static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
{
	struct iwl_drv *drv = context;
	const struct iwl_cfg *cfg = cfg(drv);
	struct iwl_fw *fw = &drv->fw;
	struct iwl_ucode_header *ucode;
	int err;
	struct iwl_firmware_pieces pieces;
	const unsigned int api_max = cfg->ucode_api_max;
	unsigned int api_ok = cfg->ucode_api_ok;
	const unsigned int api_min = cfg->ucode_api_min;
	u32 api_ver;
	int i;

	fw->ucode_capa.max_probe_length = 200;
	fw->ucode_capa.standard_phy_calibration_size =
			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	if (!api_ok)
		api_ok = api_max;

	memset(&pieces, 0, sizeof(pieces));

	if (!ucode_raw) {
		if (drv->fw_index <= api_ok)
			IWL_ERR(drv,
				"request for firmware file '%s' failed.\n",
				drv->firmware_name);
		goto try_again;
	}

	IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
		       drv->firmware_name, ucode_raw->size);

	
	if (ucode_raw->size < 4) {
		IWL_ERR(drv, "File size way too small!\n");
		goto try_again;
	}

	
	ucode = (struct iwl_ucode_header *)ucode_raw->data;

	if (ucode->ver)
		err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
	else
		err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
					   &fw->ucode_capa);

	if (err)
		goto try_again;

	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);

	
	if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
		if (api_ver < api_min || api_ver > api_max) {
			IWL_ERR(drv,
				"Driver unable to support your firmware API. "
				"Driver supports v%u, firmware is v%u.\n",
				api_max, api_ver);
			goto try_again;
		}

		if (api_ver < api_ok) {
			if (api_ok != api_max)
				IWL_ERR(drv, "Firmware has old API version, "
					"expected v%u through v%u, got v%u.\n",
					api_ok, api_max, api_ver);
			else
				IWL_ERR(drv, "Firmware has old API version, "
					"expected v%u, got v%u.\n",
					api_max, api_ver);
			IWL_ERR(drv, "New firmware can be obtained from "
				      "http://www.intellinuxwireless.org/.\n");
		}
	}

	IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);


	IWL_DEBUG_INFO(drv, "f/w package hdr ucode version raw = 0x%x\n",
		       drv->fw.ucode_ver);
	IWL_DEBUG_INFO(drv, "f/w package hdr runtime inst size = %Zd\n",
		get_sec_size(&pieces, IWL_UCODE_REGULAR,
			     IWL_UCODE_SECTION_INST));
	IWL_DEBUG_INFO(drv, "f/w package hdr runtime data size = %Zd\n",
		get_sec_size(&pieces, IWL_UCODE_REGULAR,
			     IWL_UCODE_SECTION_DATA));
	IWL_DEBUG_INFO(drv, "f/w package hdr init inst size = %Zd\n",
		get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_INST));
	IWL_DEBUG_INFO(drv, "f/w package hdr init data size = %Zd\n",
		get_sec_size(&pieces, IWL_UCODE_INIT, IWL_UCODE_SECTION_DATA));

	
	if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_INST) >
							cfg->max_inst_size) {
		IWL_ERR(drv, "uCode instr len %Zd too large to fit in\n",
			get_sec_size(&pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_INST));
		goto try_again;
	}

	if (get_sec_size(&pieces, IWL_UCODE_REGULAR, IWL_UCODE_SECTION_DATA) >
							cfg->max_data_size) {
		IWL_ERR(drv, "uCode data len %Zd too large to fit in\n",
			get_sec_size(&pieces, IWL_UCODE_REGULAR,
				     IWL_UCODE_SECTION_DATA));
		goto try_again;
	}

	if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, cfg))
		goto try_again;

	

	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
		if (alloc_pci_desc(drv, &pieces, i))
			goto err_pci_alloc;

	

	fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
	if (pieces.init_evtlog_size)
		fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
	else
		fw->init_evtlog_size =
			cfg->base_params->max_event_log_size;
	fw->init_errlog_ptr = pieces.init_errlog_ptr;
	fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
	if (pieces.inst_evtlog_size)
		fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
	else
		fw->inst_evtlog_size =
			cfg->base_params->max_event_log_size;
	fw->inst_errlog_ptr = pieces.inst_errlog_ptr;

	if (fw->ucode_capa.standard_phy_calibration_size >
	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
		fw->ucode_capa.standard_phy_calibration_size =
			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	
	release_firmware(ucode_raw);
	complete(&drv->request_firmware_complete);

	drv->op_mode = iwl_dvm_ops.start(drv->shrd->trans, &drv->fw);

	if (!drv->op_mode)
		goto out_unbind;

	return;

 try_again:
	
	release_firmware(ucode_raw);
	if (iwl_request_firmware(drv, false))
		goto out_unbind;
	return;

 err_pci_alloc:
	IWL_ERR(drv, "failed to allocate pci memory\n");
	iwl_dealloc_ucode(drv);
	release_firmware(ucode_raw);
 out_unbind:
	complete(&drv->request_firmware_complete);
	device_release_driver(trans(drv)->dev);
}
Beispiel #2
0
/**
 * iwl_ucode_callback - callback when firmware was loaded
 *
 * If loaded successfully, copies the firmware into buffers
 * for the card to fetch (via DMA).
 */
static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
{
	struct iwl_drv *drv = context;
	struct iwl_fw *fw = &drv->fw;
	struct iwl_ucode_header *ucode;
	int err;
	struct iwl_firmware_pieces pieces;
	const unsigned int api_max = drv->cfg->ucode_api_max;
	unsigned int api_ok = drv->cfg->ucode_api_ok;
	const unsigned int api_min = drv->cfg->ucode_api_min;
	u32 api_ver;
	int i;

	fw->ucode_capa.max_probe_length = 200;
	fw->ucode_capa.standard_phy_calibration_size =
			IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	if (!api_ok)
		api_ok = api_max;

	memset(&pieces, 0, sizeof(pieces));

	if (!ucode_raw) {
		if (drv->fw_index <= api_ok)
			IWL_ERR(drv,
				"request for firmware file '%s' failed.\n",
				drv->firmware_name);
		goto try_again;
	}

	IWL_DEBUG_INFO(drv, "Loaded firmware file '%s' (%zd bytes).\n",
		       drv->firmware_name, ucode_raw->size);

	/* Make sure that we got at least the API version number */
	if (ucode_raw->size < 4) {
		IWL_ERR(drv, "File size way too small!\n");
		goto try_again;
	}

	/* Data from ucode file:  header followed by uCode images */
	ucode = (struct iwl_ucode_header *)ucode_raw->data;

	if (ucode->ver)
		err = iwl_parse_v1_v2_firmware(drv, ucode_raw, &pieces);
	else
		err = iwl_parse_tlv_firmware(drv, ucode_raw, &pieces,
					   &fw->ucode_capa);

	if (err)
		goto try_again;

	api_ver = IWL_UCODE_API(drv->fw.ucode_ver);

	/*
	 * api_ver should match the api version forming part of the
	 * firmware filename ... but we don't check for that and only rely
	 * on the API version read from firmware header from here on forward
	 */
	/* no api version check required for experimental uCode */
	if (drv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
		if (api_ver < api_min || api_ver > api_max) {
			IWL_ERR(drv,
				"Driver unable to support your firmware API. "
				"Driver supports v%u, firmware is v%u.\n",
				api_max, api_ver);
			goto try_again;
		}

		if (api_ver < api_ok) {
			if (api_ok != api_max)
				IWL_ERR(drv, "Firmware has old API version, "
					"expected v%u through v%u, got v%u.\n",
					api_ok, api_max, api_ver);
			else
				IWL_ERR(drv, "Firmware has old API version, "
					"expected v%u, got v%u.\n",
					api_max, api_ver);
			IWL_ERR(drv, "New firmware can be obtained from "
				      "http://www.intellinuxwireless.org/.\n");
		}
	}

	IWL_INFO(drv, "loaded firmware version %s", drv->fw.fw_version);

	/*
	 * In mvm uCode there is no difference between data and instructions
	 * sections.
	 */
	if (!fw->mvm_fw && validate_sec_sizes(drv, &pieces, drv->cfg))
		goto try_again;

	/* Allocate ucode buffers for card's bus-master loading ... */

	/* Runtime instructions and 2 copies of data:
	 * 1) unmodified from disk
	 * 2) backup cache for save/restore during power-downs */
	for (i = 0; i < IWL_UCODE_TYPE_MAX; i++)
		if (iwl_alloc_ucode(drv, &pieces, i))
			goto out_free_fw;

	/* Now that we can no longer fail, copy information */

	/*
	 * The (size - 16) / 12 formula is based on the information recorded
	 * for each event, which is of mode 1 (including timestamp) for all
	 * new microcodes that include this information.
	 */
	fw->init_evtlog_ptr = pieces.init_evtlog_ptr;
	if (pieces.init_evtlog_size)
		fw->init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
	else
		fw->init_evtlog_size =
			drv->cfg->base_params->max_event_log_size;
	fw->init_errlog_ptr = pieces.init_errlog_ptr;
	fw->inst_evtlog_ptr = pieces.inst_evtlog_ptr;
	if (pieces.inst_evtlog_size)
		fw->inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
	else
		fw->inst_evtlog_size =
			drv->cfg->base_params->max_event_log_size;
	fw->inst_errlog_ptr = pieces.inst_errlog_ptr;

	/*
	 * figure out the offset of chain noise reset and gain commands
	 * base on the size of standard phy calibration commands table size
	 */
	if (fw->ucode_capa.standard_phy_calibration_size >
	    IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
		fw->ucode_capa.standard_phy_calibration_size =
			IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;

	/* We have our copies now, allow OS release its copies */
	release_firmware(ucode_raw);

	drv->op_mode = iwl_dvm_ops.start(drv->trans, drv->cfg, &drv->fw);

	if (!drv->op_mode)
		goto out_unbind;

	/*
	 * Complete the firmware request last so that
	 * a driver unbind (stop) doesn't run while we
	 * are doing the start() above.
	 */
	complete(&drv->request_firmware_complete);
	return;

 try_again:
	/* try next, if any */
	release_firmware(ucode_raw);
	if (iwl_request_firmware(drv, false))
		goto out_unbind;
	return;

 out_free_fw:
	IWL_ERR(drv, "failed to allocate pci memory\n");
	iwl_dealloc_ucode(drv);
	release_firmware(ucode_raw);
 out_unbind:
	complete(&drv->request_firmware_complete);
	device_release_driver(drv->trans->dev);
}