123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859 |
- /*-
- * SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright (c) 2006-2008, Juniper Networks, Inc.
- * Copyright (c) 2008 Semihalf, Rafal Czubak
- * Copyright (c) 2009 The FreeBSD Foundation
- * All rights reserved.
- *
- * Portions of this software were developed by Semihalf
- * under sponsorship from the FreeBSD Foundation.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include "opt_platform.h"
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/systm.h>
- #include <sys/ktr.h>
- #include <sys/kernel.h>
- #include <sys/malloc.h>
- #include <sys/module.h>
- #include <sys/bus.h>
- #include <sys/rman.h>
- #include <machine/bus.h>
- #include <vm/vm.h>
- #include <vm/pmap.h>
- #include <dev/fdt/fdt_common.h>
- #include <dev/ofw/ofw_bus.h>
- #include <dev/ofw/ofw_bus_subr.h>
- #include <powerpc/mpc85xx/mpc85xx.h>
- #include "ofw_bus_if.h"
- #include "lbc.h"
- #ifdef DEBUG
- #define debugf(fmt, args...) do { printf("%s(): ", __func__); \
- printf(fmt,##args); } while (0)
- #else
- #define debugf(fmt, args...)
- #endif
- static MALLOC_DEFINE(M_LBC, "localbus", "localbus devices information");
- static int lbc_probe(device_t);
- static int lbc_attach(device_t);
- static int lbc_shutdown(device_t);
- static int lbc_activate_resource(device_t bus __unused, device_t child __unused,
- int type, int rid __unused, struct resource *r);
- static int lbc_deactivate_resource(device_t bus __unused,
- device_t child __unused, int type __unused, int rid __unused,
- struct resource *r);
- static struct resource *lbc_alloc_resource(device_t, device_t, int, int *,
- rman_res_t, rman_res_t, rman_res_t, u_int);
- static int lbc_print_child(device_t, device_t);
- static int lbc_release_resource(device_t, device_t, int, int,
- struct resource *);
- static const struct ofw_bus_devinfo *lbc_get_devinfo(device_t, device_t);
- /*
- * Bus interface definition
- */
- static device_method_t lbc_methods[] = {
- /* Device interface */
- DEVMETHOD(device_probe, lbc_probe),
- DEVMETHOD(device_attach, lbc_attach),
- DEVMETHOD(device_shutdown, lbc_shutdown),
- /* Bus interface */
- DEVMETHOD(bus_print_child, lbc_print_child),
- DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
- DEVMETHOD(bus_teardown_intr, NULL),
- DEVMETHOD(bus_alloc_resource, lbc_alloc_resource),
- DEVMETHOD(bus_release_resource, lbc_release_resource),
- DEVMETHOD(bus_activate_resource, lbc_activate_resource),
- DEVMETHOD(bus_deactivate_resource, lbc_deactivate_resource),
- /* OFW bus interface */
- DEVMETHOD(ofw_bus_get_devinfo, lbc_get_devinfo),
- DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
- DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
- DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
- DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
- DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
- { 0, 0 }
- };
- static driver_t lbc_driver = {
- "lbc",
- lbc_methods,
- sizeof(struct lbc_softc)
- };
- devclass_t lbc_devclass;
- EARLY_DRIVER_MODULE(lbc, ofwbus, lbc_driver, lbc_devclass,
- 0, 0, BUS_PASS_BUS);
- /*
- * Calculate address mask used by OR(n) registers. Use memory region size to
- * determine mask value. The size must be a power of two and within the range
- * of 32KB - 4GB. Otherwise error code is returned. Value representing
- * 4GB size can be passed as 0xffffffff.
- */
- static uint32_t
- lbc_address_mask(uint32_t size)
- {
- int n = 15;
- if (size == ~0)
- return (0);
- while (n < 32) {
- if (size == (1U << n))
- break;
- n++;
- }
- if (n == 32)
- return (EINVAL);
- return (0xffff8000 << (n - 15));
- }
- static void
- lbc_banks_unmap(struct lbc_softc *sc)
- {
- int r;
- r = 0;
- while (r < LBC_DEV_MAX) {
- if (sc->sc_range[r].size == 0)
- return;
- pmap_unmapdev(sc->sc_range[r].kva, sc->sc_range[r].size);
- law_disable(OCP85XX_TGTIF_LBC, sc->sc_range[r].addr,
- sc->sc_range[r].size);
- r++;
- }
- }
- static int
- lbc_banks_map(struct lbc_softc *sc)
- {
- vm_paddr_t end, start;
- vm_size_t size;
- u_int i, r, ranges, s;
- int error;
- bzero(sc->sc_range, sizeof(sc->sc_range));
- /*
- * Determine number of discontiguous address ranges to program.
- */
- ranges = 0;
- for (i = 0; i < LBC_DEV_MAX; i++) {
- size = sc->sc_banks[i].size;
- if (size == 0)
- continue;
- start = sc->sc_banks[i].addr;
- for (r = 0; r < ranges; r++) {
- /* Avoid wrap-around bugs. */
- end = sc->sc_range[r].addr - 1 + sc->sc_range[r].size;
- if (start > 0 && end == start - 1) {
- sc->sc_range[r].size += size;
- break;
- }
- /* Avoid wrap-around bugs. */
- end = start - 1 + size;
- if (sc->sc_range[r].addr > 0 &&
- end == sc->sc_range[r].addr - 1) {
- sc->sc_range[r].addr = start;
- sc->sc_range[r].size += size;
- break;
- }
- }
- if (r == ranges) {
- /* New range; add using insertion sort */
- r = 0;
- while (r < ranges && sc->sc_range[r].addr < start)
- r++;
- for (s = ranges; s > r; s--)
- sc->sc_range[s] = sc->sc_range[s-1];
- sc->sc_range[r].addr = start;
- sc->sc_range[r].size = size;
- ranges++;
- }
- }
- /*
- * Ranges are sorted so quickly go over the list to merge ranges
- * that grew toward each other while building the ranges.
- */
- r = 0;
- while (r < ranges - 1) {
- end = sc->sc_range[r].addr + sc->sc_range[r].size;
- if (end != sc->sc_range[r+1].addr) {
- r++;
- continue;
- }
- sc->sc_range[r].size += sc->sc_range[r+1].size;
- for (s = r + 1; s < ranges - 1; s++)
- sc->sc_range[s] = sc->sc_range[s+1];
- bzero(&sc->sc_range[s], sizeof(sc->sc_range[s]));
- ranges--;
- }
- /*
- * Configure LAW for the LBC ranges and map the physical memory
- * range into KVA.
- */
- for (r = 0; r < ranges; r++) {
- start = sc->sc_range[r].addr;
- size = sc->sc_range[r].size;
- error = law_enable(OCP85XX_TGTIF_LBC, start, size);
- if (error)
- return (error);
- sc->sc_range[r].kva = (vm_offset_t)pmap_mapdev(start, size);
- }
- /* XXX: need something better here? */
- if (ranges == 0)
- return (EINVAL);
- /* Assign KVA to banks based on the enclosing range. */
- for (i = 0; i < LBC_DEV_MAX; i++) {
- size = sc->sc_banks[i].size;
- if (size == 0)
- continue;
- start = sc->sc_banks[i].addr;
- for (r = 0; r < ranges; r++) {
- end = sc->sc_range[r].addr - 1 + sc->sc_range[r].size;
- if (start >= sc->sc_range[r].addr &&
- start - 1 + size <= end)
- break;
- }
- if (r < ranges) {
- sc->sc_banks[i].kva = sc->sc_range[r].kva +
- (start - sc->sc_range[r].addr);
- }
- }
- return (0);
- }
- static int
- lbc_banks_enable(struct lbc_softc *sc)
- {
- uint32_t size;
- uint32_t regval;
- int error, i;
- for (i = 0; i < LBC_DEV_MAX; i++) {
- size = sc->sc_banks[i].size;
- if (size == 0)
- continue;
- /*
- * Compute and program BR value.
- */
- regval = sc->sc_banks[i].addr;
- switch (sc->sc_banks[i].width) {
- case 8:
- regval |= (1 << 11);
- break;
- case 16:
- regval |= (2 << 11);
- break;
- case 32:
- regval |= (3 << 11);
- break;
- default:
- error = EINVAL;
- goto fail;
- }
- regval |= (sc->sc_banks[i].decc << 9);
- regval |= (sc->sc_banks[i].wp << 8);
- regval |= (sc->sc_banks[i].msel << 5);
- regval |= (sc->sc_banks[i].atom << 2);
- regval |= 1;
- bus_space_write_4(sc->sc_bst, sc->sc_bsh,
- LBC85XX_BR(i), regval);
- /*
- * Compute and program OR value.
- */
- regval = lbc_address_mask(size);
- switch (sc->sc_banks[i].msel) {
- case LBCRES_MSEL_GPCM:
- /* TODO Add flag support for option registers */
- regval |= 0x0ff7;
- break;
- case LBCRES_MSEL_FCM:
- /* TODO Add flag support for options register */
- regval |= 0x0796;
- break;
- case LBCRES_MSEL_UPMA:
- case LBCRES_MSEL_UPMB:
- case LBCRES_MSEL_UPMC:
- printf("UPM mode not supported yet!");
- error = ENOSYS;
- goto fail;
- }
- bus_space_write_4(sc->sc_bst, sc->sc_bsh,
- LBC85XX_OR(i), regval);
- }
- return (0);
- fail:
- lbc_banks_unmap(sc);
- return (error);
- }
- static void
- fdt_lbc_fixup(phandle_t node, struct lbc_softc *sc, struct lbc_devinfo *di)
- {
- pcell_t width;
- int bank;
- if (OF_getprop(node, "bank-width", (void *)&width, sizeof(width)) <= 0)
- return;
- bank = di->di_bank;
- if (sc->sc_banks[bank].size == 0)
- return;
- /* Express width in bits. */
- sc->sc_banks[bank].width = width * 8;
- }
- static int
- fdt_lbc_reg_decode(phandle_t node, struct lbc_softc *sc,
- struct lbc_devinfo *di)
- {
- rman_res_t start, end, count;
- pcell_t *reg, *regptr;
- pcell_t addr_cells, size_cells;
- int tuple_size, tuples;
- int i, j, rv, bank;
- if (fdt_addrsize_cells(OF_parent(node), &addr_cells, &size_cells) != 0)
- return (ENXIO);
- tuple_size = sizeof(pcell_t) * (addr_cells + size_cells);
- tuples = OF_getencprop_alloc_multi(node, "reg", tuple_size,
- (void **)®);
- debugf("addr_cells = %d, size_cells = %d\n", addr_cells, size_cells);
- debugf("tuples = %d, tuple size = %d\n", tuples, tuple_size);
- if (tuples <= 0)
- /* No 'reg' property in this node. */
- return (0);
- regptr = reg;
- for (i = 0; i < tuples; i++) {
- bank = fdt_data_get((void *)reg, 1);
- di->di_bank = bank;
- reg += 1;
- /* Get address/size. */
- start = count = 0;
- for (j = 0; j < addr_cells - 1; j++) {
- start <<= 32;
- start |= reg[j];
- }
- for (j = 0; j < size_cells; j++) {
- count <<= 32;
- count |= reg[addr_cells + j - 1];
- }
- reg += addr_cells - 1 + size_cells;
- /* Calculate address range relative to VA base. */
- start = sc->sc_banks[bank].kva + start;
- end = start + count - 1;
- debugf("reg addr bank = %d, start = %jx, end = %jx, "
- "count = %jx\n", bank, start, end, count);
- /* Use bank (CS) cell as rid. */
- resource_list_add(&di->di_res, SYS_RES_MEMORY, bank, start,
- end, count);
- }
- rv = 0;
- OF_prop_free(regptr);
- return (rv);
- }
- static void
- lbc_intr(void *arg)
- {
- struct lbc_softc *sc = arg;
- uint32_t ltesr;
- ltesr = bus_space_read_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LTESR);
- sc->sc_ltesr = ltesr;
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LTESR, ltesr);
- wakeup(sc->sc_dev);
- }
- static int
- lbc_probe(device_t dev)
- {
- if (!(ofw_bus_is_compatible(dev, "fsl,lbc") ||
- ofw_bus_is_compatible(dev, "fsl,elbc")))
- return (ENXIO);
- device_set_desc(dev, "Freescale Local Bus Controller");
- return (BUS_PROBE_DEFAULT);
- }
- static int
- lbc_attach(device_t dev)
- {
- struct lbc_softc *sc;
- struct lbc_devinfo *di;
- struct rman *rm;
- uintmax_t offset, size;
- vm_paddr_t start;
- device_t cdev;
- phandle_t node, child;
- pcell_t *ranges, *rangesptr;
- int tuple_size, tuples;
- int par_addr_cells;
- int bank, error, i, j;
- sc = device_get_softc(dev);
- sc->sc_dev = dev;
- sc->sc_mrid = 0;
- sc->sc_mres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->sc_mrid,
- RF_ACTIVE);
- if (sc->sc_mres == NULL)
- return (ENXIO);
- sc->sc_bst = rman_get_bustag(sc->sc_mres);
- sc->sc_bsh = rman_get_bushandle(sc->sc_mres);
- for (bank = 0; bank < LBC_DEV_MAX; bank++) {
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_BR(bank), 0);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_OR(bank), 0);
- }
- /*
- * Initialize configuration register:
- * - enable Local Bus
- * - set data buffer control signal function
- * - disable parity byte select
- * - set ECC parity type
- * - set bus monitor timing and timer prescale
- */
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LBCR, 0);
- /*
- * Initialize clock ratio register:
- * - disable PLL bypass mode
- * - configure LCLK delay cycles for the assertion of LALE
- * - set system clock divider
- */
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LCRR, 0x00030008);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LTEDR, 0);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LTESR, ~0);
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, LBC85XX_LTEIR, 0x64080001);
- sc->sc_irid = 0;
- sc->sc_ires = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->sc_irid,
- RF_ACTIVE | RF_SHAREABLE);
- if (sc->sc_ires != NULL) {
- error = bus_setup_intr(dev, sc->sc_ires,
- INTR_TYPE_MISC | INTR_MPSAFE, NULL, lbc_intr, sc,
- &sc->sc_icookie);
- if (error) {
- device_printf(dev, "could not activate interrupt\n");
- bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irid,
- sc->sc_ires);
- sc->sc_ires = NULL;
- }
- }
- sc->sc_ltesr = ~0;
- rangesptr = NULL;
- rm = &sc->sc_rman;
- rm->rm_type = RMAN_ARRAY;
- rm->rm_descr = "Local Bus Space";
- error = rman_init(rm);
- if (error)
- goto fail;
- error = rman_manage_region(rm, rm->rm_start, rm->rm_end);
- if (error) {
- rman_fini(rm);
- goto fail;
- }
- /*
- * Process 'ranges' property.
- */
- node = ofw_bus_get_node(dev);
- if ((fdt_addrsize_cells(node, &sc->sc_addr_cells,
- &sc->sc_size_cells)) != 0) {
- error = ENXIO;
- goto fail;
- }
- par_addr_cells = fdt_parent_addr_cells(node);
- if (par_addr_cells > 2) {
- device_printf(dev, "unsupported parent #addr-cells\n");
- error = ERANGE;
- goto fail;
- }
- tuple_size = sizeof(pcell_t) * (sc->sc_addr_cells + par_addr_cells +
- sc->sc_size_cells);
- tuples = OF_getencprop_alloc_multi(node, "ranges", tuple_size,
- (void **)&ranges);
- if (tuples < 0) {
- device_printf(dev, "could not retrieve 'ranges' property\n");
- error = ENXIO;
- goto fail;
- }
- rangesptr = ranges;
- debugf("par addr_cells = %d, addr_cells = %d, size_cells = %d, "
- "tuple_size = %d, tuples = %d\n", par_addr_cells,
- sc->sc_addr_cells, sc->sc_size_cells, tuple_size, tuples);
- start = 0;
- size = 0;
- for (i = 0; i < tuples; i++) {
- /* The first cell is the bank (chip select) number. */
- bank = fdt_data_get(ranges, 1);
- if (bank < 0 || bank > LBC_DEV_MAX) {
- device_printf(dev, "bank out of range: %d\n", bank);
- error = ERANGE;
- goto fail;
- }
- ranges += 1;
- /*
- * Remaining cells of the child address define offset into
- * this CS.
- */
- offset = 0;
- for (j = 0; j < sc->sc_addr_cells - 1; j++) {
- offset <<= sizeof(pcell_t) * 8;
- offset |= *ranges;
- ranges++;
- }
- /* Parent bus start address of this bank. */
- start = 0;
- for (j = 0; j < par_addr_cells; j++) {
- start <<= sizeof(pcell_t) * 8;
- start |= *ranges;
- ranges++;
- }
- size = fdt_data_get((void *)ranges, sc->sc_size_cells);
- ranges += sc->sc_size_cells;
- debugf("bank = %d, start = %jx, size = %jx\n", bank,
- (uintmax_t)start, size);
- sc->sc_banks[bank].addr = start + offset;
- sc->sc_banks[bank].size = size;
- /*
- * Attributes for the bank.
- *
- * XXX Note there are no DT bindings defined for them at the
- * moment, so we need to provide some defaults.
- */
- sc->sc_banks[bank].width = 16;
- sc->sc_banks[bank].msel = LBCRES_MSEL_GPCM;
- sc->sc_banks[bank].decc = LBCRES_DECC_DISABLED;
- sc->sc_banks[bank].atom = LBCRES_ATOM_DISABLED;
- sc->sc_banks[bank].wp = 0;
- }
- /*
- * Initialize mem-mappings for the LBC banks (i.e. chip selects).
- */
- error = lbc_banks_map(sc);
- if (error)
- goto fail;
- /*
- * Walk the localbus and add direct subordinates as our children.
- */
- for (child = OF_child(node); child != 0; child = OF_peer(child)) {
- di = malloc(sizeof(*di), M_LBC, M_WAITOK | M_ZERO);
- if (ofw_bus_gen_setup_devinfo(&di->di_ofw, child) != 0) {
- free(di, M_LBC);
- device_printf(dev, "could not set up devinfo\n");
- continue;
- }
- resource_list_init(&di->di_res);
- if (fdt_lbc_reg_decode(child, sc, di)) {
- device_printf(dev, "could not process 'reg' "
- "property\n");
- ofw_bus_gen_destroy_devinfo(&di->di_ofw);
- free(di, M_LBC);
- continue;
- }
- fdt_lbc_fixup(child, sc, di);
- /* Add newbus device for this FDT node */
- cdev = device_add_child(dev, NULL, -1);
- if (cdev == NULL) {
- device_printf(dev, "could not add child: %s\n",
- di->di_ofw.obd_name);
- resource_list_free(&di->di_res);
- ofw_bus_gen_destroy_devinfo(&di->di_ofw);
- free(di, M_LBC);
- continue;
- }
- debugf("added child name='%s', node=%x\n", di->di_ofw.obd_name,
- child);
- device_set_ivars(cdev, di);
- }
- /*
- * Enable the LBC.
- */
- lbc_banks_enable(sc);
- OF_prop_free(rangesptr);
- return (bus_generic_attach(dev));
- fail:
- OF_prop_free(rangesptr);
- bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_mrid, sc->sc_mres);
- return (error);
- }
- static int
- lbc_shutdown(device_t dev)
- {
- /* TODO */
- return(0);
- }
- static struct resource *
- lbc_alloc_resource(device_t bus, device_t child, int type, int *rid,
- rman_res_t start, rman_res_t end, rman_res_t count, u_int flags)
- {
- struct lbc_softc *sc;
- struct lbc_devinfo *di;
- struct resource_list_entry *rle;
- struct resource *res;
- struct rman *rm;
- int needactivate;
- /* We only support default allocations. */
- if (!RMAN_IS_DEFAULT_RANGE(start, end))
- return (NULL);
- sc = device_get_softc(bus);
- if (type == SYS_RES_IRQ)
- return (bus_alloc_resource(bus, type, rid, start, end, count,
- flags));
- /*
- * Request for the default allocation with a given rid: use resource
- * list stored in the local device info.
- */
- if ((di = device_get_ivars(child)) == NULL)
- return (NULL);
- if (type == SYS_RES_IOPORT)
- type = SYS_RES_MEMORY;
- rid = &di->di_bank;
- rle = resource_list_find(&di->di_res, type, *rid);
- if (rle == NULL) {
- device_printf(bus, "no default resources for "
- "rid = %d, type = %d\n", *rid, type);
- return (NULL);
- }
- start = rle->start;
- count = rle->count;
- end = start + count - 1;
- sc = device_get_softc(bus);
- needactivate = flags & RF_ACTIVE;
- flags &= ~RF_ACTIVE;
- rm = &sc->sc_rman;
- res = rman_reserve_resource(rm, start, end, count, flags, child);
- if (res == NULL) {
- device_printf(bus, "failed to reserve resource %#jx - %#jx "
- "(%#jx)\n", start, end, count);
- return (NULL);
- }
- rman_set_rid(res, *rid);
- rman_set_bustag(res, &bs_be_tag);
- rman_set_bushandle(res, rman_get_start(res));
- if (needactivate)
- if (bus_activate_resource(child, type, *rid, res)) {
- device_printf(child, "resource activation failed\n");
- rman_release_resource(res);
- return (NULL);
- }
- return (res);
- }
- static int
- lbc_print_child(device_t dev, device_t child)
- {
- struct lbc_devinfo *di;
- struct resource_list *rl;
- int rv;
- di = device_get_ivars(child);
- rl = &di->di_res;
- rv = 0;
- rv += bus_print_child_header(dev, child);
- rv += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#jx");
- rv += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%jd");
- rv += bus_print_child_footer(dev, child);
- return (rv);
- }
- static int
- lbc_release_resource(device_t dev, device_t child, int type, int rid,
- struct resource *res)
- {
- int err;
- if (rman_get_flags(res) & RF_ACTIVE) {
- err = bus_deactivate_resource(child, type, rid, res);
- if (err)
- return (err);
- }
- return (rman_release_resource(res));
- }
- static int
- lbc_activate_resource(device_t bus __unused, device_t child __unused,
- int type __unused, int rid __unused, struct resource *r)
- {
- /* Child resources were already mapped, just activate. */
- return (rman_activate_resource(r));
- }
- static int
- lbc_deactivate_resource(device_t bus __unused, device_t child __unused,
- int type __unused, int rid __unused, struct resource *r)
- {
- return (rman_deactivate_resource(r));
- }
- static const struct ofw_bus_devinfo *
- lbc_get_devinfo(device_t bus, device_t child)
- {
- struct lbc_devinfo *di;
- di = device_get_ivars(child);
- return (&di->di_ofw);
- }
- void
- lbc_write_reg(device_t child, u_int off, uint32_t val)
- {
- device_t dev;
- struct lbc_softc *sc;
- dev = device_get_parent(child);
- if (off >= 0x1000) {
- device_printf(dev, "%s(%s): invalid offset %#x\n",
- __func__, device_get_nameunit(child), off);
- return;
- }
- sc = device_get_softc(dev);
- if (off == LBC85XX_LTESR && sc->sc_ltesr != ~0u) {
- sc->sc_ltesr ^= (val & sc->sc_ltesr);
- return;
- }
- if (off == LBC85XX_LTEATR && (val & 1) == 0)
- sc->sc_ltesr = ~0u;
- bus_space_write_4(sc->sc_bst, sc->sc_bsh, off, val);
- }
- uint32_t
- lbc_read_reg(device_t child, u_int off)
- {
- device_t dev;
- struct lbc_softc *sc;
- uint32_t val;
- dev = device_get_parent(child);
- if (off >= 0x1000) {
- device_printf(dev, "%s(%s): invalid offset %#x\n",
- __func__, device_get_nameunit(child), off);
- return (~0U);
- }
- sc = device_get_softc(dev);
- if (off == LBC85XX_LTESR && sc->sc_ltesr != ~0U)
- val = sc->sc_ltesr;
- else
- val = bus_space_read_4(sc->sc_bst, sc->sc_bsh, off);
- return (val);
- }
|