Differential D7539 Diff 19738 head/sys/dev/bhnd/bhnd_subr.c

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head/sys/dev/bhnd/bhnd_subr.c

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	* @retval 0 success			* @retval 0 success
	* @retval non-zero if the ChipCommon identification data could not be read.			* @retval non-zero if the ChipCommon identification data could not be read.
	*/			*/
	int			int
	bhnd_read_chipid(device_t dev, struct resource_spec *rs,			bhnd_read_chipid(device_t dev, struct resource_spec *rs,
	bus_size_t chipc_offset, struct bhnd_chipid *result)			bus_size_t chipc_offset, struct bhnd_chipid *result)
	{			{
	struct resource *res;			struct resource *res;
				bhnd_addr_t enum_addr;
	uint32_t reg;			uint32_t reg;
				uint8_t chip_type;
	int error, rid, rtype;			int error, rid, rtype;

	/* Allocate the ChipCommon window resource and fetch the chipid data */
	rid = rs->rid;			rid = rs->rid;
	rtype = rs->type;			rtype = rs->type;
				error = 0;

				/* Allocate the ChipCommon window resource and fetch the chipid data */
	res = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);			res = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
	if (res == NULL) {			if (res == NULL) {
	device_printf(dev,			device_printf(dev,
	"failed to allocate bhnd chipc resource\n");			"failed to allocate bhnd chipc resource\n");
	return (ENXIO);			return (ENXIO);
	}			}

	/* Fetch the basic chip info */			/* Fetch the basic chip info */
	reg = bus_read_4(res, chipc_offset + CHIPC_ID);			reg = bus_read_4(res, chipc_offset + CHIPC_ID);
	*result = bhnd_parse_chipid(reg, 0x0);			chip_type = CHIPC_GET_BITS(reg, CHIPC_ID_BUS);

	/* Fetch the enum base address */			/* Fetch the EROMPTR */
	error = 0;			if (BHND_CHIPTYPE_HAS_EROM(chip_type)) {
	switch (result->chip_type) {			enum_addr = bus_read_4(res, chipc_offset + CHIPC_EROMPTR);
	case BHND_CHIPTYPE_SIBA:			} else if (chip_type == BHND_CHIPTYPE_SIBA) {
	result->enum_addr = BHND_DEFAULT_CHIPC_ADDR;			/* siba(4) uses the ChipCommon base address as the enumeration
	break;			* address */
	case BHND_CHIPTYPE_BCMA:			enum_addr = rman_get_start(res) + chipc_offset;
	case BHND_CHIPTYPE_BCMA_ALT:			} else {
	result->enum_addr = bus_read_4(res, chipc_offset +			device_printf(dev, "unknown chip type %hhu\n", chip_type);
	CHIPC_EROMPTR);
	break;
	case BHND_CHIPTYPE_UBUS:
	device_printf(dev, "unsupported ubus/bcm63xx chip type");
	error = ENODEV;			error = ENODEV;
	goto cleanup;			goto cleanup;
	default:
	device_printf(dev, "unknown chip type %hhu\n",
	result->chip_type);
	error = ENODEV;
	goto cleanup;
	}			}

				*result = bhnd_parse_chipid(reg, enum_addr);

	cleanup:			cleanup:
	/* Clean up */			/* Clean up */
	bus_release_resource(dev, rtype, rid, res);			bus_release_resource(dev, rtype, rid, res);
	return (error);			return (error);
	}			}

	/**			/**
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