
|
return (NULL);
|
|
|
|
device_set_ivars(child, sdi);
|
|
return (child);
|
|
#endif
|
|
}
|
|
|
|
int
|
|
siba_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
|
|
{
|
|
struct siba_devinfo *sdi;
|
|
|
|
sdi = device_get_ivars(child);
|
|
|
|
switch (which) {
|
|
case SIBA_IVAR_VENDOR:
|
|
*result = sdi->sdi_vid;
|
|
break;
|
|
case SIBA_IVAR_DEVICE:
|
|
*result = sdi->sdi_devid;
|
|
break;
|
|
case SIBA_IVAR_REVID:
|
|
*result = sdi->sdi_rev;
|
|
break;
|
|
case SIBA_IVAR_CORE_INDEX:
|
|
*result = sdi->sdi_idx;
|
|
break;
|
|
default:
|
|
return (ENOENT);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
siba_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
|
|
{
|
|
|
|
return (EINVAL);
|
|
}
|
|
|
|
static void
|
|
siba_probe_nomatch(device_t dev, device_t child)
|
|
{
|
|
|
|
/*
|
|
* Announce devices which weren't attached after we probed the bus.
|
|
*/
|
|
if (siba_debug) {
|
|
struct siba_devid *sd;
|
|
|
|
sd = siba_dev_match(siba_get_vendor(child),
|
|
siba_get_device(child), SIBA_REV_ANY);
|
|
if (sd != NULL && sd->sd_desc != NULL) {
|
|
device_printf(dev, "<%s> "
|
|
"at device %d (no driver attached)\n",
|
|
sd->sd_desc, siba_get_core_index(child));
|
|
} else {
|
|
device_printf(dev, "<0x%04x, 0x%04x> "
|
|
"at device %d (no driver attached)\n",
|
|
siba_get_vendor(child), siba_get_device(child),
|
|
siba_get_core_index(child));
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
siba_print_all_resources(device_t dev)
|
|
{
|
|
struct siba_devinfo *sdi = device_get_ivars(dev);
|
|
struct resource_list *rl = &sdi->sdi_rl;
|
|
int retval = 0;
|
|
|
|
if (STAILQ_FIRST(rl))
|
|
retval += printf(" at");
|
|
|
|
retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx");
|
|
retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static struct resource_list *
|
|
siba_get_reslist(device_t dev, device_t child)
|
|
{
|
|
struct siba_devinfo *sdi = device_get_ivars(child);
|
|
|
|
return (&sdi->sdi_rl);
|
|
}
|
|
|
|
static device_method_t siba_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_attach, siba_attach),
|
|
DEVMETHOD(device_detach, bus_generic_detach),
|
|
DEVMETHOD(device_probe, siba_probe),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
|
|
/* Bus interface */
|
|
DEVMETHOD(bus_activate_resource,siba_activate_resource),
|
|
DEVMETHOD(bus_add_child, siba_add_child),
|
|
DEVMETHOD(bus_alloc_resource, siba_alloc_resource),
|
|
DEVMETHOD(bus_get_resource_list,siba_get_reslist),
|
|
DEVMETHOD(bus_print_child, siba_print_child),
|
|
DEVMETHOD(bus_probe_nomatch, siba_probe_nomatch),
|
|
DEVMETHOD(bus_read_ivar, siba_read_ivar),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
DEVMETHOD(bus_write_ivar, siba_write_ivar),
|
|
|
|
DEVMETHOD_END
|
|
};
|
|
|
|
static driver_t siba_driver = {
|
|
"siba",
|
|
siba_methods,
|
|
sizeof(struct siba_softc),
|
|
};
|
|
static devclass_t siba_devclass;
|
|
|
|
DRIVER_MODULE(siba, nexus, siba_driver, siba_devclass, 0, 0);
|