mptsas.c

LINUX 2.6.17.4的源码

	ConfigExtendedPageHeader_t hdr;
	CONFIGPARMS cfg;
	SasExpanderPage0_t *buffer;
	dma_addr_t dma_handle;
	int error;

	hdr.PageVersion = MPI_SASEXPANDER0_PAGEVERSION;
	hdr.ExtPageLength = 0;
	hdr.PageNumber = 0;
	hdr.Reserved1 = 0;
	hdr.Reserved2 = 0;
	hdr.PageType = MPI_CONFIG_PAGETYPE_EXTENDED;
	hdr.ExtPageType = MPI_CONFIG_EXTPAGETYPE_SAS_EXPANDER;

	cfg.cfghdr.ehdr = &hdr;
	cfg.physAddr = -1;
	cfg.pageAddr = form + form_specific;
	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
	cfg.dir = 0;	/* read */
	cfg.timeout = 10;

	memset(port_info, 0, sizeof(struct mptsas_portinfo));
	error = mpt_config(ioc, &cfg);
	if (error)
		goto out;

	if (!hdr.ExtPageLength) {
		error = -ENXIO;
		goto out;
	}

	buffer = pci_alloc_consistent(ioc->pcidev, hdr.ExtPageLength * 4,
				      &dma_handle);
	if (!buffer) {
		error = -ENOMEM;
		goto out;
	}

	cfg.physAddr = dma_handle;
	cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

	error = mpt_config(ioc, &cfg);
	if (error)
		goto out_free_consistent;

	/* save config data */
	port_info->num_phys = buffer->NumPhys;
	port_info->handle = le16_to_cpu(buffer->DevHandle);
	port_info->phy_info = kcalloc(port_info->num_phys,
		sizeof(struct mptsas_phyinfo),GFP_KERNEL);
	if (!port_info->phy_info) {
		error = -ENOMEM;
		goto out_free_consistent;
	}

 out_free_consistent:
	pci_free_consistent(ioc->pcidev, hdr.ExtPageLength * 4,
			    buffer, dma_handle);
 out:
	return error;
}

static int
mptsas_sas_expander_pg1(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info,
		u32 form, u32 form_specific)
{
	ConfigExtendedPageHeader_t hdr;
	CONFIGPARMS cfg;
	SasExpanderPage1_t *buffer;
	dma_addr_t dma_handle;
	int error=0;

	if (ioc->sas_discovery_runtime &&
		mptsas_is_end_device(&phy_info->attached))
			goto out;

	hdr.PageVersion = MPI_SASEXPANDER0_PAGEVERSION;
	hdr.ExtPageLength = 0;
	hdr.PageNumber = 1;
	hdr.Reserved1 = 0;
	hdr.Reserved2 = 0;
	hdr.PageType = MPI_CONFIG_PAGETYPE_EXTENDED;
	hdr.ExtPageType = MPI_CONFIG_EXTPAGETYPE_SAS_EXPANDER;

	cfg.cfghdr.ehdr = &hdr;
	cfg.physAddr = -1;
	cfg.pageAddr = form + form_specific;
	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
	cfg.dir = 0;	/* read */
	cfg.timeout = 10;

	error = mpt_config(ioc, &cfg);
	if (error)
		goto out;

	if (!hdr.ExtPageLength) {
		error = -ENXIO;
		goto out;
	}

	buffer = pci_alloc_consistent(ioc->pcidev, hdr.ExtPageLength * 4,
				      &dma_handle);
	if (!buffer) {
		error = -ENOMEM;
		goto out;
	}

	cfg.physAddr = dma_handle;
	cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;

	error = mpt_config(ioc, &cfg);
	if (error)
		goto out_free_consistent;


	mptsas_print_expander_pg1(buffer);

	/* save config data */
	phy_info->phy_id = buffer->PhyIdentifier;
	phy_info->port_id = buffer->PhysicalPort;
	phy_info->negotiated_link_rate = buffer->NegotiatedLinkRate;
	phy_info->programmed_link_rate = buffer->ProgrammedLinkRate;
	phy_info->hw_link_rate = buffer->HwLinkRate;
	phy_info->identify.handle = le16_to_cpu(buffer->OwnerDevHandle);
	phy_info->attached.handle = le16_to_cpu(buffer->AttachedDevHandle);

 out_free_consistent:
	pci_free_consistent(ioc->pcidev, hdr.ExtPageLength * 4,
			    buffer, dma_handle);
 out:
	return error;
}

static void
mptsas_parse_device_info(struct sas_identify *identify,
		struct mptsas_devinfo *device_info)
{
	u16 protocols;

	identify->sas_address = device_info->sas_address;
	identify->phy_identifier = device_info->phy_id;

	/*
	 * Fill in Phy Initiator Port Protocol.
	 * Bits 6:3, more than one bit can be set, fall through cases.
	 */
	protocols = device_info->device_info & 0x78;
	identify->initiator_port_protocols = 0;
	if (protocols & MPI_SAS_DEVICE_INFO_SSP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
	if (protocols & MPI_SAS_DEVICE_INFO_STP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
	if (protocols & MPI_SAS_DEVICE_INFO_SMP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
	if (protocols & MPI_SAS_DEVICE_INFO_SATA_HOST)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;

	/*
	 * Fill in Phy Target Port Protocol.
	 * Bits 10:7, more than one bit can be set, fall through cases.
	 */
	protocols = device_info->device_info & 0x780;
	identify->target_port_protocols = 0;
	if (protocols & MPI_SAS_DEVICE_INFO_SSP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_SSP;
	if (protocols & MPI_SAS_DEVICE_INFO_STP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_STP;
	if (protocols & MPI_SAS_DEVICE_INFO_SMP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_SMP;
	if (protocols & MPI_SAS_DEVICE_INFO_SATA_DEVICE)
		identify->target_port_protocols |= SAS_PROTOCOL_SATA;

	/*
	 * Fill in Attached device type.
	 */
	switch (device_info->device_info &
			MPI_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
	case MPI_SAS_DEVICE_INFO_NO_DEVICE:
		identify->device_type = SAS_PHY_UNUSED;
		break;
	case MPI_SAS_DEVICE_INFO_END_DEVICE:
		identify->device_type = SAS_END_DEVICE;
		break;
	case MPI_SAS_DEVICE_INFO_EDGE_EXPANDER:
		identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
		break;
	case MPI_SAS_DEVICE_INFO_FANOUT_EXPANDER:
		identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
		break;
	}
}

static int mptsas_probe_one_phy(struct device *dev,
		struct mptsas_phyinfo *phy_info, int index, int local)
{
	MPT_ADAPTER *ioc;
	struct sas_phy *phy;
	int error;

	if (!dev)
		return -ENODEV;

	if (!phy_info->phy) {
		phy = sas_phy_alloc(dev, index);
		if (!phy)
			return -ENOMEM;
	} else
		phy = phy_info->phy;

	phy->port_identifier = phy_info->port_id;
	mptsas_parse_device_info(&phy->identify, &phy_info->identify);

	/*
	 * Set Negotiated link rate.
	 */
	switch (phy_info->negotiated_link_rate) {
	case MPI_SAS_IOUNIT0_RATE_PHY_DISABLED:
		phy->negotiated_linkrate = SAS_PHY_DISABLED;
		break;
	case MPI_SAS_IOUNIT0_RATE_FAILED_SPEED_NEGOTIATION:
		phy->negotiated_linkrate = SAS_LINK_RATE_FAILED;
		break;
	case MPI_SAS_IOUNIT0_RATE_1_5:
		phy->negotiated_linkrate = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI_SAS_IOUNIT0_RATE_3_0:
		phy->negotiated_linkrate = SAS_LINK_RATE_3_0_GBPS;
		break;
	case MPI_SAS_IOUNIT0_RATE_SATA_OOB_COMPLETE:
	case MPI_SAS_IOUNIT0_RATE_UNKNOWN:
	default:
		phy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN;
		break;
	}

	/*
	 * Set Max hardware link rate.
	 */
	switch (phy_info->hw_link_rate & MPI_SAS_PHY0_PRATE_MAX_RATE_MASK) {
	case MPI_SAS_PHY0_HWRATE_MAX_RATE_1_5:
		phy->maximum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI_SAS_PHY0_PRATE_MAX_RATE_3_0:
		phy->maximum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
		break;
	default:
		break;
	}

	/*
	 * Set Max programmed link rate.
	 */
	switch (phy_info->programmed_link_rate &
			MPI_SAS_PHY0_PRATE_MAX_RATE_MASK) {
	case MPI_SAS_PHY0_PRATE_MAX_RATE_1_5:
		phy->maximum_linkrate = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI_SAS_PHY0_PRATE_MAX_RATE_3_0:
		phy->maximum_linkrate = SAS_LINK_RATE_3_0_GBPS;
		break;
	default:
		break;
	}

	/*
	 * Set Min hardware link rate.
	 */
	switch (phy_info->hw_link_rate & MPI_SAS_PHY0_HWRATE_MIN_RATE_MASK) {
	case MPI_SAS_PHY0_HWRATE_MIN_RATE_1_5:
		phy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI_SAS_PHY0_PRATE_MIN_RATE_3_0:
		phy->minimum_linkrate_hw = SAS_LINK_RATE_3_0_GBPS;
		break;
	default:
		break;
	}

	/*
	 * Set Min programmed link rate.
	 */
	switch (phy_info->programmed_link_rate &
			MPI_SAS_PHY0_PRATE_MIN_RATE_MASK) {
	case MPI_SAS_PHY0_PRATE_MIN_RATE_1_5:
		phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI_SAS_PHY0_PRATE_MIN_RATE_3_0:
		phy->minimum_linkrate = SAS_LINK_RATE_3_0_GBPS;
		break;
	default:
		break;
	}

	if (!phy_info->phy) {

		if (local)
			phy->local_attached = 1;

		error = sas_phy_add(phy);
		if (error) {
			sas_phy_free(phy);
			return error;
		}
		phy_info->phy = phy;
	}

	if ((phy_info->attached.handle) &&
	    (!phy_info->rphy)) {

		struct sas_rphy *rphy;
		struct sas_identify identify;

		ioc = phy_to_ioc(phy_info->phy);

		/*
		 * Let the hotplug_work thread handle processing
		 * the adding/removing of devices that occur
		 * after start of day.
		 */
		if (ioc->sas_discovery_runtime &&
			mptsas_is_end_device(&phy_info->attached))
			return 0;

		mptsas_parse_device_info(&identify, &phy_info->attached);
		switch (identify.device_type) {
		case SAS_END_DEVICE:
			rphy = sas_end_device_alloc(phy);
			break;
		case SAS_EDGE_EXPANDER_DEVICE:
		case SAS_FANOUT_EXPANDER_DEVICE:
			rphy = sas_expander_alloc(phy, identify.device_type);
			break;
		default:
			rphy = NULL;
			break;
		}
		if (!rphy)
			return 0; /* non-fatal: an rphy can be added later */

		rphy->identify = identify;

		error = sas_rphy_add(rphy);
		if (error) {
			sas_rphy_free(rphy);
			return error;
		}

		phy_info->rphy = rphy;
	}

	return 0;
}

static int
mptsas_probe_hba_phys(MPT_ADAPTER *ioc)
{
	struct mptsas_portinfo *port_info, *hba;
	u32 handle = 0xFFFF;
	int error = -ENOMEM, i;

	hba = kzalloc(sizeof(*port_info), GFP_KERNEL);
	if (! hba)
		goto out;

	error = mptsas_sas_io_unit_pg0(ioc, hba);
	if (error)
		goto out_free_port_info;

	mutex_lock(&ioc->sas_topology_mutex);
	port_info = mptsas_find_portinfo_by_handle(ioc, hba->handle);
	if (!port_info) {
		port_info = hba;
		list_add_tail(&port_info->list, &ioc->sas_topology);
	} else {
		port_info->handle = hba->handle;
		for (i = 0; i < hba->num_phys; i++)
			port_info->phy_info[i].negotiated_link_rate =
				hba->phy_info[i].negotiated_link_rate;
		if (hba->phy_info)
			kfree(hba->phy_info);
		kfree(hba);
		hba = NULL;
	}
	mutex_unlock(&ioc->sas_topology_mutex);
	ioc->num_ports = port_info->num_phys;

	for (i = 0; i < port_info->num_phys; i++) {
		mptsas_sas_phy_pg0(ioc, &port_info->phy_info[i],
			(MPI_SAS_PHY_PGAD_FORM_PHY_NUMBER <<
			 MPI_SAS_PHY_PGAD_FORM_SHIFT), i);

		mptsas_sas_device_pg0(ioc, &port_info->phy_info[i].identify,
			(MPI_SAS_DEVICE_PGAD_FORM_GET_NEXT_HANDLE <<
			 MPI_SAS_DEVICE_PGAD_FORM_SHIFT), handle);
		port_info->phy_info[i].identify.phy_id =
		    port_info->phy_info[i].phy_id;
		handle = port_info->phy_info[i].identify.handle;

		if (port_info->phy_info[i].attached.handle) {
			mptsas_sas_device_pg0(ioc,
				&port_info->phy_info[i].attached,
				(MPI_SAS_DEVICE_PGAD_FORM_HANDLE <<
				 MPI_SAS_DEVICE_PGAD_FORM_SHIFT),
				port_info->phy_info[i].attached.handle);
		}

		mptsas_probe_one_phy(&ioc->sh->shost_gendev,
		    &port_info->phy_info[i], ioc->sas_index, 1);
		ioc->sas_index++;
	}

	return 0;

 out_free_port_info:
	if (hba)
		kfree(hba);
 out:
	return error;
}

static int
mptsas_probe_expander_phys(MPT_ADAPTER *ioc, u32 *handle)
{
	struct mptsas_portinfo *port_info, *p, *ex;
	int error = -ENOMEM, i, j;

	ex = kzalloc(sizeof(*port_info), GFP_KERNEL);
	if (!ex)
		goto out;

	error = mptsas_sas_expander_pg0(ioc, ex,
		(MPI_SAS_EXPAND_PGAD_FORM_GET_NEXT_HANDLE <<
		 MPI_SAS_EXPAND_PGAD_FORM_SHIFT), *handle);
	if (error)
		goto out_free_port_info;

	*handle = ex->handle;

	mutex_lock(&ioc->sas_topology_mutex);
	port_info = mptsas_find_portinfo_by_handle(ioc, *handle);
	if (!port_info) {
		port_info = ex;
		list_add_tail(&port_info->list, &ioc->sas_topology);
	} else {
		port_info->handle = ex->handle;
		if (ex->phy_info)
			kfree(ex->phy_info);
		kfree(ex);
		ex = NULL;
	}
	mutex_unlock(&ioc->sas_topology_mutex);

	for (i = 0; i < port_info->num_phys; i++) {
		struct device *parent;

		mptsas_sas_expander_pg1(ioc, &port_info->phy_info[i],
			(MPI_SAS_EXPAND_PGAD_FORM_HANDLE_PHY_NUM <<
			 MPI_SAS_EXPAND_PGAD_FORM_SHIFT), (i << 16) + *handle);

		if (port_info->phy_info[i].identify.handle) {
			mptsas_sas_device_pg0(ioc,
				&port_info->phy_info[i].identify,
				(MPI_SAS_DEVICE_PGAD_FORM_HANDLE <<
				 MPI_SAS_DEVICE_PGAD_FORM_SHIFT),
				port_info->phy_info[i].identify.handle);
			port_info->phy_info[i].identify.phy_id =
			    port_info->phy_info[i].phy_id;
		}

		if (port_info->phy_info[i].attached.handle) {
			mptsas_sas_device_pg0(ioc,
				&port_info->phy_info[i].attached,
				(MPI_SAS_DEVICE_PGAD_FORM_HANDLE <<
				 MPI_SAS_DEVICE_PGAD_FORM_SHIFT),
				port_info->phy_info[i].attached.handle);
			port_info->phy_info[i].attached.phy_id =
			    port_info->phy_info[i].phy_id;
		}

		/*
		 * If we find a parent port handle this expander is
		 * attached to another expander, else it hangs of the
		 * HBA phys.