2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2015-2016 Landon Fuller <landon@landonf.org>
5 * Copyright (c) 2017 The FreeBSD Foundation
8 * Portions of this software were developed by Landon Fuller
9 * under sponsorship from the FreeBSD Foundation.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
19 * redistribution must be conditioned upon including a substantially
20 * similar Disclaimer requirement for further binary redistribution.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
26 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
27 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
28 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
31 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
33 * THE POSSIBILITY OF SUCH DAMAGES.
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
39 #include <sys/param.h>
41 #include <sys/refcount.h>
42 #include <sys/systm.h>
44 #include <machine/bus.h>
46 #include <machine/resource.h>
48 #include <dev/bhnd/siba/sibareg.h>
50 #include <dev/bhnd/cores/chipc/chipcreg.h>
52 #include "nvram/bhnd_nvram.h"
54 #include "bhnd_chipc_if.h"
56 #include "bhnd_nvram_if.h"
57 #include "bhnd_nvram_map.h"
61 #include "bhnd_private.h"
63 static void bhnd_service_registry_free_entry(
64 struct bhnd_service_entry *entry);
66 static int compare_ascending_probe_order(const void *lhs, const void *rhs);
67 static int compare_descending_probe_order(const void *lhs,
70 /* BHND core device description table. */
71 static const struct bhnd_core_desc {
74 bhnd_devclass_t class;
76 } bhnd_core_descs[] = {
77 #define BHND_CDESC(_mfg, _cid, _cls, _desc) \
78 { BHND_MFGID_ ## _mfg, BHND_COREID_ ## _cid, \
79 BHND_DEVCLASS_ ## _cls, _desc }
81 BHND_CDESC(BCM, CC, CC, "ChipCommon I/O Controller"),
82 BHND_CDESC(BCM, ILINE20, OTHER, "iLine20 HPNA"),
83 BHND_CDESC(BCM, SRAM, RAM, "SRAM"),
84 BHND_CDESC(BCM, SDRAM, RAM, "SDRAM"),
85 BHND_CDESC(BCM, PCI, PCI, "PCI Bridge"),
86 BHND_CDESC(BCM, MIPS, CPU, "BMIPS CPU"),
87 BHND_CDESC(BCM, ENET, ENET_MAC, "Fast Ethernet MAC"),
88 BHND_CDESC(BCM, V90_CODEC, SOFTMODEM, "V.90 SoftModem Codec"),
89 BHND_CDESC(BCM, USB, USB_DUAL, "USB 1.1 Device/Host Controller"),
90 BHND_CDESC(BCM, ADSL, OTHER, "ADSL Core"),
91 BHND_CDESC(BCM, ILINE100, OTHER, "iLine100 HPNA"),
92 BHND_CDESC(BCM, IPSEC, OTHER, "IPsec Accelerator"),
93 BHND_CDESC(BCM, UTOPIA, OTHER, "UTOPIA ATM Core"),
94 BHND_CDESC(BCM, PCMCIA, PCCARD, "PCMCIA Bridge"),
95 BHND_CDESC(BCM, SOCRAM, RAM, "Internal Memory"),
96 BHND_CDESC(BCM, MEMC, MEMC, "MEMC SDRAM Controller"),
97 BHND_CDESC(BCM, OFDM, OTHER, "OFDM PHY"),
98 BHND_CDESC(BCM, EXTIF, OTHER, "External Interface"),
99 BHND_CDESC(BCM, D11, WLAN, "802.11 MAC/PHY/Radio"),
100 BHND_CDESC(BCM, APHY, WLAN_PHY, "802.11a PHY"),
101 BHND_CDESC(BCM, BPHY, WLAN_PHY, "802.11b PHY"),
102 BHND_CDESC(BCM, GPHY, WLAN_PHY, "802.11g PHY"),
103 BHND_CDESC(BCM, MIPS33, CPU, "BMIPS33 CPU"),
104 BHND_CDESC(BCM, USB11H, USB_HOST, "USB 1.1 Host Controller"),
105 BHND_CDESC(BCM, USB11D, USB_DEV, "USB 1.1 Device Controller"),
106 BHND_CDESC(BCM, USB20H, USB_HOST, "USB 2.0 Host Controller"),
107 BHND_CDESC(BCM, USB20D, USB_DEV, "USB 2.0 Device Controller"),
108 BHND_CDESC(BCM, SDIOH, OTHER, "SDIO Host Controller"),
109 BHND_CDESC(BCM, ROBO, OTHER, "RoboSwitch"),
110 BHND_CDESC(BCM, ATA100, OTHER, "Parallel ATA Controller"),
111 BHND_CDESC(BCM, SATAXOR, OTHER, "SATA DMA/XOR Controller"),
112 BHND_CDESC(BCM, GIGETH, ENET_MAC, "Gigabit Ethernet MAC"),
113 BHND_CDESC(BCM, PCIE, PCIE, "PCIe Bridge"),
114 BHND_CDESC(BCM, NPHY, WLAN_PHY, "802.11n 2x2 PHY"),
115 BHND_CDESC(BCM, SRAMC, MEMC, "SRAM Controller"),
116 BHND_CDESC(BCM, MINIMAC, OTHER, "MINI MAC/PHY"),
117 BHND_CDESC(BCM, ARM11, CPU, "ARM1176 CPU"),
118 BHND_CDESC(BCM, ARM7S, CPU, "ARM7TDMI-S CPU"),
119 BHND_CDESC(BCM, LPPHY, WLAN_PHY, "802.11a/b/g PHY"),
120 BHND_CDESC(BCM, PMU, PMU, "PMU"),
121 BHND_CDESC(BCM, SSNPHY, WLAN_PHY, "802.11n Single-Stream PHY"),
122 BHND_CDESC(BCM, SDIOD, OTHER, "SDIO Device Core"),
123 BHND_CDESC(BCM, ARMCM3, CPU, "ARM Cortex-M3 CPU"),
124 BHND_CDESC(BCM, HTPHY, WLAN_PHY, "802.11n 4x4 PHY"),
125 BHND_CDESC(MIPS,MIPS74K, CPU, "MIPS74k CPU"),
126 BHND_CDESC(BCM, GMAC, ENET_MAC, "Gigabit MAC core"),
127 BHND_CDESC(BCM, DMEMC, MEMC, "DDR1/DDR2 Memory Controller"),
128 BHND_CDESC(BCM, PCIERC, OTHER, "PCIe Root Complex"),
129 BHND_CDESC(BCM, OCP, SOC_BRIDGE, "OCP to OCP Bridge"),
130 BHND_CDESC(BCM, SC, OTHER, "Shared Common Core"),
131 BHND_CDESC(BCM, AHB, SOC_BRIDGE, "OCP to AHB Bridge"),
132 BHND_CDESC(BCM, SPIH, OTHER, "SPI Host Controller"),
133 BHND_CDESC(BCM, I2S, OTHER, "I2S Digital Audio Interface"),
134 BHND_CDESC(BCM, DMEMS, MEMC, "SDR/DDR1 Memory Controller"),
135 BHND_CDESC(BCM, UBUS_SHIM, OTHER, "BCM6362/UBUS WLAN SHIM"),
136 BHND_CDESC(BCM, PCIE2, PCIE, "PCIe Bridge (Gen2)"),
138 BHND_CDESC(ARM, APB_BRIDGE, SOC_BRIDGE, "BP135 AMBA3 AXI to APB Bridge"),
139 BHND_CDESC(ARM, PL301, SOC_ROUTER, "PL301 AMBA3 Interconnect"),
140 BHND_CDESC(ARM, EROM, EROM, "PL366 Device Enumeration ROM"),
141 BHND_CDESC(ARM, OOB_ROUTER, OTHER, "PL367 OOB Interrupt Router"),
142 BHND_CDESC(ARM, AXI_UNMAPPED, OTHER, "Unmapped Address Ranges"),
144 BHND_CDESC(BCM, 4706_CC, CC, "ChipCommon I/O Controller"),
145 BHND_CDESC(BCM, NS_PCIE2, PCIE, "PCIe Bridge (Gen2)"),
146 BHND_CDESC(BCM, NS_DMA, OTHER, "DMA engine"),
147 BHND_CDESC(BCM, NS_SDIO, OTHER, "SDIO 3.0 Host Controller"),
148 BHND_CDESC(BCM, NS_USB20H, USB_HOST, "USB 2.0 Host Controller"),
149 BHND_CDESC(BCM, NS_USB30H, USB_HOST, "USB 3.0 Host Controller"),
150 BHND_CDESC(BCM, NS_A9JTAG, OTHER, "ARM Cortex A9 JTAG Interface"),
151 BHND_CDESC(BCM, NS_DDR23_MEMC, MEMC, "Denali DDR2/DD3 Memory Controller"),
152 BHND_CDESC(BCM, NS_ROM, NVRAM, "System ROM"),
153 BHND_CDESC(BCM, NS_NAND, NVRAM, "NAND Flash Controller"),
154 BHND_CDESC(BCM, NS_QSPI, NVRAM, "QSPI Flash Controller"),
155 BHND_CDESC(BCM, NS_CC_B, CC_B, "ChipCommon B Auxiliary I/O Controller"),
156 BHND_CDESC(BCM, 4706_SOCRAM, RAM, "Internal Memory"),
157 BHND_CDESC(BCM, IHOST_ARMCA9, CPU, "ARM Cortex A9 CPU"),
158 BHND_CDESC(BCM, 4706_GMAC_CMN, ENET, "Gigabit MAC (Common)"),
159 BHND_CDESC(BCM, 4706_GMAC, ENET_MAC, "Gigabit MAC"),
160 BHND_CDESC(BCM, AMEMC, MEMC, "Denali DDR1/DDR2 Memory Controller"),
163 /* Derived from inspection of the BCM4331 cores that provide PrimeCell
164 * IDs. Due to lack of documentation, the surmised device name/purpose
165 * provided here may be incorrect. */
166 { BHND_MFGID_ARM, BHND_PRIMEID_EROM, BHND_DEVCLASS_OTHER,
167 "PL364 Device Enumeration ROM" },
168 { BHND_MFGID_ARM, BHND_PRIMEID_SWRAP, BHND_DEVCLASS_OTHER,
169 "PL368 Device Management Interface" },
170 { BHND_MFGID_ARM, BHND_PRIMEID_MWRAP, BHND_DEVCLASS_OTHER,
171 "PL369 Device Management Interface" },
175 static const struct bhnd_device_quirk bhnd_chipc_clkctl_quirks[];
176 static const struct bhnd_device_quirk bhnd_pcmcia_clkctl_quirks[];
179 * Device table entries for core-specific CLKCTL quirk lookup.
181 static const struct bhnd_device bhnd_clkctl_devices[] = {
182 BHND_DEVICE(BCM, CC, NULL, bhnd_chipc_clkctl_quirks),
183 BHND_DEVICE(BCM, PCMCIA, NULL, bhnd_pcmcia_clkctl_quirks),
187 /** ChipCommon CLKCTL quirks */
188 static const struct bhnd_device_quirk bhnd_chipc_clkctl_quirks[] = {
189 /* HTAVAIL/ALPAVAIL are bitswapped in chipc's CLKCTL */
190 BHND_CHIP_QUIRK(4328, HWREV_ANY, BHND_CLKCTL_QUIRK_CCS0),
191 BHND_CHIP_QUIRK(5354, HWREV_ANY, BHND_CLKCTL_QUIRK_CCS0),
192 BHND_DEVICE_QUIRK_END
195 /** PCMCIA CLKCTL quirks */
196 static const struct bhnd_device_quirk bhnd_pcmcia_clkctl_quirks[] = {
197 /* HTAVAIL/ALPAVAIL are bitswapped in pcmcia's CLKCTL */
198 BHND_CHIP_QUIRK(4328, HWREV_ANY, BHND_CLKCTL_QUIRK_CCS0),
199 BHND_CHIP_QUIRK(5354, HWREV_ANY, BHND_CLKCTL_QUIRK_CCS0),
200 BHND_DEVICE_QUIRK_END
204 * Return the name for a given JEP106 manufacturer ID.
206 * @param vendor A JEP106 Manufacturer ID, including the non-standard ARM 4-bit
207 * JEP106 continuation code.
210 bhnd_vendor_name(uint16_t vendor)
217 case BHND_MFGID_MIPS:
225 * Return the name of a port type.
227 * @param port_type The port type to look up.
230 bhnd_port_type_name(bhnd_port_type port_type)
233 case BHND_PORT_DEVICE:
235 case BHND_PORT_BRIDGE:
237 case BHND_PORT_AGENT:
245 * Return the name of an NVRAM source.
247 * @param nvram_src The NVRAM source type to look up.
250 bhnd_nvram_src_name(bhnd_nvram_src nvram_src)
253 case BHND_NVRAM_SRC_FLASH:
255 case BHND_NVRAM_SRC_OTP:
257 case BHND_NVRAM_SRC_SPROM:
259 case BHND_NVRAM_SRC_UNKNOWN:
266 static const struct bhnd_core_desc *
267 bhnd_find_core_desc(uint16_t vendor, uint16_t device)
269 for (u_int i = 0; bhnd_core_descs[i].desc != NULL; i++) {
270 if (bhnd_core_descs[i].vendor != vendor)
273 if (bhnd_core_descs[i].device != device)
276 return (&bhnd_core_descs[i]);
283 * Return a human-readable name for a BHND core.
285 * @param vendor The core designer's JEDEC-106 Manufacturer ID.
286 * @param device The core identifier.
289 bhnd_find_core_name(uint16_t vendor, uint16_t device)
291 const struct bhnd_core_desc *desc;
293 if ((desc = bhnd_find_core_desc(vendor, device)) == NULL)
300 * Return the device class for a BHND core.
302 * @param vendor The core designer's JEDEC-106 Manufacturer ID.
303 * @param device The core identifier.
306 bhnd_find_core_class(uint16_t vendor, uint16_t device)
308 const struct bhnd_core_desc *desc;
310 if ((desc = bhnd_find_core_desc(vendor, device)) == NULL)
311 return (BHND_DEVCLASS_OTHER);
317 * Return a human-readable name for a BHND core.
319 * @param ci The core's info record.
322 bhnd_core_name(const struct bhnd_core_info *ci)
324 return bhnd_find_core_name(ci->vendor, ci->device);
328 * Return the device class for a BHND core.
330 * @param ci The core's info record.
333 bhnd_core_class(const struct bhnd_core_info *ci)
335 return bhnd_find_core_class(ci->vendor, ci->device);
339 * Write a human readable name representation of the given
340 * BHND_CHIPID_* constant to @p buffer.
342 * @param buffer Output buffer, or NULL to compute the required size.
343 * @param size Capacity of @p buffer, in bytes.
344 * @param chip_id Chip ID to be formatted.
346 * @return The required number of bytes on success, or a negative integer on
347 * failure. No more than @p size-1 characters be written, with the @p size'th
350 * @sa BHND_CHIPID_MAX_NAMELEN
353 bhnd_format_chip_id(char *buffer, size_t size, uint16_t chip_id)
355 /* All hex formatted IDs are within the range of 0x4000-0x9C3F (40000-1) */
356 if (chip_id >= 0x4000 && chip_id <= 0x9C3F)
357 return (snprintf(buffer, size, "BCM%hX", chip_id));
359 return (snprintf(buffer, size, "BCM%hu", chip_id));
363 * Return a core info record populated from a bhnd-attached @p dev.
365 * @param dev A bhnd device.
367 * @return A core info record for @p dev.
369 struct bhnd_core_info
370 bhnd_get_core_info(device_t dev) {
371 return (struct bhnd_core_info) {
372 .vendor = bhnd_get_vendor(dev),
373 .device = bhnd_get_device(dev),
374 .hwrev = bhnd_get_hwrev(dev),
375 .core_idx = bhnd_get_core_index(dev),
376 .unit = bhnd_get_core_unit(dev)
381 * Find a @p class child device with @p unit on @p bus.
383 * @param bus The bhnd-compatible bus to be searched.
384 * @param class The device class to match on.
385 * @param unit The core unit number; specify -1 to return the first match
386 * regardless of unit number.
388 * @retval device_t if a matching child device is found.
389 * @retval NULL if no matching child device is found.
392 bhnd_bus_find_child(device_t bus, bhnd_devclass_t class, int unit)
394 struct bhnd_core_match md = {
395 BHND_MATCH_CORE_CLASS(class),
396 BHND_MATCH_CORE_UNIT(unit)
400 md.m.match.core_unit = 0;
402 return bhnd_bus_match_child(bus, &md);
406 * Find the first child device on @p bus that matches @p desc.
408 * @param bus The bhnd-compatible bus to be searched.
409 * @param desc A match descriptor.
411 * @retval device_t if a matching child device is found.
412 * @retval NULL if no matching child device is found.
415 bhnd_bus_match_child(device_t bus, const struct bhnd_core_match *desc)
422 error = device_get_children(bus, &devlistp, &devcnt);
427 for (int i = 0; i < devcnt; i++) {
428 struct bhnd_core_info ci = bhnd_get_core_info(devlistp[i]);
430 if (bhnd_core_matches(&ci, desc)) {
437 free(devlistp, M_TEMP);
442 * Retrieve an ordered list of all device instances currently connected to
443 * @p bus, returning a pointer to the array in @p devlistp and the count
446 * The memory allocated for the table must be freed via
447 * bhnd_bus_free_children().
449 * @param bus The bhnd-compatible bus to be queried.
450 * @param[out] devlist The array of devices.
451 * @param[out] devcount The number of devices in @p devlistp
452 * @param order The order in which devices will be returned
456 * @retval non-zero if an error occurs, a regular unix error code will
460 bhnd_bus_get_children(device_t bus, device_t **devlist, int *devcount,
461 bhnd_device_order order)
465 /* Fetch device array */
466 if ((error = device_get_children(bus, devlist, devcount)))
469 /* Perform requested sorting */
470 if ((error = bhnd_sort_devices(*devlist, *devcount, order))) {
471 bhnd_bus_free_children(*devlist);
479 * Free any memory allocated in a previous call to bhnd_bus_get_children().
481 * @param devlist The device array returned by bhnd_bus_get_children().
484 bhnd_bus_free_children(device_t *devlist)
486 free(devlist, M_TEMP);
490 * Perform in-place sorting of an array of bhnd device instances.
492 * @param devlist An array of bhnd devices.
493 * @param devcount The number of devices in @p devs.
494 * @param order The sort order to be used.
497 * @retval EINVAL if the sort order is unknown.
500 bhnd_sort_devices(device_t *devlist, size_t devcount, bhnd_device_order order)
502 int (*compare)(const void *, const void *);
505 case BHND_DEVICE_ORDER_ATTACH:
506 compare = compare_ascending_probe_order;
508 case BHND_DEVICE_ORDER_DETACH:
509 compare = compare_descending_probe_order;
512 printf("unknown sort order: %d\n", order);
516 qsort(devlist, devcount, sizeof(*devlist), compare);
521 * Ascending comparison of bhnd device's probe order.
524 compare_ascending_probe_order(const void *lhs, const void *rhs)
529 ldev = (*(const device_t *) lhs);
530 rdev = (*(const device_t *) rhs);
532 lorder = BHND_BUS_GET_PROBE_ORDER(device_get_parent(ldev), ldev);
533 rorder = BHND_BUS_GET_PROBE_ORDER(device_get_parent(rdev), rdev);
535 if (lorder < rorder) {
537 } else if (lorder > rorder) {
545 * Descending comparison of bhnd device's probe order.
548 compare_descending_probe_order(const void *lhs, const void *rhs)
550 return (compare_ascending_probe_order(rhs, lhs));
554 * Call device_probe_and_attach() for each of the bhnd bus device's
555 * children, in bhnd attach order.
557 * @param bus The bhnd-compatible bus for which all children should be probed
561 bhnd_bus_probe_children(device_t bus)
567 /* Fetch children in attach order */
568 error = bhnd_bus_get_children(bus, &devs, &ndevs,
569 BHND_DEVICE_ORDER_ATTACH);
573 /* Probe and attach all children */
574 for (int i = 0; i < ndevs; i++) {
575 device_t child = devs[i];
576 device_probe_and_attach(child);
579 bhnd_bus_free_children(devs);
585 * Walk up the bhnd device hierarchy to locate the root device
586 * to which the bhndb bridge is attached.
588 * This can be used from within bhnd host bridge drivers to locate the
589 * actual upstream host device.
591 * @param dev A bhnd device.
592 * @param bus_class The expected bus (e.g. "pci") to which the bridge root
593 * should be attached.
595 * @retval device_t if a matching parent device is found.
596 * @retval NULL if @p dev is not attached via a bhndb bus.
597 * @retval NULL if no parent device is attached via @p bus_class.
600 bhnd_find_bridge_root(device_t dev, devclass_t bus_class)
602 devclass_t bhndb_class;
605 KASSERT(device_get_devclass(device_get_parent(dev)) ==
606 devclass_find("bhnd"),
607 ("%s not a bhnd device", device_get_nameunit(dev)));
609 bhndb_class = devclass_find("bhndb");
611 /* Walk the device tree until we hit a bridge */
613 while ((parent = device_get_parent(parent)) != NULL) {
614 if (device_get_devclass(parent) == bhndb_class)
622 /* Search for a parent attached to the expected bus class */
623 while ((parent = device_get_parent(parent)) != NULL) {
626 bus = device_get_parent(parent);
627 if (bus != NULL && device_get_devclass(bus) == bus_class)
636 * Find the first core in @p cores that matches @p desc.
638 * @param cores The table to search.
639 * @param num_cores The length of @p cores.
640 * @param desc A match descriptor.
642 * @retval bhnd_core_info if a matching core is found.
643 * @retval NULL if no matching core is found.
645 const struct bhnd_core_info *
646 bhnd_match_core(const struct bhnd_core_info *cores, u_int num_cores,
647 const struct bhnd_core_match *desc)
649 for (u_int i = 0; i < num_cores; i++) {
650 if (bhnd_core_matches(&cores[i], desc))
658 * Find the first core in @p cores with the given @p class.
660 * @param cores The table to search.
661 * @param num_cores The length of @p cores.
662 * @param class The device class to match on.
664 * @retval non-NULL if a matching core is found.
665 * @retval NULL if no matching core is found.
667 const struct bhnd_core_info *
668 bhnd_find_core(const struct bhnd_core_info *cores, u_int num_cores,
669 bhnd_devclass_t class)
671 struct bhnd_core_match md = {
672 BHND_MATCH_CORE_CLASS(class)
675 return bhnd_match_core(cores, num_cores, &md);
679 * Create an equality match descriptor for @p core.
681 * @param core The core info to be matched on.
683 * @return an equality match descriptor for @p core.
685 struct bhnd_core_match
686 bhnd_core_get_match_desc(const struct bhnd_core_info *core)
688 return ((struct bhnd_core_match) {
689 BHND_MATCH_CORE_VENDOR(core->vendor),
690 BHND_MATCH_CORE_ID(core->device),
691 BHND_MATCH_CORE_REV(HWREV_EQ(core->hwrev)),
692 BHND_MATCH_CORE_CLASS(bhnd_core_class(core)),
693 BHND_MATCH_CORE_IDX(core->core_idx),
694 BHND_MATCH_CORE_UNIT(core->unit)
699 * Return true if the @p lhs is equal to @p rhs.
701 * @param lhs The first bhnd core descriptor to compare.
702 * @param rhs The second bhnd core descriptor to compare.
704 * @retval true if @p lhs is equal to @p rhs
705 * @retval false if @p lhs is not equal to @p rhs
708 bhnd_cores_equal(const struct bhnd_core_info *lhs,
709 const struct bhnd_core_info *rhs)
711 struct bhnd_core_match md;
713 /* Use an equality match descriptor to perform the comparison */
714 md = bhnd_core_get_match_desc(rhs);
715 return (bhnd_core_matches(lhs, &md));
719 * Return true if the @p core matches @p desc.
721 * @param core A bhnd core descriptor.
722 * @param desc A match descriptor to compare against @p core.
724 * @retval true if @p core matches @p match.
725 * @retval false if @p core does not match @p match.
728 bhnd_core_matches(const struct bhnd_core_info *core,
729 const struct bhnd_core_match *desc)
731 if (desc->m.match.core_vendor && desc->core_vendor != core->vendor)
734 if (desc->m.match.core_id && desc->core_id != core->device)
737 if (desc->m.match.core_unit && desc->core_unit != core->unit)
740 if (desc->m.match.core_rev &&
741 !bhnd_hwrev_matches(core->hwrev, &desc->core_rev))
744 if (desc->m.match.core_idx && desc->core_idx != core->core_idx)
747 if (desc->m.match.core_class &&
748 desc->core_class != bhnd_core_class(core))
755 * Return true if the @p chip matches @p desc.
757 * @param chip A bhnd chip identifier.
758 * @param desc A match descriptor to compare against @p chip.
760 * @retval true if @p chip matches @p match.
761 * @retval false if @p chip does not match @p match.
764 bhnd_chip_matches(const struct bhnd_chipid *chip,
765 const struct bhnd_chip_match *desc)
767 if (desc->m.match.chip_id && chip->chip_id != desc->chip_id)
770 if (desc->m.match.chip_pkg && chip->chip_pkg != desc->chip_pkg)
773 if (desc->m.match.chip_rev &&
774 !bhnd_hwrev_matches(chip->chip_rev, &desc->chip_rev))
777 if (desc->m.match.chip_type && chip->chip_type != desc->chip_type)
784 * Return true if the @p board matches @p desc.
786 * @param board The bhnd board info.
787 * @param desc A match descriptor to compare against @p board.
789 * @retval true if @p chip matches @p match.
790 * @retval false if @p chip does not match @p match.
793 bhnd_board_matches(const struct bhnd_board_info *board,
794 const struct bhnd_board_match *desc)
796 if (desc->m.match.board_srom_rev &&
797 !bhnd_hwrev_matches(board->board_srom_rev, &desc->board_srom_rev))
800 if (desc->m.match.board_vendor &&
801 board->board_vendor != desc->board_vendor)
804 if (desc->m.match.board_type && board->board_type != desc->board_type)
807 if (desc->m.match.board_devid &&
808 board->board_devid != desc->board_devid)
811 if (desc->m.match.board_rev &&
812 !bhnd_hwrev_matches(board->board_rev, &desc->board_rev))
819 * Return true if the @p hwrev matches @p desc.
821 * @param hwrev A bhnd hardware revision.
822 * @param desc A match descriptor to compare against @p core.
824 * @retval true if @p hwrev matches @p match.
825 * @retval false if @p hwrev does not match @p match.
828 bhnd_hwrev_matches(uint16_t hwrev, const struct bhnd_hwrev_match *desc)
830 if (desc->start != BHND_HWREV_INVALID &&
834 if (desc->end != BHND_HWREV_INVALID &&
842 * Return true if the @p dev matches @p desc.
844 * @param dev A bhnd device.
845 * @param desc A match descriptor to compare against @p dev.
847 * @retval true if @p dev matches @p match.
848 * @retval false if @p dev does not match @p match.
851 bhnd_device_matches(device_t dev, const struct bhnd_device_match *desc)
853 struct bhnd_core_info core;
854 const struct bhnd_chipid *chip;
855 struct bhnd_board_info board;
859 /* Construct individual match descriptors */
860 struct bhnd_core_match m_core = { _BHND_CORE_MATCH_COPY(desc) };
861 struct bhnd_chip_match m_chip = { _BHND_CHIP_MATCH_COPY(desc) };
862 struct bhnd_board_match m_board = { _BHND_BOARD_MATCH_COPY(desc) };
864 /* Fetch and match core info */
865 if (m_core.m.match_flags) {
866 /* Only applicable to bhnd-attached cores */
867 parent = device_get_parent(dev);
868 if (device_get_devclass(parent) != devclass_find("bhnd")) {
869 device_printf(dev, "attempting to match core "
870 "attributes against non-core device\n");
874 core = bhnd_get_core_info(dev);
875 if (!bhnd_core_matches(&core, &m_core))
879 /* Fetch and match chip info */
880 if (m_chip.m.match_flags) {
881 chip = bhnd_get_chipid(dev);
883 if (!bhnd_chip_matches(chip, &m_chip))
887 /* Fetch and match board info.
889 * This is not available until after NVRAM is up; earlier device
890 * matches should not include board requirements */
891 if (m_board.m.match_flags) {
892 if ((error = bhnd_read_board_info(dev, &board))) {
893 device_printf(dev, "failed to read required board info "
894 "during device matching: %d\n", error);
898 if (!bhnd_board_matches(&board, &m_board))
907 * Search @p table for an entry matching @p dev.
909 * @param dev A bhnd device to match against @p table.
910 * @param table The device table to search.
911 * @param entry_size The @p table entry size, in bytes.
913 * @retval non-NULL the first matching device, if any.
914 * @retval NULL if no matching device is found in @p table.
916 const struct bhnd_device *
917 bhnd_device_lookup(device_t dev, const struct bhnd_device *table,
920 const struct bhnd_device *entry;
921 device_t hostb, parent;
922 bhnd_attach_type attach_type;
925 parent = device_get_parent(dev);
926 hostb = bhnd_bus_find_hostb_device(parent);
927 attach_type = bhnd_get_attach_type(dev);
929 for (entry = table; !BHND_DEVICE_IS_END(entry); entry =
930 (const struct bhnd_device *) ((const char *) entry + entry_size))
932 /* match core info */
933 if (!bhnd_device_matches(dev, &entry->core))
936 /* match device flags */
937 dflags = entry->device_flags;
939 /* hostb implies BHND_ATTACH_ADAPTER requirement */
940 if (dflags & BHND_DF_HOSTB)
941 dflags |= BHND_DF_ADAPTER;
943 if (dflags & BHND_DF_ADAPTER)
944 if (attach_type != BHND_ATTACH_ADAPTER)
947 if (dflags & BHND_DF_HOSTB)
951 if (dflags & BHND_DF_SOC)
952 if (attach_type != BHND_ATTACH_NATIVE)
964 * Scan the device @p table for all quirk flags applicable to @p dev.
966 * @param dev A bhnd device to match against @p table.
967 * @param table The device table to search.
968 * @param entry_size The @p table entry size, in bytes.
970 * @return all matching quirk flags.
973 bhnd_device_quirks(device_t dev, const struct bhnd_device *table,
976 const struct bhnd_device *dent;
977 const struct bhnd_device_quirk *qent, *qtable;
980 /* Locate the device entry */
981 if ((dent = bhnd_device_lookup(dev, table, entry_size)) == NULL)
984 /* Quirks table is optional */
985 qtable = dent->quirks_table;
989 /* Collect matching device quirk entries */
991 for (qent = qtable; !BHND_DEVICE_QUIRK_IS_END(qent); qent++) {
992 if (bhnd_device_matches(dev, &qent->desc))
993 quirks |= qent->quirks;
1000 * Allocate bhnd(4) resources defined in @p rs from a parent bus.
1002 * @param dev The device requesting ownership of the resources.
1003 * @param rs A standard bus resource specification. This will be updated
1004 * with the allocated resource's RIDs.
1005 * @param res On success, the allocated bhnd resources.
1008 * @retval non-zero if allocation of any non-RF_OPTIONAL resource fails,
1009 * all allocated resources will be released and a regular
1010 * unix error code will be returned.
1013 bhnd_alloc_resources(device_t dev, struct resource_spec *rs,
1014 struct bhnd_resource **res)
1016 /* Initialize output array */
1017 for (u_int i = 0; rs[i].type != -1; i++)
1020 for (u_int i = 0; rs[i].type != -1; i++) {
1021 res[i] = bhnd_alloc_resource_any(dev, rs[i].type, &rs[i].rid,
1024 /* Clean up all allocations on failure */
1025 if (res[i] == NULL && !(rs[i].flags & RF_OPTIONAL)) {
1026 bhnd_release_resources(dev, rs, res);
1035 * Release bhnd(4) resources defined in @p rs from a parent bus.
1037 * @param dev The device that owns the resources.
1038 * @param rs A standard bus resource specification previously initialized
1039 * by @p bhnd_alloc_resources.
1040 * @param res The bhnd resources to be released.
1043 bhnd_release_resources(device_t dev, const struct resource_spec *rs,
1044 struct bhnd_resource **res)
1046 for (u_int i = 0; rs[i].type != -1; i++) {
1050 bhnd_release_resource(dev, rs[i].type, rs[i].rid, res[i]);
1056 * Allocate and return a new per-core PMU clock control/status (clkctl)
1057 * instance for @p dev.
1059 * @param dev The bhnd(4) core device mapped by @p r.
1060 * @param pmu_dev The bhnd(4) PMU device, implmenting the bhnd_pmu_if
1061 * interface. The caller is responsible for ensuring that
1062 * this reference remains valid for the lifetime of the
1063 * returned clkctl instance.
1064 * @param r A resource mapping the core's clock control register
1065 * (see BHND_CLK_CTL_ST). The caller is responsible for
1066 * ensuring that this resource remains valid for the
1067 * lifetime of the returned clkctl instance.
1068 * @param offset The offset to the clock control register within @p r.
1069 * @param max_latency The PMU's maximum state transition latency in
1070 * microseconds; this upper bound will be used to busy-wait
1071 * on PMU state transitions.
1073 * @retval non-NULL success
1074 * @retval NULL if allocation fails.
1077 struct bhnd_core_clkctl *
1078 bhnd_alloc_core_clkctl(device_t dev, device_t pmu_dev, struct bhnd_resource *r,
1079 bus_size_t offset, u_int max_latency)
1081 struct bhnd_core_clkctl *clkctl;
1083 clkctl = malloc(sizeof(*clkctl), M_BHND, M_ZERO | M_NOWAIT);
1087 clkctl->cc_dev = dev;
1088 clkctl->cc_pmu_dev = pmu_dev;
1090 clkctl->cc_res_offset = offset;
1091 clkctl->cc_max_latency = max_latency;
1092 clkctl->cc_quirks = bhnd_device_quirks(dev, bhnd_clkctl_devices,
1093 sizeof(bhnd_clkctl_devices[0]));
1095 BHND_CLKCTL_LOCK_INIT(clkctl);
1101 * Free a clkctl instance previously allocated via bhnd_alloc_core_clkctl().
1103 * @param clkctl The clkctl instance to be freed.
1106 bhnd_free_core_clkctl(struct bhnd_core_clkctl *clkctl)
1108 BHND_CLKCTL_LOCK_DESTROY(clkctl);
1110 free(clkctl, M_BHND);
1114 * Wait for the per-core clock status to be equal to @p value after
1115 * applying @p mask, timing out after the maximum transition latency is reached.
1117 * @param clkctl Per-core clkctl state to be queryied.
1118 * @param value Value to wait for.
1119 * @param mask Mask to apply prior to value comparison.
1122 * @retval ETIMEDOUT if the PMU's maximum transition delay is reached before
1123 * the clock status matches @p value and @p mask.
1126 bhnd_core_clkctl_wait(struct bhnd_core_clkctl *clkctl, uint32_t value,
1131 BHND_CLKCTL_LOCK_ASSERT(clkctl, MA_OWNED);
1133 /* Bitswapped HTAVAIL/ALPAVAIL work-around */
1134 if (clkctl->cc_quirks & BHND_CLKCTL_QUIRK_CCS0) {
1135 uint32_t fmask, fval;
1137 fmask = mask & ~(BHND_CCS_HTAVAIL | BHND_CCS_ALPAVAIL);
1138 fval = value & ~(BHND_CCS_HTAVAIL | BHND_CCS_ALPAVAIL);
1140 if (mask & BHND_CCS_HTAVAIL)
1141 fmask |= BHND_CCS0_HTAVAIL;
1142 if (value & BHND_CCS_HTAVAIL)
1143 fval |= BHND_CCS0_HTAVAIL;
1145 if (mask & BHND_CCS_ALPAVAIL)
1146 fmask |= BHND_CCS0_ALPAVAIL;
1147 if (value & BHND_CCS_ALPAVAIL)
1148 fval |= BHND_CCS0_ALPAVAIL;
1154 for (u_int i = 0; i < clkctl->cc_max_latency; i += 10) {
1155 clkst = bhnd_bus_read_4(clkctl->cc_res, clkctl->cc_res_offset);
1156 if ((clkst & mask) == (value & mask))
1162 device_printf(clkctl->cc_dev, "clkst wait timeout (value=%#x, "
1163 "mask=%#x)\n", value, mask);
1169 * Read an NVRAM variable's NUL-terminated string value.
1171 * @param dev A bhnd bus child device.
1172 * @param name The NVRAM variable name.
1173 * @param[out] buf A buffer large enough to hold @p len bytes. On
1174 * success, the NUL-terminated string value will be
1175 * written to this buffer. This argment may be NULL if
1176 * the value is not desired.
1177 * @param len The maximum capacity of @p buf.
1178 * @param[out] rlen On success, will be set to the actual size of
1179 * the requested value (including NUL termination). This
1180 * argment may be NULL if the size is not desired.
1183 * @retval ENOENT The requested variable was not found.
1184 * @retval ENODEV No valid NVRAM source could be found.
1185 * @retval ENOMEM If @p buf is non-NULL and a buffer of @p len is too
1186 * small to hold the requested value.
1187 * @retval EFTYPE If the variable data cannot be coerced to a valid
1188 * string representation.
1189 * @retval ERANGE If value coercion would overflow @p type.
1190 * @retval non-zero If reading @p name otherwise fails, a regular unix
1191 * error code will be returned.
1194 bhnd_nvram_getvar_str(device_t dev, const char *name, char *buf, size_t len,
1201 error = bhnd_nvram_getvar(dev, name, buf, &larg,
1202 BHND_NVRAM_TYPE_STRING);
1210 * Read an NVRAM variable's unsigned integer value.
1212 * @param dev A bhnd bus child device.
1213 * @param name The NVRAM variable name.
1214 * @param[out] value On success, the requested value will be written
1216 * @param width The output integer type width (1, 2, or
1220 * @retval ENOENT The requested variable was not found.
1221 * @retval ENODEV No valid NVRAM source could be found.
1222 * @retval EFTYPE If the variable data cannot be coerced to a
1223 * a valid unsigned integer representation.
1224 * @retval ERANGE If value coercion would overflow (or underflow) an
1225 * unsigned representation of the given @p width.
1226 * @retval non-zero If reading @p name otherwise fails, a regular unix
1227 * error code will be returned.
1230 bhnd_nvram_getvar_uint(device_t dev, const char *name, void *value, int width)
1232 bhnd_nvram_type type;
1237 type = BHND_NVRAM_TYPE_UINT8;
1240 type = BHND_NVRAM_TYPE_UINT16;
1243 type = BHND_NVRAM_TYPE_UINT32;
1246 device_printf(dev, "unsupported NVRAM integer width: %d\n",
1252 return (bhnd_nvram_getvar(dev, name, value, &len, type));
1256 * Read an NVRAM variable's unsigned 8-bit integer value.
1258 * @param dev A bhnd bus child device.
1259 * @param name The NVRAM variable name.
1260 * @param[out] value On success, the requested value will be written
1264 * @retval ENOENT The requested variable was not found.
1265 * @retval ENODEV No valid NVRAM source could be found.
1266 * @retval EFTYPE If the variable data cannot be coerced to a
1267 * a valid unsigned integer representation.
1268 * @retval ERANGE If value coercion would overflow (or underflow) uint8_t.
1269 * @retval non-zero If reading @p name otherwise fails, a regular unix
1270 * error code will be returned.
1273 bhnd_nvram_getvar_uint8(device_t dev, const char *name, uint8_t *value)
1275 return (bhnd_nvram_getvar_uint(dev, name, value, sizeof(*value)));
1279 * Read an NVRAM variable's unsigned 16-bit integer value.
1281 * @param dev A bhnd bus child device.
1282 * @param name The NVRAM variable name.
1283 * @param[out] value On success, the requested value will be written
1287 * @retval ENOENT The requested variable was not found.
1288 * @retval ENODEV No valid NVRAM source could be found.
1289 * @retval EFTYPE If the variable data cannot be coerced to a
1290 * a valid unsigned integer representation.
1291 * @retval ERANGE If value coercion would overflow (or underflow)
1293 * @retval non-zero If reading @p name otherwise fails, a regular unix
1294 * error code will be returned.
1297 bhnd_nvram_getvar_uint16(device_t dev, const char *name, uint16_t *value)
1299 return (bhnd_nvram_getvar_uint(dev, name, value, sizeof(*value)));
1303 * Read an NVRAM variable's unsigned 32-bit integer value.
1305 * @param dev A bhnd bus child device.
1306 * @param name The NVRAM variable name.
1307 * @param[out] value On success, the requested value will be written
1311 * @retval ENOENT The requested variable was not found.
1312 * @retval ENODEV No valid NVRAM source could be found.
1313 * @retval EFTYPE If the variable data cannot be coerced to a
1314 * a valid unsigned integer representation.
1315 * @retval ERANGE If value coercion would overflow (or underflow)
1317 * @retval non-zero If reading @p name otherwise fails, a regular unix
1318 * error code will be returned.
1321 bhnd_nvram_getvar_uint32(device_t dev, const char *name, uint32_t *value)
1323 return (bhnd_nvram_getvar_uint(dev, name, value, sizeof(*value)));
1327 * Read an NVRAM variable's signed integer value.
1329 * @param dev A bhnd bus child device.
1330 * @param name The NVRAM variable name.
1331 * @param[out] value On success, the requested value will be written
1333 * @param width The output integer type width (1, 2, or
1337 * @retval ENOENT The requested variable was not found.
1338 * @retval ENODEV No valid NVRAM source could be found.
1339 * @retval EFTYPE If the variable data cannot be coerced to a
1340 * a valid integer representation.
1341 * @retval ERANGE If value coercion would overflow (or underflow) an
1342 * signed representation of the given @p width.
1343 * @retval non-zero If reading @p name otherwise fails, a regular unix
1344 * error code will be returned.
1347 bhnd_nvram_getvar_int(device_t dev, const char *name, void *value, int width)
1349 bhnd_nvram_type type;
1354 type = BHND_NVRAM_TYPE_INT8;
1357 type = BHND_NVRAM_TYPE_INT16;
1360 type = BHND_NVRAM_TYPE_INT32;
1363 device_printf(dev, "unsupported NVRAM integer width: %d\n",
1369 return (bhnd_nvram_getvar(dev, name, value, &len, type));
1373 * Read an NVRAM variable's signed 8-bit integer value.
1375 * @param dev A bhnd bus child device.
1376 * @param name The NVRAM variable name.
1377 * @param[out] value On success, the requested value will be written
1381 * @retval ENOENT The requested variable was not found.
1382 * @retval ENODEV No valid NVRAM source could be found.
1383 * @retval EFTYPE If the variable data cannot be coerced to a
1384 * a valid integer representation.
1385 * @retval ERANGE If value coercion would overflow (or underflow) int8_t.
1386 * @retval non-zero If reading @p name otherwise fails, a regular unix
1387 * error code will be returned.
1390 bhnd_nvram_getvar_int8(device_t dev, const char *name, int8_t *value)
1392 return (bhnd_nvram_getvar_int(dev, name, value, sizeof(*value)));
1396 * Read an NVRAM variable's signed 16-bit integer value.
1398 * @param dev A bhnd bus child device.
1399 * @param name The NVRAM variable name.
1400 * @param[out] value On success, the requested value will be written
1404 * @retval ENOENT The requested variable was not found.
1405 * @retval ENODEV No valid NVRAM source could be found.
1406 * @retval EFTYPE If the variable data cannot be coerced to a
1407 * a valid integer representation.
1408 * @retval ERANGE If value coercion would overflow (or underflow)
1410 * @retval non-zero If reading @p name otherwise fails, a regular unix
1411 * error code will be returned.
1414 bhnd_nvram_getvar_int16(device_t dev, const char *name, int16_t *value)
1416 return (bhnd_nvram_getvar_int(dev, name, value, sizeof(*value)));
1420 * Read an NVRAM variable's signed 32-bit integer value.
1422 * @param dev A bhnd bus child device.
1423 * @param name The NVRAM variable name.
1424 * @param[out] value On success, the requested value will be written
1428 * @retval ENOENT The requested variable was not found.
1429 * @retval ENODEV No valid NVRAM source could be found.
1430 * @retval EFTYPE If the variable data cannot be coerced to a
1431 * a valid integer representation.
1432 * @retval ERANGE If value coercion would overflow (or underflow)
1434 * @retval non-zero If reading @p name otherwise fails, a regular unix
1435 * error code will be returned.
1438 bhnd_nvram_getvar_int32(device_t dev, const char *name, int32_t *value)
1440 return (bhnd_nvram_getvar_int(dev, name, value, sizeof(*value)));
1444 * Read an NVRAM variable's array value.
1446 * @param dev A bhnd bus child device.
1447 * @param name The NVRAM variable name.
1448 * @param[out] buf A buffer large enough to hold @p size bytes.
1449 * On success, the requested value will be written
1451 * @param[in,out] size The required number of bytes to write to
1453 * @param type The desired array element data representation.
1456 * @retval ENOENT The requested variable was not found.
1457 * @retval ENODEV No valid NVRAM source could be found.
1458 * @retval ENXIO If less than @p size bytes are available.
1459 * @retval ENOMEM If a buffer of @p size is too small to hold the
1461 * @retval EFTYPE If the variable data cannot be coerced to a
1462 * a valid instance of @p type.
1463 * @retval ERANGE If value coercion would overflow (or underflow) a
1464 * representation of @p type.
1465 * @retval non-zero If reading @p name otherwise fails, a regular unix
1466 * error code will be returned.
1469 bhnd_nvram_getvar_array(device_t dev, const char *name, void *buf, size_t size,
1470 bhnd_nvram_type type)
1477 if ((error = bhnd_nvram_getvar(dev, name, buf, &nbytes, type)))
1480 /* Verify that the expected number of bytes were fetched */
1488 * Initialize a service provider registry.
1490 * @param bsr The service registry to initialize.
1493 * @retval non-zero if an error occurs initializing the service registry,
1494 * a regular unix error code will be returned.
1498 bhnd_service_registry_init(struct bhnd_service_registry *bsr)
1500 STAILQ_INIT(&bsr->entries);
1501 mtx_init(&bsr->lock, "bhnd_service_registry lock", NULL, MTX_DEF);
1507 * Release all resources held by @p bsr.
1509 * @param bsr A service registry instance previously successfully
1510 * initialized via bhnd_service_registry_init().
1513 * @retval EBUSY if active references to service providers registered
1514 * with @p bsr exist.
1517 bhnd_service_registry_fini(struct bhnd_service_registry *bsr)
1519 struct bhnd_service_entry *entry, *enext;
1521 /* Remove everthing we can */
1522 mtx_lock(&bsr->lock);
1523 STAILQ_FOREACH_SAFE(entry, &bsr->entries, link, enext) {
1524 if (entry->refs > 0)
1527 STAILQ_REMOVE(&bsr->entries, entry, bhnd_service_entry, link);
1528 free(entry, M_BHND);
1531 if (!STAILQ_EMPTY(&bsr->entries)) {
1532 mtx_unlock(&bsr->lock);
1535 mtx_unlock(&bsr->lock);
1537 mtx_destroy(&bsr->lock);
1542 * Register a @p provider for the given @p service.
1544 * @param bsr Service registry to be modified.
1545 * @param provider Service provider to register.
1546 * @param service Service for which @p provider will be registered.
1547 * @param flags Service provider flags (see BHND_SPF_*).
1550 * @retval EEXIST if an entry for @p service already exists.
1551 * @retval EINVAL if @p service is BHND_SERVICE_ANY.
1552 * @retval non-zero if registering @p provider otherwise fails, a regular
1553 * unix error code will be returned.
1556 bhnd_service_registry_add(struct bhnd_service_registry *bsr, device_t provider,
1557 bhnd_service_t service, uint32_t flags)
1559 struct bhnd_service_entry *entry;
1561 if (service == BHND_SERVICE_ANY)
1564 mtx_lock(&bsr->lock);
1566 /* Is a service provider already registered? */
1567 STAILQ_FOREACH(entry, &bsr->entries, link) {
1568 if (entry->service == service) {
1569 mtx_unlock(&bsr->lock);
1574 /* Initialize and insert our new entry */
1575 entry = malloc(sizeof(*entry), M_BHND, M_NOWAIT);
1576 if (entry == NULL) {
1577 mtx_unlock(&bsr->lock);
1581 entry->provider = provider;
1582 entry->service = service;
1583 entry->flags = flags;
1584 refcount_init(&entry->refs, 0);
1586 STAILQ_INSERT_HEAD(&bsr->entries, entry, link);
1588 mtx_unlock(&bsr->lock);
1593 * Free an unreferenced registry entry.
1595 * @param entry The entry to be deallocated.
1598 bhnd_service_registry_free_entry(struct bhnd_service_entry *entry)
1600 KASSERT(entry->refs == 0, ("provider has active references"));
1601 free(entry, M_BHND);
1605 * Attempt to remove the @p service provider registration for @p provider.
1607 * @param bsr The service registry to be modified.
1608 * @param provider The service provider to be deregistered.
1609 * @param service The service for which @p provider will be deregistered,
1610 * or BHND_SERVICE_ANY to remove all service
1611 * registrations for @p provider.
1614 * @retval EBUSY if active references to @p provider exist; see
1615 * bhnd_service_registry_retain() and
1616 * bhnd_service_registry_release().
1619 bhnd_service_registry_remove(struct bhnd_service_registry *bsr,
1620 device_t provider, bhnd_service_t service)
1622 struct bhnd_service_entry *entry, *enext;
1624 mtx_lock(&bsr->lock);
1626 #define BHND_PROV_MATCH(_e) \
1627 ((_e)->provider == provider && \
1628 (service == BHND_SERVICE_ANY || (_e)->service == service))
1630 /* Validate matching provider entries before making any
1632 STAILQ_FOREACH(entry, &bsr->entries, link) {
1633 /* Skip non-matching entries */
1634 if (!BHND_PROV_MATCH(entry))
1637 /* Entry is in use? */
1638 if (entry->refs > 0) {
1639 mtx_unlock(&bsr->lock);
1644 /* We can now safely remove matching entries */
1645 STAILQ_FOREACH_SAFE(entry, &bsr->entries, link, enext) {
1646 /* Skip non-matching entries */
1647 if (!BHND_PROV_MATCH(entry))
1650 /* Remove from list */
1651 STAILQ_REMOVE(&bsr->entries, entry, bhnd_service_entry, link);
1653 /* Free provider entry */
1654 bhnd_service_registry_free_entry(entry);
1656 #undef BHND_PROV_MATCH
1658 mtx_unlock(&bsr->lock);
1663 * Retain and return a reference to a registered @p service provider, if any.
1665 * @param bsr The service registry to be queried.
1666 * @param service The service for which a provider should be returned.
1668 * On success, the caller assumes ownership the returned provider, and
1669 * is responsible for releasing this reference via
1670 * bhnd_service_registry_release().
1672 * @retval device_t success
1673 * @retval NULL if no provider is registered for @p service.
1676 bhnd_service_registry_retain(struct bhnd_service_registry *bsr,
1677 bhnd_service_t service)
1679 struct bhnd_service_entry *entry;
1681 mtx_lock(&bsr->lock);
1682 STAILQ_FOREACH(entry, &bsr->entries, link) {
1683 if (entry->service != service)
1686 /* With a live refcount, entry is gauranteed to remain alive
1687 * after we release our lock */
1688 refcount_acquire(&entry->refs);
1690 mtx_unlock(&bsr->lock);
1691 return (entry->provider);
1693 mtx_unlock(&bsr->lock);
1700 * Release a reference to a service provider previously returned by
1701 * bhnd_service_registry_retain().
1703 * If this is the last reference to an inherited service provider registration
1704 * (see BHND_SPF_INHERITED), the registration will also be removed, and
1705 * true will be returned.
1707 * @param bsr The service registry from which @p provider
1709 * @param provider The provider to be released.
1710 * @param service The service for which @p provider was previously
1712 * @retval true The inherited service provider registration was removed;
1713 * the caller should release its own reference to the
1715 * @retval false The service provider was not inherited, or active
1716 * references to the provider remain.
1718 * @see BHND_SPF_INHERITED
1721 bhnd_service_registry_release(struct bhnd_service_registry *bsr,
1722 device_t provider, bhnd_service_t service)
1724 struct bhnd_service_entry *entry;
1726 /* Exclusive lock, as we need to prevent any new references to the
1727 * entry from being taken if it's to be removed */
1728 mtx_lock(&bsr->lock);
1729 STAILQ_FOREACH(entry, &bsr->entries, link) {
1732 if (entry->provider != provider)
1735 if (entry->service != service)
1738 if (refcount_release(&entry->refs) &&
1739 (entry->flags & BHND_SPF_INHERITED))
1741 /* If an inherited entry is no longer actively
1742 * referenced, remove the local registration and inform
1744 STAILQ_REMOVE(&bsr->entries, entry, bhnd_service_entry,
1746 bhnd_service_registry_free_entry(entry);
1752 mtx_unlock(&bsr->lock);
1756 /* Caller owns a reference, but no such provider is registered? */
1757 panic("invalid service provider reference");
1761 * Using the bhnd(4) bus-level core information and a custom core name,
1762 * populate @p dev's device description.
1764 * @param dev A bhnd-bus attached device.
1765 * @param dev_name The core's name (e.g. "SDIO Device Core").
1768 bhnd_set_custom_core_desc(device_t dev, const char *dev_name)
1770 const char *vendor_name;
1773 vendor_name = bhnd_get_vendor_name(dev);
1774 asprintf(&desc, M_BHND, "%s %s, rev %hhu", vendor_name, dev_name,
1775 bhnd_get_hwrev(dev));
1778 device_set_desc_copy(dev, desc);
1781 device_set_desc(dev, dev_name);
1786 * Using the bhnd(4) bus-level core information, populate @p dev's device
1789 * @param dev A bhnd-bus attached device.
1792 bhnd_set_default_core_desc(device_t dev)
1794 bhnd_set_custom_core_desc(dev, bhnd_get_device_name(dev));
1798 * Using the bhnd @p chip_id, populate the bhnd(4) bus @p dev's device
1801 * @param dev A bhnd-bus attached device.
1802 * @param chip_id The chip identification.
1805 bhnd_set_default_bus_desc(device_t dev, const struct bhnd_chipid *chip_id)
1807 const char *bus_name;
1809 char chip_name[BHND_CHIPID_MAX_NAMELEN];
1811 /* Determine chip type's bus name */
1812 switch (chip_id->chip_type) {
1813 case BHND_CHIPTYPE_SIBA:
1814 bus_name = "SIBA bus";
1816 case BHND_CHIPTYPE_BCMA:
1817 case BHND_CHIPTYPE_BCMA_ALT:
1818 bus_name = "BCMA bus";
1820 case BHND_CHIPTYPE_UBUS:
1821 bus_name = "UBUS bus";
1824 bus_name = "Unknown Type";
1828 /* Format chip name */
1829 bhnd_format_chip_id(chip_name, sizeof(chip_name),
1832 /* Format and set device description */
1833 asprintf(&desc, M_BHND, "%s %s", chip_name, bus_name);
1835 device_set_desc_copy(dev, desc);
1838 device_set_desc(dev, bus_name);
1844 * Helper function for implementing BHND_BUS_REGISTER_PROVIDER().
1846 * This implementation delegates the request to the BHND_BUS_REGISTER_PROVIDER()
1847 * method on the parent of @p dev. If no parent exists, the implementation
1848 * will return an error.
1851 bhnd_bus_generic_register_provider(device_t dev, device_t child,
1852 device_t provider, bhnd_service_t service)
1854 device_t parent = device_get_parent(dev);
1856 if (parent != NULL) {
1857 return (BHND_BUS_REGISTER_PROVIDER(parent, child,
1858 provider, service));
1865 * Helper function for implementing BHND_BUS_DEREGISTER_PROVIDER().
1867 * This implementation delegates the request to the
1868 * BHND_BUS_DEREGISTER_PROVIDER() method on the parent of @p dev. If no parent
1869 * exists, the implementation will panic.
1872 bhnd_bus_generic_deregister_provider(device_t dev, device_t child,
1873 device_t provider, bhnd_service_t service)
1875 device_t parent = device_get_parent(dev);
1877 if (parent != NULL) {
1878 return (BHND_BUS_DEREGISTER_PROVIDER(parent, child,
1879 provider, service));
1882 panic("missing BHND_BUS_DEREGISTER_PROVIDER()");
1886 * Helper function for implementing BHND_BUS_RETAIN_PROVIDER().
1888 * This implementation delegates the request to the
1889 * BHND_BUS_DEREGISTER_PROVIDER() method on the parent of @p dev. If no parent
1890 * exists, the implementation will return NULL.
1893 bhnd_bus_generic_retain_provider(device_t dev, device_t child,
1894 bhnd_service_t service)
1896 device_t parent = device_get_parent(dev);
1898 if (parent != NULL) {
1899 return (BHND_BUS_RETAIN_PROVIDER(parent, child,
1907 * Helper function for implementing BHND_BUS_RELEASE_PROVIDER().
1909 * This implementation delegates the request to the
1910 * BHND_BUS_DEREGISTER_PROVIDER() method on the parent of @p dev. If no parent
1911 * exists, the implementation will panic.
1914 bhnd_bus_generic_release_provider(device_t dev, device_t child,
1915 device_t provider, bhnd_service_t service)
1917 device_t parent = device_get_parent(dev);
1919 if (parent != NULL) {
1920 return (BHND_BUS_RELEASE_PROVIDER(parent, child,
1921 provider, service));
1924 panic("missing BHND_BUS_RELEASE_PROVIDER()");
1928 * Helper function for implementing BHND_BUS_REGISTER_PROVIDER().
1930 * This implementation uses the bhnd_service_registry_add() function to
1931 * do most of the work. It calls BHND_BUS_GET_SERVICE_REGISTRY() to find
1932 * a suitable service registry to edit.
1935 bhnd_bus_generic_sr_register_provider(device_t dev, device_t child,
1936 device_t provider, bhnd_service_t service)
1938 struct bhnd_service_registry *bsr;
1940 bsr = BHND_BUS_GET_SERVICE_REGISTRY(dev, child);
1942 KASSERT(bsr != NULL, ("NULL service registry"));
1944 return (bhnd_service_registry_add(bsr, provider, service, 0));
1948 * Helper function for implementing BHND_BUS_DEREGISTER_PROVIDER().
1950 * This implementation uses the bhnd_service_registry_remove() function to
1951 * do most of the work. It calls BHND_BUS_GET_SERVICE_REGISTRY() to find
1952 * a suitable service registry to edit.
1955 bhnd_bus_generic_sr_deregister_provider(device_t dev, device_t child,
1956 device_t provider, bhnd_service_t service)
1958 struct bhnd_service_registry *bsr;
1960 bsr = BHND_BUS_GET_SERVICE_REGISTRY(dev, child);
1962 KASSERT(bsr != NULL, ("NULL service registry"));
1964 return (bhnd_service_registry_remove(bsr, provider, service));
1968 * Helper function for implementing BHND_BUS_RETAIN_PROVIDER().
1970 * This implementation uses the bhnd_service_registry_retain() function to
1971 * do most of the work. It calls BHND_BUS_GET_SERVICE_REGISTRY() to find
1972 * a suitable service registry.
1974 * If a local provider for the service is not available, and a parent device is
1975 * available, this implementation will attempt to fetch and locally register
1976 * a service provider reference from the parent of @p dev.
1979 bhnd_bus_generic_sr_retain_provider(device_t dev, device_t child,
1980 bhnd_service_t service)
1982 struct bhnd_service_registry *bsr;
1983 device_t parent, provider;
1986 bsr = BHND_BUS_GET_SERVICE_REGISTRY(dev, child);
1987 KASSERT(bsr != NULL, ("NULL service registry"));
1990 * Attempt to fetch a service provider reference from either the local
1991 * service registry, or if not found, from our parent.
1993 * If we fetch a provider from our parent, we register the provider
1994 * with the local service registry to prevent conflicting local
1995 * registrations from being added.
1998 /* Check the local service registry first */
1999 provider = bhnd_service_registry_retain(bsr, service);
2000 if (provider != NULL)
2003 /* Otherwise, try to delegate to our parent (if any) */
2004 if ((parent = device_get_parent(dev)) == NULL)
2007 provider = BHND_BUS_RETAIN_PROVIDER(parent, dev, service);
2008 if (provider == NULL)
2011 /* Register the inherited service registration with the local
2013 error = bhnd_service_registry_add(bsr, provider, service,
2014 BHND_SPF_INHERITED);
2016 BHND_BUS_RELEASE_PROVIDER(parent, dev, provider,
2018 if (error == EEXIST) {
2019 /* A valid service provider was registered
2020 * concurrently; retry fetching from the local
2025 device_printf(dev, "failed to register service "
2026 "provider: %d\n", error);
2033 * Helper function for implementing BHND_BUS_RELEASE_PROVIDER().
2035 * This implementation uses the bhnd_service_registry_release() function to
2036 * do most of the work. It calls BHND_BUS_GET_SERVICE_REGISTRY() to find
2037 * a suitable service registry.
2040 bhnd_bus_generic_sr_release_provider(device_t dev, device_t child,
2041 device_t provider, bhnd_service_t service)
2043 struct bhnd_service_registry *bsr;
2045 bsr = BHND_BUS_GET_SERVICE_REGISTRY(dev, child);
2046 KASSERT(bsr != NULL, ("NULL service registry"));
2048 /* Release the provider reference; if the refcount hits zero on an
2049 * inherited reference, true will be returned, and we need to drop
2050 * our own bus reference to the provider */
2051 if (!bhnd_service_registry_release(bsr, provider, service))
2054 /* Drop our reference to the borrowed provider */
2055 BHND_BUS_RELEASE_PROVIDER(device_get_parent(dev), dev, provider,
2060 * Helper function for implementing BHND_BUS_IS_HW_DISABLED().
2062 * If a parent device is available, this implementation delegates the
2063 * request to the BHND_BUS_IS_HW_DISABLED() method on the parent of @p dev.
2065 * If no parent device is available (i.e. on a the bus root), the hardware
2066 * is assumed to be usable and false is returned.
2069 bhnd_bus_generic_is_hw_disabled(device_t dev, device_t child)
2071 if (device_get_parent(dev) != NULL)
2072 return (BHND_BUS_IS_HW_DISABLED(device_get_parent(dev), child));
2078 * Helper function for implementing BHND_BUS_GET_CHIPID().
2080 * This implementation delegates the request to the BHND_BUS_GET_CHIPID()
2081 * method on the parent of @p dev. If no parent exists, the implementation
2084 const struct bhnd_chipid *
2085 bhnd_bus_generic_get_chipid(device_t dev, device_t child)
2087 if (device_get_parent(dev) != NULL)
2088 return (BHND_BUS_GET_CHIPID(device_get_parent(dev), child));
2090 panic("missing BHND_BUS_GET_CHIPID()");
2094 * Helper function for implementing BHND_BUS_GET_DMA_TRANSLATION().
2096 * If a parent device is available, this implementation delegates the
2097 * request to the BHND_BUS_GET_DMA_TRANSLATION() method on the parent of @p dev.
2099 * If no parent device is available, this implementation will panic.
2102 bhnd_bus_generic_get_dma_translation(device_t dev, device_t child, u_int width,
2103 uint32_t flags, bus_dma_tag_t *dmat,
2104 struct bhnd_dma_translation *translation)
2106 if (device_get_parent(dev) != NULL) {
2107 return (BHND_BUS_GET_DMA_TRANSLATION(device_get_parent(dev),
2108 child, width, flags, dmat, translation));
2111 panic("missing BHND_BUS_GET_DMA_TRANSLATION()");
2114 /* nvram board_info population macros for bhnd_bus_generic_read_board_info() */
2115 #define BHND_GV(_dest, _name) \
2116 bhnd_nvram_getvar_uint(child, BHND_NVAR_ ## _name, &_dest, \
2119 #define REQ_BHND_GV(_dest, _name) do { \
2120 if ((error = BHND_GV(_dest, _name))) { \
2121 device_printf(dev, \
2122 "error reading " __STRING(_name) ": %d\n", error); \
2127 #define OPT_BHND_GV(_dest, _name, _default) do { \
2128 if ((error = BHND_GV(_dest, _name))) { \
2129 if (error != ENOENT) { \
2130 device_printf(dev, \
2132 __STRING(_name) ": %d\n", error); \
2140 * Helper function for implementing BHND_BUS_READ_BOARDINFO().
2142 * This implementation populates @p info with information from NVRAM,
2143 * defaulting board_vendor and board_type fields to 0 if the
2144 * requested variables cannot be found.
2146 * This behavior is correct for most SoCs, but must be overridden on
2147 * bridged (PCI, PCMCIA, etc) devices to produce a complete bhnd_board_info
2151 bhnd_bus_generic_read_board_info(device_t dev, device_t child,
2152 struct bhnd_board_info *info)
2156 OPT_BHND_GV(info->board_vendor, BOARDVENDOR, 0);
2157 OPT_BHND_GV(info->board_type, BOARDTYPE, 0); /* srom >= 2 */
2158 OPT_BHND_GV(info->board_devid, DEVID, 0); /* srom >= 8 */
2159 REQ_BHND_GV(info->board_rev, BOARDREV);
2160 OPT_BHND_GV(info->board_srom_rev,SROMREV, 0); /* missing in
2163 REQ_BHND_GV(info->board_flags, BOARDFLAGS);
2164 OPT_BHND_GV(info->board_flags2, BOARDFLAGS2, 0); /* srom >= 4 */
2165 OPT_BHND_GV(info->board_flags3, BOARDFLAGS3, 0); /* srom >= 11 */
2175 * Helper function for implementing BHND_BUS_GET_NVRAM_VAR().
2177 * This implementation searches @p dev for a usable NVRAM child device.
2179 * If no usable child device is found on @p dev, the request is delegated to
2180 * the BHND_BUS_GET_NVRAM_VAR() method on the parent of @p dev.
2183 bhnd_bus_generic_get_nvram_var(device_t dev, device_t child, const char *name,
2184 void *buf, size_t *size, bhnd_nvram_type type)
2191 /* Look for a directly-attached NVRAM child */
2192 if ((nvram = device_find_child(dev, "bhnd_nvram", -1)) != NULL)
2193 return BHND_NVRAM_GETVAR(nvram, name, buf, size, type);
2195 /* Try to delegate to parent */
2196 if ((parent = device_get_parent(dev)) == NULL)
2199 return (BHND_BUS_GET_NVRAM_VAR(device_get_parent(dev), child,
2200 name, buf, size, type));
2204 * Helper function for implementing BHND_BUS_ALLOC_RESOURCE().
2206 * This implementation of BHND_BUS_ALLOC_RESOURCE() delegates allocation
2207 * of the underlying resource to BUS_ALLOC_RESOURCE(), and activation
2208 * to @p dev's BHND_BUS_ACTIVATE_RESOURCE().
2210 struct bhnd_resource *
2211 bhnd_bus_generic_alloc_resource(device_t dev, device_t child, int type,
2212 int *rid, rman_res_t start, rman_res_t end, rman_res_t count,
2215 struct bhnd_resource *br;
2216 struct resource *res;
2222 /* Allocate the real bus resource (without activating it) */
2223 res = BUS_ALLOC_RESOURCE(dev, child, type, rid, start, end, count,
2224 (flags & ~RF_ACTIVE));
2228 /* Allocate our bhnd resource wrapper. */
2229 br = malloc(sizeof(struct bhnd_resource), M_BHND, M_NOWAIT);
2236 /* Attempt activation */
2237 if (flags & RF_ACTIVE) {
2238 error = BHND_BUS_ACTIVATE_RESOURCE(dev, child, type, *rid, br);
2247 BUS_RELEASE_RESOURCE(dev, child, type, *rid, res);
2254 * Helper function for implementing BHND_BUS_RELEASE_RESOURCE().
2256 * This implementation of BHND_BUS_RELEASE_RESOURCE() delegates release of
2257 * the backing resource to BUS_RELEASE_RESOURCE().
2260 bhnd_bus_generic_release_resource(device_t dev, device_t child, int type,
2261 int rid, struct bhnd_resource *r)
2265 if ((error = BUS_RELEASE_RESOURCE(dev, child, type, rid, r->res)))
2273 * Helper function for implementing BHND_BUS_ACTIVATE_RESOURCE().
2275 * This implementation of BHND_BUS_ACTIVATE_RESOURCE() first calls the
2276 * BHND_BUS_ACTIVATE_RESOURCE() method of the parent of @p dev.
2278 * If this fails, and if @p dev is the direct parent of @p child, standard
2279 * resource activation is attempted via bus_activate_resource(). This enables
2280 * direct use of the bhnd(4) resource APIs on devices that may not be attached
2281 * to a parent bhnd bus or bridge.
2284 bhnd_bus_generic_activate_resource(device_t dev, device_t child, int type,
2285 int rid, struct bhnd_resource *r)
2290 passthrough = (device_get_parent(child) != dev);
2292 /* Try to delegate to the parent */
2293 if (device_get_parent(dev) != NULL) {
2294 error = BHND_BUS_ACTIVATE_RESOURCE(device_get_parent(dev),
2295 child, type, rid, r);
2300 /* If bhnd(4) activation has failed and we're the child's direct
2301 * parent, try falling back on standard resource activation.
2303 if (error && !passthrough) {
2304 error = bus_activate_resource(child, type, rid, r->res);
2313 * Helper function for implementing BHND_BUS_DEACTIVATE_RESOURCE().
2315 * This implementation of BHND_BUS_ACTIVATE_RESOURCE() simply calls the
2316 * BHND_BUS_ACTIVATE_RESOURCE() method of the parent of @p dev.
2319 bhnd_bus_generic_deactivate_resource(device_t dev, device_t child,
2320 int type, int rid, struct bhnd_resource *r)
2322 if (device_get_parent(dev) != NULL)
2323 return (BHND_BUS_DEACTIVATE_RESOURCE(device_get_parent(dev),
2324 child, type, rid, r));
2330 * Helper function for implementing BHND_BUS_GET_INTR_DOMAIN().
2332 * This implementation simply returns the address of nearest bhnd(4) bus,
2333 * which may be @p dev; this behavior may be incompatible with FDT/OFW targets.
2336 bhnd_bus_generic_get_intr_domain(device_t dev, device_t child, bool self)
2338 return ((uintptr_t)dev);