mpt2sas_transport.c 64.4 KB
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/*
 * SAS Transport Layer for MPT (Message Passing Technology) based controllers
 *
 * This code is based on drivers/scsi/mpt2sas/mpt2_transport.c
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 * Copyright (C) 2007-2012  LSI Corporation
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 *  (mailto:DL-MPTFusionLinux@lsi.com)
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * NO WARRANTY
 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
 * solely responsible for determining the appropriateness of using and
 * distributing the Program and assumes all risks associated with its
 * exercise of rights under this Agreement, including but not limited to
 * the risks and costs of program errors, damage to or loss of data,
 * programs or equipment, and unavailability or interruption of operations.

 * DISCLAIMER OF LIABILITY
 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), 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 OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/sched.h>
#include <linux/workqueue.h>
#include <linux/delay.h>
#include <linux/pci.h>
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#include <linux/slab.h>
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#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_sas.h>
#include <scsi/scsi_dbg.h>

#include "mpt2sas_base.h"
/**
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 * _transport_sas_node_find_by_sas_address - sas node search
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 * @ioc: per adapter object
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 * @sas_address: sas address of expander or sas host
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 * Context: Calling function should acquire ioc->sas_node_lock.
 *
 * Search for either hba phys or expander device based on handle, then returns
 * the sas_node object.
 */
static struct _sas_node *
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_transport_sas_node_find_by_sas_address(struct MPT2SAS_ADAPTER *ioc,
    u64 sas_address)
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{
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	if (ioc->sas_hba.sas_address == sas_address)
		return &ioc->sas_hba;
	else
		return mpt2sas_scsih_expander_find_by_sas_address(ioc,
		    sas_address);
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}

/**
 * _transport_convert_phy_link_rate -
 * @link_rate: link rate returned from mpt firmware
 *
 * Convert link_rate from mpi fusion into sas_transport form.
 */
static enum sas_linkrate
_transport_convert_phy_link_rate(u8 link_rate)
{
	enum sas_linkrate rc;

	switch (link_rate) {
	case MPI2_SAS_NEG_LINK_RATE_1_5:
		rc = SAS_LINK_RATE_1_5_GBPS;
		break;
	case MPI2_SAS_NEG_LINK_RATE_3_0:
		rc = SAS_LINK_RATE_3_0_GBPS;
		break;
	case MPI2_SAS_NEG_LINK_RATE_6_0:
		rc = SAS_LINK_RATE_6_0_GBPS;
		break;
	case MPI2_SAS_NEG_LINK_RATE_PHY_DISABLED:
		rc = SAS_PHY_DISABLED;
		break;
	case MPI2_SAS_NEG_LINK_RATE_NEGOTIATION_FAILED:
		rc = SAS_LINK_RATE_FAILED;
		break;
	case MPI2_SAS_NEG_LINK_RATE_PORT_SELECTOR:
		rc = SAS_SATA_PORT_SELECTOR;
		break;
	case MPI2_SAS_NEG_LINK_RATE_SMP_RESET_IN_PROGRESS:
		rc = SAS_PHY_RESET_IN_PROGRESS;
		break;
	default:
	case MPI2_SAS_NEG_LINK_RATE_SATA_OOB_COMPLETE:
	case MPI2_SAS_NEG_LINK_RATE_UNKNOWN_LINK_RATE:
		rc = SAS_LINK_RATE_UNKNOWN;
		break;
	}
	return rc;
}

/**
 * _transport_set_identify - set identify for phys and end devices
 * @ioc: per adapter object
 * @handle: device handle
 * @identify: sas identify info
 *
 * Populates sas identify info.
 *
 * Returns 0 for success, non-zero for failure.
 */
static int
_transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
    struct sas_identify *identify)
{
	Mpi2SasDevicePage0_t sas_device_pg0;
	Mpi2ConfigReply_t mpi_reply;
	u32 device_info;
	u32 ioc_status;

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	if (ioc->shost_recovery || ioc->pci_error_recovery) {
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		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
		    __func__, ioc->name);
		return -EFAULT;
	}

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	if ((mpt2sas_config_get_sas_device_pg0(ioc, &mpi_reply, &sas_device_pg0,
	    MPI2_SAS_DEVICE_PGAD_FORM_HANDLE, handle))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
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		    ioc->name, __FILE__, __LINE__, __func__);
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		return -ENXIO;
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	}

	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
	    MPI2_IOCSTATUS_MASK;
	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
		printk(MPT2SAS_ERR_FMT "handle(0x%04x), ioc_status(0x%04x)"
		    "\nfailure at %s:%d/%s()!\n", ioc->name, handle, ioc_status,
		     __FILE__, __LINE__, __func__);
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		return -EIO;
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	}

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	memset(identify, 0, sizeof(struct sas_identify));
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	device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);

	/* sas_address */
	identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);

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	/* phy number of the parent device this device is linked to */
	identify->phy_identifier = sas_device_pg0.PhyNum;

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	/* device_type */
	switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
	case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
		identify->device_type = SAS_PHY_UNUSED;
		break;
	case MPI2_SAS_DEVICE_INFO_END_DEVICE:
		identify->device_type = SAS_END_DEVICE;
		break;
	case MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER:
		identify->device_type = SAS_EDGE_EXPANDER_DEVICE;
		break;
	case MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER:
		identify->device_type = SAS_FANOUT_EXPANDER_DEVICE;
		break;
	}

	/* initiator_port_protocols */
	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SSP;
	if (device_info & MPI2_SAS_DEVICE_INFO_STP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_STP;
	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_INITIATOR)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SMP;
	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_HOST)
		identify->initiator_port_protocols |= SAS_PROTOCOL_SATA;

	/* target_port_protocols */
	if (device_info & MPI2_SAS_DEVICE_INFO_SSP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_SSP;
	if (device_info & MPI2_SAS_DEVICE_INFO_STP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_STP;
	if (device_info & MPI2_SAS_DEVICE_INFO_SMP_TARGET)
		identify->target_port_protocols |= SAS_PROTOCOL_SMP;
	if (device_info & MPI2_SAS_DEVICE_INFO_SATA_DEVICE)
		identify->target_port_protocols |= SAS_PROTOCOL_SATA;

	return 0;
}

/**
 * mpt2sas_transport_done -  internal transport layer callback handler.
 * @ioc: per adapter object
 * @smid: system request message index
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 * @msix_index: MSIX table index supplied by the OS
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 * @reply: reply message frame(lower 32bit addr)
 *
 * Callback handler when sending internal generated transport cmds.
 * The callback index passed is `ioc->transport_cb_idx`
 *
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 * Return 1 meaning mf should be freed from _base_interrupt
 *        0 means the mf is freed from this function.
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 */
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u8
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mpt2sas_transport_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
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    u32 reply)
{
	MPI2DefaultReply_t *mpi_reply;

	mpi_reply =  mpt2sas_base_get_reply_virt_addr(ioc, reply);
	if (ioc->transport_cmds.status == MPT2_CMD_NOT_USED)
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		return 1;
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	if (ioc->transport_cmds.smid != smid)
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		return 1;
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	ioc->transport_cmds.status |= MPT2_CMD_COMPLETE;
	if (mpi_reply) {
		memcpy(ioc->transport_cmds.reply, mpi_reply,
		    mpi_reply->MsgLength*4);
		ioc->transport_cmds.status |= MPT2_CMD_REPLY_VALID;
	}
	ioc->transport_cmds.status &= ~MPT2_CMD_PENDING;
	complete(&ioc->transport_cmds.done);
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	return 1;
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}

/* report manufacture request structure */
struct rep_manu_request{
	u8 smp_frame_type;
	u8 function;
	u8 reserved;
	u8 request_length;
};

/* report manufacture reply structure */
struct rep_manu_reply{
	u8 smp_frame_type; /* 0x41 */
	u8 function; /* 0x01 */
	u8 function_result;
	u8 response_length;
	u16 expander_change_count;
	u8 reserved0[2];
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	u8 sas_format;
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	u8 reserved2[3];
	u8 vendor_id[SAS_EXPANDER_VENDOR_ID_LEN];
	u8 product_id[SAS_EXPANDER_PRODUCT_ID_LEN];
	u8 product_rev[SAS_EXPANDER_PRODUCT_REV_LEN];
	u8 component_vendor_id[SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN];
	u16 component_id;
	u8 component_revision_id;
	u8 reserved3;
	u8 vendor_specific[8];
};

/**
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 * _transport_expander_report_manufacture - obtain SMP report_manufacture
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 * @ioc: per adapter object
 * @sas_address: expander sas address
 * @edev: the sas_expander_device object
 *
 * Fills in the sas_expander_device object when SMP port is created.
 *
 * Returns 0 for success, non-zero for failure.
 */
static int
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_transport_expander_report_manufacture(struct MPT2SAS_ADAPTER *ioc,
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    u64 sas_address, struct sas_expander_device *edev)
{
	Mpi2SmpPassthroughRequest_t *mpi_request;
	Mpi2SmpPassthroughReply_t *mpi_reply;
	struct rep_manu_reply *manufacture_reply;
	struct rep_manu_request *manufacture_request;
	int rc;
	u16 smid;
	u32 ioc_state;
	unsigned long timeleft;
	void *psge;
	u32 sgl_flags;
	u8 issue_reset = 0;
	void *data_out = NULL;
	dma_addr_t data_out_dma;
	u32 sz;
	u16 wait_state_count;

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	if (ioc->shost_recovery || ioc->pci_error_recovery) {
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		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
		    __func__, ioc->name);
		return -EFAULT;
	}

	mutex_lock(&ioc->transport_cmds.mutex);

	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}
	ioc->transport_cmds.status = MPT2_CMD_PENDING;

	wait_state_count = 0;
	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		if (wait_state_count++ == 10) {
			printk(MPT2SAS_ERR_FMT
			    "%s: failed due to ioc not operational\n",
			    ioc->name, __func__);
			rc = -EFAULT;
			goto out;
		}
		ssleep(1);
		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
		printk(MPT2SAS_INFO_FMT "%s: waiting for "
		    "operational state(count=%d)\n", ioc->name,
		    __func__, wait_state_count);
	}
	if (wait_state_count)
		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
		    ioc->name, __func__);

	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
	if (!smid) {
		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	rc = 0;
	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
	ioc->transport_cmds.smid = smid;

	sz = sizeof(struct rep_manu_request) + sizeof(struct rep_manu_reply);
	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);

	if (!data_out) {
		printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
		    __LINE__, __func__);
		rc = -ENOMEM;
		mpt2sas_base_free_smid(ioc, smid);
		goto out;
	}

	manufacture_request = data_out;
	manufacture_request->smp_frame_type = 0x40;
	manufacture_request->function = 1;
	manufacture_request->reserved = 0;
	manufacture_request->request_length = 0;

	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
	mpi_request->PhysicalPort = 0xFF;
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	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;
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	mpi_request->SASAddress = cpu_to_le64(sas_address);
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	mpi_request->RequestDataLength =
	    cpu_to_le16(sizeof(struct rep_manu_request));
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	psge = &mpi_request->SGL;

	/* WRITE sgel first */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct rep_manu_request), data_out_dma);

	/* incr sgel */
	psge += ioc->sge_size;

	/* READ sgel last */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
	    MPI2_SGE_FLAGS_END_OF_LIST);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct rep_manu_reply), data_out_dma +
	    sizeof(struct rep_manu_request));

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	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
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	    "send to sas_addr(0x%016llx)\n", ioc->name,
	    (unsigned long long)sas_address));
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	init_completion(&ioc->transport_cmds.done);
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	mpt2sas_base_put_smid_default(ioc, smid);
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	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
	    10*HZ);

	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
		printk(MPT2SAS_ERR_FMT "%s: timeout\n",
		    ioc->name, __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

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	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "report_manufacture - "
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	    "complete\n", ioc->name));

	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {
		u8 *tmp;

		mpi_reply = ioc->transport_cmds.reply;

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		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
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		    "report_manufacture - reply data transfer size(%d)\n",
		    ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));

		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
		    sizeof(struct rep_manu_reply))
			goto out;

		manufacture_reply = data_out + sizeof(struct rep_manu_request);
		strncpy(edev->vendor_id, manufacture_reply->vendor_id,
		     SAS_EXPANDER_VENDOR_ID_LEN);
		strncpy(edev->product_id, manufacture_reply->product_id,
		     SAS_EXPANDER_PRODUCT_ID_LEN);
		strncpy(edev->product_rev, manufacture_reply->product_rev,
		     SAS_EXPANDER_PRODUCT_REV_LEN);
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		edev->level = manufacture_reply->sas_format & 1;
		if (edev->level) {
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			strncpy(edev->component_vendor_id,
			    manufacture_reply->component_vendor_id,
			     SAS_EXPANDER_COMPONENT_VENDOR_ID_LEN);
			tmp = (u8 *)&manufacture_reply->component_id;
			edev->component_id = tmp[0] << 8 | tmp[1];
			edev->component_revision_id =
			    manufacture_reply->component_revision_id;
		}
	} else
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		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
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		    "report_manufacture - no reply\n", ioc->name));

 issue_host_reset:
	if (issue_reset)
		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
		    FORCE_BIG_HAMMER);
 out:
	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
	if (data_out)
		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);

	mutex_unlock(&ioc->transport_cmds.mutex);
	return rc;
}

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/**
 * _transport_delete_port - helper function to removing a port
 * @ioc: per adapter object
 * @mpt2sas_port: mpt2sas per port object
 *
 * Returns nothing.
 */
static void
_transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
	struct _sas_port *mpt2sas_port)
{
	u64 sas_address = mpt2sas_port->remote_identify.sas_address;
	enum sas_device_type device_type =
	    mpt2sas_port->remote_identify.device_type;

	dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
	    "remove: sas_addr(0x%016llx)\n",
	    (unsigned long long) sas_address);

	ioc->logging_level |= MPT_DEBUG_TRANSPORT;
	if (device_type == SAS_END_DEVICE)
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		mpt2sas_device_remove_by_sas_address(ioc, sas_address);
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	else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
	    device_type == SAS_FANOUT_EXPANDER_DEVICE)
		mpt2sas_expander_remove(ioc, sas_address);
	ioc->logging_level &= ~MPT_DEBUG_TRANSPORT;
}
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/**
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 * _transport_delete_phy - helper function to removing single phy from port
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 * @ioc: per adapter object
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 * @mpt2sas_port: mpt2sas per port object
 * @mpt2sas_phy: mpt2sas per phy object
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 *
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 * Returns nothing.
 */
static void
_transport_delete_phy(struct MPT2SAS_ADAPTER *ioc,
	struct _sas_port *mpt2sas_port, struct _sas_phy *mpt2sas_phy)
{
	u64 sas_address = mpt2sas_port->remote_identify.sas_address;

	dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
	    "remove: sas_addr(0x%016llx), phy(%d)\n",
	    (unsigned long long) sas_address, mpt2sas_phy->phy_id);

	list_del(&mpt2sas_phy->port_siblings);
	mpt2sas_port->num_phys--;
	sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
	mpt2sas_phy->phy_belongs_to_port = 0;
}

/**
 * _transport_add_phy - helper function to adding single phy to port
 * @ioc: per adapter object
 * @mpt2sas_port: mpt2sas per port object
 * @mpt2sas_phy: mpt2sas per phy object
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 *
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 * Returns nothing.
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 */
static void
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_transport_add_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_port *mpt2sas_port,
	struct _sas_phy *mpt2sas_phy)
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{
533
	u64 sas_address = mpt2sas_port->remote_identify.sas_address;
534

535 536 537
	dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
	    "add: sas_addr(0x%016llx), phy(%d)\n", (unsigned long long)
	    sas_address, mpt2sas_phy->phy_id);
538

539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569
	list_add_tail(&mpt2sas_phy->port_siblings, &mpt2sas_port->phy_list);
	mpt2sas_port->num_phys++;
	sas_port_add_phy(mpt2sas_port->port, mpt2sas_phy->phy);
	mpt2sas_phy->phy_belongs_to_port = 1;
}

/**
 * _transport_add_phy_to_an_existing_port - adding new phy to existing port
 * @ioc: per adapter object
 * @sas_node: sas node object (either expander or sas host)
 * @mpt2sas_phy: mpt2sas per phy object
 * @sas_address: sas address of device/expander were phy needs to be added to
 *
 * Returns nothing.
 */
static void
_transport_add_phy_to_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy, u64 sas_address)
{
	struct _sas_port *mpt2sas_port;
	struct _sas_phy *phy_srch;

	if (mpt2sas_phy->phy_belongs_to_port == 1)
		return;

	list_for_each_entry(mpt2sas_port, &sas_node->sas_port_list,
	    port_list) {
		if (mpt2sas_port->remote_identify.sas_address !=
		    sas_address)
			continue;
		list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
570
		    port_siblings) {
571 572
			if (phy_srch == mpt2sas_phy)
				return;
573
		}
574 575
		_transport_add_phy(ioc, mpt2sas_port, mpt2sas_phy);
			return;
576 577
	}

578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595
}

/**
 * _transport_del_phy_from_an_existing_port - delete phy from existing port
 * @ioc: per adapter object
 * @sas_node: sas node object (either expander or sas host)
 * @mpt2sas_phy: mpt2sas per phy object
 *
 * Returns nothing.
 */
static void
_transport_del_phy_from_an_existing_port(struct MPT2SAS_ADAPTER *ioc,
	struct _sas_node *sas_node, struct _sas_phy *mpt2sas_phy)
{
	struct _sas_port *mpt2sas_port, *next;
	struct _sas_phy *phy_srch;

	if (mpt2sas_phy->phy_belongs_to_port == 0)
596 597
		return;

598 599 600 601 602 603 604 605 606 607 608 609 610 611
	list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
	    port_list) {
		list_for_each_entry(phy_srch, &mpt2sas_port->phy_list,
		    port_siblings) {
			if (phy_srch != mpt2sas_phy)
				continue;
			if (mpt2sas_port->num_phys == 1)
				_transport_delete_port(ioc, mpt2sas_port);
			else
				_transport_delete_phy(ioc, mpt2sas_port,
				    mpt2sas_phy);
			return;
		}
	}
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627
}

/**
 * _transport_sanity_check - sanity check when adding a new port
 * @ioc: per adapter object
 * @sas_node: sas node object (either expander or sas host)
 * @sas_address: sas address of device being added
 *
 * See the explanation above from _transport_delete_duplicate_port
 */
static void
_transport_sanity_check(struct MPT2SAS_ADAPTER *ioc, struct _sas_node *sas_node,
     u64 sas_address)
{
	int i;

628 629 630 631 632 633 634
	for (i = 0; i < sas_node->num_phys; i++) {
		if (sas_node->phy[i].remote_identify.sas_address != sas_address)
			continue;
		if (sas_node->phy[i].phy_belongs_to_port == 1)
			_transport_del_phy_from_an_existing_port(ioc, sas_node,
			    &sas_node->phy[i]);
	}
635 636
}

E
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/**
 * mpt2sas_transport_port_add - insert port to the list
 * @ioc: per adapter object
 * @handle: handle of attached device
641
 * @sas_address: sas address of parent expander or sas host
E
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 * Context: This function will acquire ioc->sas_node_lock.
 *
 * Adding new port object to the sas_node->sas_port_list.
 *
 * Returns mpt2sas_port.
 */
struct _sas_port *
mpt2sas_transport_port_add(struct MPT2SAS_ADAPTER *ioc, u16 handle,
650
    u64 sas_address)
E
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{
	struct _sas_phy *mpt2sas_phy, *next;
	struct _sas_port *mpt2sas_port;
	unsigned long flags;
	struct _sas_node *sas_node;
	struct sas_rphy *rphy;
	int i;
	struct sas_port *port;

	mpt2sas_port = kzalloc(sizeof(struct _sas_port),
	    GFP_KERNEL);
	if (!mpt2sas_port) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return NULL;
	}

	INIT_LIST_HEAD(&mpt2sas_port->port_list);
	INIT_LIST_HEAD(&mpt2sas_port->phy_list);
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
671
	sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
E
Eric Moore 已提交
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	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);

	if (!sas_node) {
675 676 677
		printk(MPT2SAS_ERR_FMT "%s: Could not find "
		    "parent sas_address(0x%016llx)!\n", ioc->name,
		    __func__, (unsigned long long)sas_address);
E
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		goto out_fail;
	}

	if ((_transport_set_identify(ioc, handle,
	    &mpt2sas_port->remote_identify))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		goto out_fail;
	}

	if (mpt2sas_port->remote_identify.device_type == SAS_PHY_UNUSED) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		goto out_fail;
	}

694 695 696
	_transport_sanity_check(ioc, sas_node,
	    mpt2sas_port->remote_identify.sas_address);

E
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	for (i = 0; i < sas_node->num_phys; i++) {
		if (sas_node->phy[i].remote_identify.sas_address !=
		    mpt2sas_port->remote_identify.sas_address)
			continue;
		list_add_tail(&sas_node->phy[i].port_siblings,
		    &mpt2sas_port->phy_list);
		mpt2sas_port->num_phys++;
	}

	if (!mpt2sas_port->num_phys) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		goto out_fail;
	}

	port = sas_port_alloc_num(sas_node->parent_dev);
	if ((sas_port_add(port))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		goto out_fail;
	}

	list_for_each_entry(mpt2sas_phy, &mpt2sas_port->phy_list,
	    port_siblings) {
		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
			dev_printk(KERN_INFO, &port->dev, "add: handle(0x%04x)"
			    ", sas_addr(0x%016llx), phy(%d)\n", handle,
			    (unsigned long long)
			    mpt2sas_port->remote_identify.sas_address,
			    mpt2sas_phy->phy_id);
		sas_port_add_phy(port, mpt2sas_phy->phy);
728
		mpt2sas_phy->phy_belongs_to_port = 1;
E
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	}

	mpt2sas_port->port = port;
	if (mpt2sas_port->remote_identify.device_type == SAS_END_DEVICE)
		rphy = sas_end_device_alloc(port);
	else
		rphy = sas_expander_alloc(port,
		    mpt2sas_port->remote_identify.device_type);

	rphy->identify = mpt2sas_port->remote_identify;
	if ((sas_rphy_add(rphy))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
	}
	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
		dev_printk(KERN_INFO, &rphy->dev, "add: handle(0x%04x), "
		    "sas_addr(0x%016llx)\n", handle,
		    (unsigned long long)
		    mpt2sas_port->remote_identify.sas_address);
	mpt2sas_port->rphy = rphy;
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
	list_add_tail(&mpt2sas_port->port_list, &sas_node->sas_port_list);
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);

	/* fill in report manufacture */
	if (mpt2sas_port->remote_identify.device_type ==
	    MPI2_SAS_DEVICE_INFO_EDGE_EXPANDER ||
	    mpt2sas_port->remote_identify.device_type ==
	    MPI2_SAS_DEVICE_INFO_FANOUT_EXPANDER)
758
		_transport_expander_report_manufacture(ioc,
E
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		    mpt2sas_port->remote_identify.sas_address,
		    rphy_to_expander_device(rphy));

	return mpt2sas_port;

 out_fail:
	list_for_each_entry_safe(mpt2sas_phy, next, &mpt2sas_port->phy_list,
	    port_siblings)
		list_del(&mpt2sas_phy->port_siblings);
	kfree(mpt2sas_port);
	return NULL;
}

/**
 * mpt2sas_transport_port_remove - remove port from the list
 * @ioc: per adapter object
 * @sas_address: sas address of attached device
776
 * @sas_address_parent: sas address of parent expander or sas host
E
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 * Context: This function will acquire ioc->sas_node_lock.
 *
 * Removing object and freeing associated memory from the
 * ioc->sas_port_list.
 *
 * Return nothing.
 */
void
mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
786
    u64 sas_address_parent)
E
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{
	int i;
	unsigned long flags;
	struct _sas_port *mpt2sas_port, *next;
	struct _sas_node *sas_node;
	u8 found = 0;
	struct _sas_phy *mpt2sas_phy, *next_phy;

	spin_lock_irqsave(&ioc->sas_node_lock, flags);
796 797
	sas_node = _transport_sas_node_find_by_sas_address(ioc,
	    sas_address_parent);
798 799
	if (!sas_node) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
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		return;
801
	}
E
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	list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
	    port_list) {
		if (mpt2sas_port->remote_identify.sas_address != sas_address)
			continue;
		found = 1;
		list_del(&mpt2sas_port->port_list);
		goto out;
	}
 out:
811 812
	if (!found) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
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		return;
814
	}
E
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	for (i = 0; i < sas_node->num_phys; i++) {
		if (sas_node->phy[i].remote_identify.sas_address == sas_address)
			memset(&sas_node->phy[i].remote_identify, 0 ,
			    sizeof(struct sas_identify));
	}

822
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
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	list_for_each_entry_safe(mpt2sas_phy, next_phy,
	    &mpt2sas_port->phy_list, port_siblings) {
		if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
			dev_printk(KERN_INFO, &mpt2sas_port->port->dev,
827
			    "remove: sas_addr(0x%016llx), phy(%d)\n",
E
Eric Moore 已提交
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			    (unsigned long long)
			    mpt2sas_port->remote_identify.sas_address,
			    mpt2sas_phy->phy_id);
831
		mpt2sas_phy->phy_belongs_to_port = 0;
E
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		sas_port_delete_phy(mpt2sas_port->port, mpt2sas_phy->phy);
		list_del(&mpt2sas_phy->port_siblings);
	}
	sas_port_delete(mpt2sas_port->port);
	kfree(mpt2sas_port);
}

/**
 * mpt2sas_transport_add_host_phy - report sas_host phy to transport
 * @ioc: per adapter object
 * @mpt2sas_phy: mpt2sas per phy object
 * @phy_pg0: sas phy page 0
 * @parent_dev: parent device class object
 *
 * Returns 0 for success, non-zero for failure.
 */
int
mpt2sas_transport_add_host_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
    *mpt2sas_phy, Mpi2SasPhyPage0_t phy_pg0, struct device *parent_dev)
{
	struct sas_phy *phy;
	int phy_index = mpt2sas_phy->phy_id;


	INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
	phy = sas_phy_alloc(parent_dev, phy_index);
	if (!phy) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -1;
	}
	if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
	    &mpt2sas_phy->identify))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -1;
	}
	phy->identify = mpt2sas_phy->identify;
	mpt2sas_phy->attached_handle = le16_to_cpu(phy_pg0.AttachedDevHandle);
	if (mpt2sas_phy->attached_handle)
		_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
		    &mpt2sas_phy->remote_identify);
	phy->identify.phy_identifier = mpt2sas_phy->phy_id;
	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
	    phy_pg0.NegotiatedLinkRate & MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
	    phy_pg0.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
	    phy_pg0.HwLinkRate >> 4);
	phy->minimum_linkrate = _transport_convert_phy_link_rate(
	    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
	phy->maximum_linkrate = _transport_convert_phy_link_rate(
	    phy_pg0.ProgrammedLinkRate >> 4);

	if ((sas_phy_add(phy))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		sas_phy_free(phy);
		return -1;
	}
	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
		dev_printk(KERN_INFO, &phy->dev,
		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
		    mpt2sas_phy->handle, (unsigned long long)
		    mpt2sas_phy->identify.sas_address,
		    mpt2sas_phy->attached_handle,
		    (unsigned long long)
		    mpt2sas_phy->remote_identify.sas_address);
	mpt2sas_phy->phy = phy;
	return 0;
}


/**
 * mpt2sas_transport_add_expander_phy - report expander phy to transport
 * @ioc: per adapter object
 * @mpt2sas_phy: mpt2sas per phy object
 * @expander_pg1: expander page 1
 * @parent_dev: parent device class object
 *
 * Returns 0 for success, non-zero for failure.
 */
int
mpt2sas_transport_add_expander_phy(struct MPT2SAS_ADAPTER *ioc, struct _sas_phy
    *mpt2sas_phy, Mpi2ExpanderPage1_t expander_pg1, struct device *parent_dev)
{
	struct sas_phy *phy;
	int phy_index = mpt2sas_phy->phy_id;

	INIT_LIST_HEAD(&mpt2sas_phy->port_siblings);
	phy = sas_phy_alloc(parent_dev, phy_index);
	if (!phy) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -1;
	}
	if ((_transport_set_identify(ioc, mpt2sas_phy->handle,
	    &mpt2sas_phy->identify))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -1;
	}
	phy->identify = mpt2sas_phy->identify;
	mpt2sas_phy->attached_handle =
	    le16_to_cpu(expander_pg1.AttachedDevHandle);
	if (mpt2sas_phy->attached_handle)
		_transport_set_identify(ioc, mpt2sas_phy->attached_handle,
		    &mpt2sas_phy->remote_identify);
	phy->identify.phy_identifier = mpt2sas_phy->phy_id;
	phy->negotiated_linkrate = _transport_convert_phy_link_rate(
	    expander_pg1.NegotiatedLinkRate &
	    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
	phy->minimum_linkrate_hw = _transport_convert_phy_link_rate(
	    expander_pg1.HwLinkRate & MPI2_SAS_HWRATE_MIN_RATE_MASK);
	phy->maximum_linkrate_hw = _transport_convert_phy_link_rate(
	    expander_pg1.HwLinkRate >> 4);
	phy->minimum_linkrate = _transport_convert_phy_link_rate(
	    expander_pg1.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
	phy->maximum_linkrate = _transport_convert_phy_link_rate(
	    expander_pg1.ProgrammedLinkRate >> 4);

	if ((sas_phy_add(phy))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		sas_phy_free(phy);
		return -1;
	}
	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
		dev_printk(KERN_INFO, &phy->dev,
		    "add: handle(0x%04x), sas_addr(0x%016llx)\n"
		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
		    mpt2sas_phy->handle, (unsigned long long)
		    mpt2sas_phy->identify.sas_address,
		    mpt2sas_phy->attached_handle,
		    (unsigned long long)
		    mpt2sas_phy->remote_identify.sas_address);
	mpt2sas_phy->phy = phy;
	return 0;
}

/**
974
 * mpt2sas_transport_update_links - refreshing phy link changes
E
Eric Moore 已提交
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 * @ioc: per adapter object
976 977
 * @sas_address: sas address of parent expander or sas host
 * @handle: attached device handle
E
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 * @phy_numberv: phy number
 * @link_rate: new link rate
 *
 * Returns nothing.
 */
void
984
mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
985
     u64 sas_address, u16 handle, u8 phy_number, u8 link_rate)
E
Eric Moore 已提交
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{
	unsigned long flags;
	struct _sas_node *sas_node;
	struct _sas_phy *mpt2sas_phy;

991
	if (ioc->shost_recovery || ioc->pci_error_recovery)
992 993
		return;

E
Eric Moore 已提交
994
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
995
	sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
996 997
	if (!sas_node) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
Eric Moore 已提交
998
		return;
999
	}
E
Eric Moore 已提交
1000 1001

	mpt2sas_phy = &sas_node->phy[phy_number];
1002
	mpt2sas_phy->attached_handle = handle;
1003
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1004
	if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
1005
		_transport_set_identify(ioc, handle,
E
Eric Moore 已提交
1006
		    &mpt2sas_phy->remote_identify);
1007 1008 1009
		_transport_add_phy_to_an_existing_port(ioc, sas_node,
		    mpt2sas_phy, mpt2sas_phy->remote_identify.sas_address);
	} else
E
Eric Moore 已提交
1010 1011 1012 1013 1014 1015 1016 1017 1018
		memset(&mpt2sas_phy->remote_identify, 0 , sizeof(struct
		    sas_identify));

	if (mpt2sas_phy->phy)
		mpt2sas_phy->phy->negotiated_linkrate =
		    _transport_convert_phy_link_rate(link_rate);

	if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
		dev_printk(KERN_INFO, &mpt2sas_phy->phy->dev,
1019
		    "refresh: parent sas_addr(0x%016llx),\n"
E
Eric Moore 已提交
1020 1021
		    "\tlink_rate(0x%02x), phy(%d)\n"
		    "\tattached_handle(0x%04x), sas_addr(0x%016llx)\n",
1022 1023
		    (unsigned long long)sas_address,
		    link_rate, phy_number, handle, (unsigned long long)
E
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		    mpt2sas_phy->remote_identify.sas_address);
}

static inline void *
phy_to_ioc(struct sas_phy *phy)
{
	struct Scsi_Host *shost = dev_to_shost(phy->dev.parent);
	return shost_priv(shost);
}

static inline void *
rphy_to_ioc(struct sas_rphy *rphy)
{
	struct Scsi_Host *shost = dev_to_shost(rphy->dev.parent->parent);
	return shost_priv(shost);
}

1041

1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058
/* report phy error log structure */
struct phy_error_log_request{
	u8 smp_frame_type; /* 0x40 */
	u8 function; /* 0x11 */
	u8 allocated_response_length;
	u8 request_length; /* 02 */
	u8 reserved_1[5];
	u8 phy_identifier;
	u8 reserved_2[2];
};

/* report phy error log reply structure */
struct phy_error_log_reply{
	u8 smp_frame_type; /* 0x41 */
	u8 function; /* 0x11 */
	u8 function_result;
	u8 response_length;
1059
	__be16 expander_change_count;
1060 1061 1062
	u8 reserved_1[3];
	u8 phy_identifier;
	u8 reserved_2[2];
1063 1064 1065 1066
	__be32 invalid_dword;
	__be32 running_disparity_error;
	__be32 loss_of_dword_sync;
	__be32 phy_reset_problem;
1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096
};

/**
 * _transport_get_expander_phy_error_log - return expander counters
 * @ioc: per adapter object
 * @phy: The sas phy object
 *
 * Returns 0 for success, non-zero for failure.
 *
 */
static int
_transport_get_expander_phy_error_log(struct MPT2SAS_ADAPTER *ioc,
    struct sas_phy *phy)
{
	Mpi2SmpPassthroughRequest_t *mpi_request;
	Mpi2SmpPassthroughReply_t *mpi_reply;
	struct phy_error_log_request *phy_error_log_request;
	struct phy_error_log_reply *phy_error_log_reply;
	int rc;
	u16 smid;
	u32 ioc_state;
	unsigned long timeleft;
	void *psge;
	u32 sgl_flags;
	u8 issue_reset = 0;
	void *data_out = NULL;
	dma_addr_t data_out_dma;
	u32 sz;
	u16 wait_state_count;

1097
	if (ioc->shost_recovery || ioc->pci_error_recovery) {
1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168
		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
		    __func__, ioc->name);
		return -EFAULT;
	}

	mutex_lock(&ioc->transport_cmds.mutex);

	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}
	ioc->transport_cmds.status = MPT2_CMD_PENDING;

	wait_state_count = 0;
	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		if (wait_state_count++ == 10) {
			printk(MPT2SAS_ERR_FMT
			    "%s: failed due to ioc not operational\n",
			    ioc->name, __func__);
			rc = -EFAULT;
			goto out;
		}
		ssleep(1);
		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
		printk(MPT2SAS_INFO_FMT "%s: waiting for "
		    "operational state(count=%d)\n", ioc->name,
		    __func__, wait_state_count);
	}
	if (wait_state_count)
		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
		    ioc->name, __func__);

	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
	if (!smid) {
		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
	ioc->transport_cmds.smid = smid;

	sz = sizeof(struct phy_error_log_request) +
	    sizeof(struct phy_error_log_reply);
	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
	if (!data_out) {
		printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
		    __LINE__, __func__);
		rc = -ENOMEM;
		mpt2sas_base_free_smid(ioc, smid);
		goto out;
	}

	rc = -EINVAL;
	memset(data_out, 0, sz);
	phy_error_log_request = data_out;
	phy_error_log_request->smp_frame_type = 0x40;
	phy_error_log_request->function = 0x11;
	phy_error_log_request->request_length = 2;
	phy_error_log_request->allocated_response_length = 0;
	phy_error_log_request->phy_identifier = phy->number;

	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
	mpi_request->PhysicalPort = 0xFF;
	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;
1169
	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
	mpi_request->RequestDataLength =
	    cpu_to_le16(sizeof(struct phy_error_log_request));
	psge = &mpi_request->SGL;

	/* WRITE sgel first */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct phy_error_log_request), data_out_dma);

	/* incr sgel */
	psge += ioc->sge_size;

	/* READ sgel last */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
	    MPI2_SGE_FLAGS_END_OF_LIST);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct phy_error_log_reply), data_out_dma +
	    sizeof(struct phy_error_log_request));

	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
	    "send to sas_addr(0x%016llx), phy(%d)\n", ioc->name,
	    (unsigned long long)phy->identify.sas_address, phy->number));
	init_completion(&ioc->transport_cmds.done);
1197
	mpt2sas_base_put_smid_default(ioc, smid);
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258
	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
	    10*HZ);

	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
		printk(MPT2SAS_ERR_FMT "%s: timeout\n",
		    ioc->name, __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_error_log - "
	    "complete\n", ioc->name));

	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {

		mpi_reply = ioc->transport_cmds.reply;

		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_error_log - reply data transfer size(%d)\n",
		    ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));

		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
		    sizeof(struct phy_error_log_reply))
			goto out;

		phy_error_log_reply = data_out +
		    sizeof(struct phy_error_log_request);

		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_error_log - function_result(%d)\n",
		    ioc->name, phy_error_log_reply->function_result));

		phy->invalid_dword_count =
		    be32_to_cpu(phy_error_log_reply->invalid_dword);
		phy->running_disparity_error_count =
		    be32_to_cpu(phy_error_log_reply->running_disparity_error);
		phy->loss_of_dword_sync_count =
		    be32_to_cpu(phy_error_log_reply->loss_of_dword_sync);
		phy->phy_reset_problem_count =
		    be32_to_cpu(phy_error_log_reply->phy_reset_problem);
		rc = 0;
	} else
		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_error_log - no reply\n", ioc->name));

 issue_host_reset:
	if (issue_reset)
		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
		    FORCE_BIG_HAMMER);
 out:
	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
	if (data_out)
		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);

	mutex_unlock(&ioc->transport_cmds.mutex);
	return rc;
}

E
Eric Moore 已提交
1259
/**
1260
 * _transport_get_linkerrors - return phy counters for both hba and expanders
E
Eric Moore 已提交
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 * @phy: The sas phy object
 *
 * Returns 0 for success, non-zero for failure.
 *
 */
static int
1267
_transport_get_linkerrors(struct sas_phy *phy)
E
Eric Moore 已提交
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{
	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
1270
	unsigned long flags;
E
Eric Moore 已提交
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	Mpi2ConfigReply_t mpi_reply;
	Mpi2SasPhyPage1_t phy_pg1;

1274 1275 1276 1277
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
	if (_transport_sas_node_find_by_sas_address(ioc,
	    phy->identify.sas_address) == NULL) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
Eric Moore 已提交
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		return -EINVAL;
1279 1280 1281 1282 1283
	}
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);

	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
		return _transport_get_expander_phy_error_log(ioc, phy);
E
Eric Moore 已提交
1284

1285
	/* get hba phy error logs */
E
Eric Moore 已提交
1286
	if ((mpt2sas_config_get_phy_pg1(ioc, &mpi_reply, &phy_pg1,
1287
		    phy->number))) {
E
Eric Moore 已提交
1288 1289 1290 1291 1292 1293 1294 1295
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -ENXIO;
	}

	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
		printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
		    "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1296
		    phy->number, le16_to_cpu(mpi_reply.IOCStatus),
E
Eric Moore 已提交
1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
		    le32_to_cpu(mpi_reply.IOCLogInfo));

	phy->invalid_dword_count = le32_to_cpu(phy_pg1.InvalidDwordCount);
	phy->running_disparity_error_count =
	    le32_to_cpu(phy_pg1.RunningDisparityErrorCount);
	phy->loss_of_dword_sync_count =
	    le32_to_cpu(phy_pg1.LossDwordSynchCount);
	phy->phy_reset_problem_count =
	    le32_to_cpu(phy_pg1.PhyResetProblemCount);
	return 0;
}

/**
1310
 * _transport_get_enclosure_identifier -
E
Eric Moore 已提交
1311 1312 1313 1314 1315 1316
 * @phy: The sas phy object
 *
 * Obtain the enclosure logical id for an expander.
 * Returns 0 for success, non-zero for failure.
 */
static int
1317
_transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
E
Eric Moore 已提交
1318 1319
{
	struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
1320
	struct _sas_device *sas_device;
E
Eric Moore 已提交
1321
	unsigned long flags;
1322
	int rc;
E
Eric Moore 已提交
1323

1324 1325
	spin_lock_irqsave(&ioc->sas_device_lock, flags);
	sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
E
Eric Moore 已提交
1326
	    rphy->identify.sas_address);
1327 1328 1329 1330 1331 1332 1333
	if (sas_device) {
		*identifier = sas_device->enclosure_logical_id;
		rc = 0;
	} else {
		*identifier = 0;
		rc = -ENXIO;
	}
1334
	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1335
	return rc;
E
Eric Moore 已提交
1336 1337 1338
}

/**
1339
 * _transport_get_bay_identifier -
E
Eric Moore 已提交
1340 1341 1342 1343 1344
 * @phy: The sas phy object
 *
 * Returns the slot id for a device that resides inside an enclosure.
 */
static int
1345
_transport_get_bay_identifier(struct sas_rphy *rphy)
E
Eric Moore 已提交
1346 1347 1348 1349
{
	struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
	struct _sas_device *sas_device;
	unsigned long flags;
1350
	int rc;
E
Eric Moore 已提交
1351 1352 1353 1354

	spin_lock_irqsave(&ioc->sas_device_lock, flags);
	sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
	    rphy->identify.sas_address);
1355 1356 1357 1358
	if (sas_device)
		rc = sas_device->slot;
	else
		rc = -ENXIO;
E
Eric Moore 已提交
1359
	spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
1360
	return rc;
E
Eric Moore 已提交
1361 1362
}

1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496
/* phy control request structure */
struct phy_control_request{
	u8 smp_frame_type; /* 0x40 */
	u8 function; /* 0x91 */
	u8 allocated_response_length;
	u8 request_length; /* 0x09 */
	u16 expander_change_count;
	u8 reserved_1[3];
	u8 phy_identifier;
	u8 phy_operation;
	u8 reserved_2[13];
	u64 attached_device_name;
	u8 programmed_min_physical_link_rate;
	u8 programmed_max_physical_link_rate;
	u8 reserved_3[6];
};

/* phy control reply structure */
struct phy_control_reply{
	u8 smp_frame_type; /* 0x41 */
	u8 function; /* 0x11 */
	u8 function_result;
	u8 response_length;
};

#define SMP_PHY_CONTROL_LINK_RESET	(0x01)
#define SMP_PHY_CONTROL_HARD_RESET	(0x02)
#define SMP_PHY_CONTROL_DISABLE		(0x03)

/**
 * _transport_expander_phy_control - expander phy control
 * @ioc: per adapter object
 * @phy: The sas phy object
 *
 * Returns 0 for success, non-zero for failure.
 *
 */
static int
_transport_expander_phy_control(struct MPT2SAS_ADAPTER *ioc,
    struct sas_phy *phy, u8 phy_operation)
{
	Mpi2SmpPassthroughRequest_t *mpi_request;
	Mpi2SmpPassthroughReply_t *mpi_reply;
	struct phy_control_request *phy_control_request;
	struct phy_control_reply *phy_control_reply;
	int rc;
	u16 smid;
	u32 ioc_state;
	unsigned long timeleft;
	void *psge;
	u32 sgl_flags;
	u8 issue_reset = 0;
	void *data_out = NULL;
	dma_addr_t data_out_dma;
	u32 sz;
	u16 wait_state_count;

	if (ioc->shost_recovery) {
		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
		    __func__, ioc->name);
		return -EFAULT;
	}

	mutex_lock(&ioc->transport_cmds.mutex);

	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}
	ioc->transport_cmds.status = MPT2_CMD_PENDING;

	wait_state_count = 0;
	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		if (wait_state_count++ == 10) {
			printk(MPT2SAS_ERR_FMT
			    "%s: failed due to ioc not operational\n",
			    ioc->name, __func__);
			rc = -EFAULT;
			goto out;
		}
		ssleep(1);
		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
		printk(MPT2SAS_INFO_FMT "%s: waiting for "
		    "operational state(count=%d)\n", ioc->name,
		    __func__, wait_state_count);
	}
	if (wait_state_count)
		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
		    ioc->name, __func__);

	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
	if (!smid) {
		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
		goto out;
	}

	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
	ioc->transport_cmds.smid = smid;

	sz = sizeof(struct phy_control_request) +
	    sizeof(struct phy_control_reply);
	data_out = pci_alloc_consistent(ioc->pdev, sz, &data_out_dma);
	if (!data_out) {
		printk(KERN_ERR "failure at %s:%d/%s()!\n", __FILE__,
		    __LINE__, __func__);
		rc = -ENOMEM;
		mpt2sas_base_free_smid(ioc, smid);
		goto out;
	}

	rc = -EINVAL;
	memset(data_out, 0, sz);
	phy_control_request = data_out;
	phy_control_request->smp_frame_type = 0x40;
	phy_control_request->function = 0x91;
	phy_control_request->request_length = 9;
	phy_control_request->allocated_response_length = 0;
	phy_control_request->phy_identifier = phy->number;
	phy_control_request->phy_operation = phy_operation;
	phy_control_request->programmed_min_physical_link_rate =
	    phy->minimum_linkrate << 4;
	phy_control_request->programmed_max_physical_link_rate =
	    phy->maximum_linkrate << 4;

	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
	mpi_request->PhysicalPort = 0xFF;
	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;
1497
	mpi_request->SASAddress = cpu_to_le64(phy->identify.sas_address);
1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524
	mpi_request->RequestDataLength =
	    cpu_to_le16(sizeof(struct phy_error_log_request));
	psge = &mpi_request->SGL;

	/* WRITE sgel first */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct phy_control_request), data_out_dma);

	/* incr sgel */
	psge += ioc->sge_size;

	/* READ sgel last */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
	    MPI2_SGE_FLAGS_END_OF_LIST);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
	ioc->base_add_sg_single(psge, sgl_flags |
	    sizeof(struct phy_control_reply), data_out_dma +
	    sizeof(struct phy_control_request));

	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
	    "send to sas_addr(0x%016llx), phy(%d), opcode(%d)\n", ioc->name,
	    (unsigned long long)phy->identify.sas_address, phy->number,
	    phy_operation));
1525

1526
	init_completion(&ioc->transport_cmds.done);
1527
	mpt2sas_base_put_smid_default(ioc, smid);
1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580
	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
	    10*HZ);

	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
		printk(MPT2SAS_ERR_FMT "%s: timeout\n",
		    ioc->name, __func__);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "phy_control - "
	    "complete\n", ioc->name));

	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {

		mpi_reply = ioc->transport_cmds.reply;

		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_control - reply data transfer size(%d)\n",
		    ioc->name, le16_to_cpu(mpi_reply->ResponseDataLength)));

		if (le16_to_cpu(mpi_reply->ResponseDataLength) !=
		    sizeof(struct phy_control_reply))
			goto out;

		phy_control_reply = data_out +
		    sizeof(struct phy_control_request);

		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_control - function_result(%d)\n",
		    ioc->name, phy_control_reply->function_result));

		rc = 0;
	} else
		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
		    "phy_control - no reply\n", ioc->name));

 issue_host_reset:
	if (issue_reset)
		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
		    FORCE_BIG_HAMMER);
 out:
	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
	if (data_out)
		pci_free_consistent(ioc->pdev, sz, data_out, data_out_dma);

	mutex_unlock(&ioc->transport_cmds.mutex);
	return rc;
}

E
Eric Moore 已提交
1581
/**
1582
 * _transport_phy_reset -
E
Eric Moore 已提交
1583 1584 1585 1586 1587 1588
 * @phy: The sas phy object
 * @hard_reset:
 *
 * Returns 0 for success, non-zero for failure.
 */
static int
1589
_transport_phy_reset(struct sas_phy *phy, int hard_reset)
E
Eric Moore 已提交
1590 1591 1592 1593
{
	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
	Mpi2SasIoUnitControlReply_t mpi_reply;
	Mpi2SasIoUnitControlRequest_t mpi_request;
1594
	unsigned long flags;
E
Eric Moore 已提交
1595

1596 1597 1598 1599
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
	if (_transport_sas_node_find_by_sas_address(ioc,
	    phy->identify.sas_address) == NULL) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
Eric Moore 已提交
1600
		return -EINVAL;
1601 1602
	}
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
E
Eric Moore 已提交
1603

1604 1605 1606 1607 1608 1609 1610
	/* handle expander phys */
	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
		return _transport_expander_phy_control(ioc, phy,
		    (hard_reset == 1) ? SMP_PHY_CONTROL_HARD_RESET :
		    SMP_PHY_CONTROL_LINK_RESET);

	/* handle hba phys */
E
Eric Moore 已提交
1611 1612 1613 1614
	memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t));
	mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
	mpi_request.Operation = hard_reset ?
	    MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;
1615
	mpi_request.PhyNum = phy->number;
E
Eric Moore 已提交
1616 1617 1618 1619 1620 1621 1622 1623 1624 1625

	if ((mpt2sas_base_sas_iounit_control(ioc, &mpi_reply, &mpi_request))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		return -ENXIO;
	}

	if (mpi_reply.IOCStatus || mpi_reply.IOCLogInfo)
		printk(MPT2SAS_INFO_FMT "phy(%d), ioc_status"
		    "(0x%04x), loginfo(0x%08x)\n", ioc->name,
1626
		    phy->number, le16_to_cpu(mpi_reply.IOCStatus),
E
Eric Moore 已提交
1627 1628 1629 1630 1631
		    le32_to_cpu(mpi_reply.IOCLogInfo));

	return 0;
}

1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644
/**
 * _transport_phy_enable - enable/disable phys
 * @phy: The sas phy object
 * @enable: enable phy when true
 *
 * Only support sas_host direct attached phys.
 * Returns 0 for success, non-zero for failure.
 */
static int
_transport_phy_enable(struct sas_phy *phy, int enable)
{
	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
1645
	Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
1646 1647 1648 1649
	Mpi2ConfigReply_t mpi_reply;
	u16 ioc_status;
	u16 sz;
	int rc = 0;
1650
	unsigned long flags;
1651
	int i, discovery_active;
1652

1653 1654 1655 1656
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
	if (_transport_sas_node_find_by_sas_address(ioc,
	    phy->identify.sas_address) == NULL) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1657
		return -EINVAL;
1658 1659 1660 1661 1662 1663 1664 1665 1666 1667
	}
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);

	/* handle expander phys */
	if (phy->identify.sas_address != ioc->sas_hba.sas_address)
		return _transport_expander_phy_control(ioc, phy,
		    (enable == 1) ? SMP_PHY_CONTROL_LINK_RESET :
		    SMP_PHY_CONTROL_DISABLE);

	/* handle hba phys */
1668

1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712
	/* read sas_iounit page 0 */
	sz = offsetof(Mpi2SasIOUnitPage0_t, PhyData) + (ioc->sas_hba.num_phys *
	    sizeof(Mpi2SasIOUnit0PhyData_t));
	sas_iounit_pg0 = kzalloc(sz, GFP_KERNEL);
	if (!sas_iounit_pg0) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENOMEM;
		goto out;
	}
	if ((mpt2sas_config_get_sas_iounit_pg0(ioc, &mpi_reply,
	    sas_iounit_pg0, sz))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENXIO;
		goto out;
	}
	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
	    MPI2_IOCSTATUS_MASK;
	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -EIO;
		goto out;
	}

	/* unable to enable/disable phys when when discovery is active */
	for (i = 0, discovery_active = 0; i < ioc->sas_hba.num_phys ; i++) {
		if (sas_iounit_pg0->PhyData[i].PortFlags &
		    MPI2_SASIOUNIT0_PORTFLAGS_DISCOVERY_IN_PROGRESS) {
			printk(MPT2SAS_ERR_FMT "discovery is active on "
			    "port = %d, phy = %d: unable to enable/disable "
			    "phys, try again later!\n", ioc->name,
			    sas_iounit_pg0->PhyData[i].Port, i);
			discovery_active = 1;
		}
	}

	if (discovery_active) {
		rc = -EAGAIN;
		goto out;
	}

	/* read sas_iounit page 1 */
1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736
	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
	    sizeof(Mpi2SasIOUnit1PhyData_t));
	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
	if (!sas_iounit_pg1) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENOMEM;
		goto out;
	}
	if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
	    sas_iounit_pg1, sz))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENXIO;
		goto out;
	}
	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
	    MPI2_IOCSTATUS_MASK;
	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -EIO;
		goto out;
	}
1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
	/* copy Port/PortFlags/PhyFlags from page 0 */
	for (i = 0; i < ioc->sas_hba.num_phys ; i++) {
		sas_iounit_pg1->PhyData[i].Port =
		    sas_iounit_pg0->PhyData[i].Port;
		sas_iounit_pg1->PhyData[i].PortFlags =
		    (sas_iounit_pg0->PhyData[i].PortFlags &
		    MPI2_SASIOUNIT0_PORTFLAGS_AUTO_PORT_CONFIG);
		sas_iounit_pg1->PhyData[i].PhyFlags =
		    (sas_iounit_pg0->PhyData[i].PhyFlags &
		    (MPI2_SASIOUNIT0_PHYFLAGS_ZONING_ENABLED +
		    MPI2_SASIOUNIT0_PHYFLAGS_PHY_DISABLED));
	}
1749
	if (enable)
1750
		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1751 1752
		    &= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
	else
1753
		sas_iounit_pg1->PhyData[phy->number].PhyFlags
1754 1755 1756 1757
		    |= MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;

	mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1, sz);

1758 1759 1760 1761
	/* link reset */
	if (enable)
		_transport_phy_reset(phy, 0);

1762 1763
 out:
	kfree(sas_iounit_pg1);
1764
	kfree(sas_iounit_pg0);
1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786
	return rc;
}

/**
 * _transport_phy_speed - set phy min/max link rates
 * @phy: The sas phy object
 * @rates: rates defined in sas_phy_linkrates
 *
 * Only support sas_host direct attached phys.
 * Returns 0 for success, non-zero for failure.
 */
static int
_transport_phy_speed(struct sas_phy *phy, struct sas_phy_linkrates *rates)
{
	struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
	Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
	Mpi2SasPhyPage0_t phy_pg0;
	Mpi2ConfigReply_t mpi_reply;
	u16 ioc_status;
	u16 sz;
	int i;
	int rc = 0;
1787
	unsigned long flags;
1788

1789 1790 1791 1792
	spin_lock_irqsave(&ioc->sas_node_lock, flags);
	if (_transport_sas_node_find_by_sas_address(ioc,
	    phy->identify.sas_address) == NULL) {
		spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1793
		return -EINVAL;
1794 1795
	}
	spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806

	if (!rates->minimum_linkrate)
		rates->minimum_linkrate = phy->minimum_linkrate;
	else if (rates->minimum_linkrate < phy->minimum_linkrate_hw)
		rates->minimum_linkrate = phy->minimum_linkrate_hw;

	if (!rates->maximum_linkrate)
		rates->maximum_linkrate = phy->maximum_linkrate;
	else if (rates->maximum_linkrate > phy->maximum_linkrate_hw)
		rates->maximum_linkrate = phy->maximum_linkrate_hw;

1807 1808 1809 1810 1811 1812 1813 1814 1815 1816
	/* handle expander phys */
	if (phy->identify.sas_address != ioc->sas_hba.sas_address) {
		phy->minimum_linkrate = rates->minimum_linkrate;
		phy->maximum_linkrate = rates->maximum_linkrate;
		return _transport_expander_phy_control(ioc, phy,
		    SMP_PHY_CONTROL_LINK_RESET);
	}

	/* handle hba phys */

1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843
	/* sas_iounit page 1 */
	sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
	    sizeof(Mpi2SasIOUnit1PhyData_t));
	sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
	if (!sas_iounit_pg1) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENOMEM;
		goto out;
	}
	if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
	    sas_iounit_pg1, sz))) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENXIO;
		goto out;
	}
	ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
	    MPI2_IOCSTATUS_MASK;
	if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -EIO;
		goto out;
	}

	for (i = 0; i < ioc->sas_hba.num_phys; i++) {
1844
		if (phy->number != i) {
1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867
			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
			    (ioc->sas_hba.phy[i].phy->minimum_linkrate +
			    (ioc->sas_hba.phy[i].phy->maximum_linkrate << 4));
		} else {
			sas_iounit_pg1->PhyData[i].MaxMinLinkRate =
			    (rates->minimum_linkrate +
			    (rates->maximum_linkrate << 4));
		}
	}

	if (mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
	    sz)) {
		printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
		    ioc->name, __FILE__, __LINE__, __func__);
		rc = -ENXIO;
		goto out;
	}

	/* link reset */
	_transport_phy_reset(phy, 0);

	/* read phy page 0, then update the rates in the sas transport phy */
	if (!mpt2sas_config_get_phy_pg0(ioc, &mpi_reply, &phy_pg0,
1868
	    phy->number)) {
1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883
		phy->minimum_linkrate = _transport_convert_phy_link_rate(
		    phy_pg0.ProgrammedLinkRate & MPI2_SAS_PRATE_MIN_RATE_MASK);
		phy->maximum_linkrate = _transport_convert_phy_link_rate(
		    phy_pg0.ProgrammedLinkRate >> 4);
		phy->negotiated_linkrate = _transport_convert_phy_link_rate(
		    phy_pg0.NegotiatedLinkRate &
		    MPI2_SAS_NEG_LINK_RATE_MASK_PHYSICAL);
	}

 out:
	kfree(sas_iounit_pg1);
	return rc;
}


E
Eric Moore 已提交
1884
/**
1885
 * _transport_smp_handler - transport portal for smp passthru
E
Eric Moore 已提交
1886 1887 1888 1889 1890 1891 1892 1893 1894
 * @shost: shost object
 * @rphy: sas transport rphy object
 * @req:
 *
 * This used primarily for smp_utils.
 * Example:
 *           smp_rep_general /sys/class/bsg/expander-5:0
 */
static int
1895
_transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
E
Eric Moore 已提交
1896 1897 1898 1899 1900
    struct request *req)
{
	struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
	Mpi2SmpPassthroughRequest_t *mpi_request;
	Mpi2SmpPassthroughReply_t *mpi_reply;
1901
	int rc, i;
E
Eric Moore 已提交
1902 1903 1904 1905 1906 1907 1908 1909
	u16 smid;
	u32 ioc_state;
	unsigned long timeleft;
	void *psge;
	u32 sgl_flags;
	u8 issue_reset = 0;
	dma_addr_t dma_addr_in = 0;
	dma_addr_t dma_addr_out = 0;
1910 1911 1912 1913
	dma_addr_t pci_dma_in = 0;
	dma_addr_t pci_dma_out = 0;
	void *pci_addr_in = NULL;
	void *pci_addr_out = NULL;
E
Eric Moore 已提交
1914 1915
	u16 wait_state_count;
	struct request *rsp = req->next_rq;
1916
	struct bio_vec *bvec = NULL;
E
Eric Moore 已提交
1917 1918 1919 1920 1921 1922

	if (!rsp) {
		printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
		    "missing\n", ioc->name, __func__);
		return -EINVAL;
	}
1923
	if (ioc->shost_recovery || ioc->pci_error_recovery) {
E
Eric Moore 已提交
1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940
		printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
		    __func__, ioc->name);
		return -EFAULT;
	}

	rc = mutex_lock_interruptible(&ioc->transport_cmds.mutex);
	if (rc)
		return rc;

	if (ioc->transport_cmds.status != MPT2_CMD_NOT_USED) {
		printk(MPT2SAS_ERR_FMT "%s: transport_cmds in use\n", ioc->name,
		    __func__);
		rc = -EAGAIN;
		goto out;
	}
	ioc->transport_cmds.status = MPT2_CMD_PENDING;

1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993
	/* Check if the request is split across multiple segments */
	if (req->bio->bi_vcnt > 1) {
		u32 offset = 0;

		/* Allocate memory and copy the request */
		pci_addr_out = pci_alloc_consistent(ioc->pdev,
		    blk_rq_bytes(req), &pci_dma_out);
		if (!pci_addr_out) {
			printk(MPT2SAS_INFO_FMT "%s(): PCI Addr out = NULL\n",
			    ioc->name, __func__);
			rc = -ENOMEM;
			goto out;
		}

		bio_for_each_segment(bvec, req->bio, i) {
			memcpy(pci_addr_out + offset,
			    page_address(bvec->bv_page) + bvec->bv_offset,
			    bvec->bv_len);
			offset += bvec->bv_len;
		}
	} else {
		dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
		    blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
		if (!dma_addr_out) {
			printk(MPT2SAS_INFO_FMT "%s(): DMA Addr out = NULL\n",
			    ioc->name, __func__);
			rc = -ENOMEM;
			goto free_pci;
		}
	}

	/* Check if the response needs to be populated across
	 * multiple segments */
	if (rsp->bio->bi_vcnt > 1) {
		pci_addr_in = pci_alloc_consistent(ioc->pdev, blk_rq_bytes(rsp),
		    &pci_dma_in);
		if (!pci_addr_in) {
			printk(MPT2SAS_INFO_FMT "%s(): PCI Addr in = NULL\n",
			    ioc->name, __func__);
			rc = -ENOMEM;
			goto unmap;
		}
	} else {
		dma_addr_in =  pci_map_single(ioc->pdev, bio_data(rsp->bio),
		    blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
		if (!dma_addr_in) {
			printk(MPT2SAS_INFO_FMT "%s(): DMA Addr in = NULL\n",
			    ioc->name, __func__);
			rc = -ENOMEM;
			goto unmap;
		}
	}

E
Eric Moore 已提交
1994 1995 1996 1997 1998 1999 2000 2001
	wait_state_count = 0;
	ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
	while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
		if (wait_state_count++ == 10) {
			printk(MPT2SAS_ERR_FMT
			    "%s: failed due to ioc not operational\n",
			    ioc->name, __func__);
			rc = -EFAULT;
2002
			goto unmap;
E
Eric Moore 已提交
2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018
		}
		ssleep(1);
		ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
		printk(MPT2SAS_INFO_FMT "%s: waiting for "
		    "operational state(count=%d)\n", ioc->name,
		    __func__, wait_state_count);
	}
	if (wait_state_count)
		printk(MPT2SAS_INFO_FMT "%s: ioc is operational\n",
		    ioc->name, __func__);

	smid = mpt2sas_base_get_smid(ioc, ioc->transport_cb_idx);
	if (!smid) {
		printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
		    ioc->name, __func__);
		rc = -EAGAIN;
2019
		goto unmap;
E
Eric Moore 已提交
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	}

	rc = 0;
	mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
	ioc->transport_cmds.smid = smid;

	memset(mpi_request, 0, sizeof(Mpi2SmpPassthroughRequest_t));
	mpi_request->Function = MPI2_FUNCTION_SMP_PASSTHROUGH;
	mpi_request->PhysicalPort = 0xFF;
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	mpi_request->VF_ID = 0; /* TODO */
	mpi_request->VP_ID = 0;
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	mpi_request->SASAddress = (rphy) ?
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	    cpu_to_le64(rphy->identify.sas_address) :
	    cpu_to_le64(ioc->sas_hba.sas_address);
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	mpi_request->RequestDataLength = cpu_to_le16(blk_rq_bytes(req) - 4);
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	psge = &mpi_request->SGL;

	/* WRITE sgel first */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_HOST_TO_IOC);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
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	if (req->bio->bi_vcnt > 1) {
		ioc->base_add_sg_single(psge, sgl_flags |
		    (blk_rq_bytes(req) - 4), pci_dma_out);
	} else {
		ioc->base_add_sg_single(psge, sgl_flags |
		    (blk_rq_bytes(req) - 4), dma_addr_out);
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	}

	/* incr sgel */
	psge += ioc->sge_size;

	/* READ sgel last */
	sgl_flags = (MPI2_SGE_FLAGS_SIMPLE_ELEMENT |
	    MPI2_SGE_FLAGS_LAST_ELEMENT | MPI2_SGE_FLAGS_END_OF_BUFFER |
	    MPI2_SGE_FLAGS_END_OF_LIST);
	sgl_flags = sgl_flags << MPI2_SGE_FLAGS_SHIFT;
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	if (rsp->bio->bi_vcnt > 1) {
		ioc->base_add_sg_single(psge, sgl_flags |
		    (blk_rq_bytes(rsp) + 4), pci_dma_in);
	} else {
		ioc->base_add_sg_single(psge, sgl_flags |
		    (blk_rq_bytes(rsp) + 4), dma_addr_in);
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	}

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	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
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	    "sending smp request\n", ioc->name, __func__));

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	init_completion(&ioc->transport_cmds.done);
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	mpt2sas_base_put_smid_default(ioc, smid);
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	timeleft = wait_for_completion_timeout(&ioc->transport_cmds.done,
	    10*HZ);

	if (!(ioc->transport_cmds.status & MPT2_CMD_COMPLETE)) {
		printk(MPT2SAS_ERR_FMT "%s : timeout\n",
		    __func__, ioc->name);
		_debug_dump_mf(mpi_request,
		    sizeof(Mpi2SmpPassthroughRequest_t)/4);
		if (!(ioc->transport_cmds.status & MPT2_CMD_RESET))
			issue_reset = 1;
		goto issue_host_reset;
	}

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	dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
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	    "complete\n", ioc->name, __func__));

	if (ioc->transport_cmds.status & MPT2_CMD_REPLY_VALID) {

		mpi_reply = ioc->transport_cmds.reply;

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		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
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		    "%s - reply data transfer size(%d)\n",
		    ioc->name, __func__,
		    le16_to_cpu(mpi_reply->ResponseDataLength)));

		memcpy(req->sense, mpi_reply, sizeof(*mpi_reply));
		req->sense_len = sizeof(*mpi_reply);
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		req->resid_len = 0;
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		rsp->resid_len -=
		    le16_to_cpu(mpi_reply->ResponseDataLength);
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		/* check if the resp needs to be copied from the allocated
		 * pci mem */
		if (rsp->bio->bi_vcnt > 1) {
			u32 offset = 0;
			u32 bytes_to_copy =
			    le16_to_cpu(mpi_reply->ResponseDataLength);
			bio_for_each_segment(bvec, rsp->bio, i) {
				if (bytes_to_copy <= bvec->bv_len) {
					memcpy(page_address(bvec->bv_page) +
					    bvec->bv_offset, pci_addr_in +
					    offset, bytes_to_copy);
					break;
				} else {
					memcpy(page_address(bvec->bv_page) +
					    bvec->bv_offset, pci_addr_in +
					    offset, bvec->bv_len);
					bytes_to_copy -= bvec->bv_len;
				}
				offset += bvec->bv_len;
			}
		}
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	} else {
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		dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
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		    "%s - no reply\n", ioc->name, __func__));
		rc = -ENXIO;
	}

 issue_host_reset:
	if (issue_reset) {
		mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
		    FORCE_BIG_HAMMER);
		rc = -ETIMEDOUT;
	}

 unmap:
	if (dma_addr_out)
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		pci_unmap_single(ioc->pdev, dma_addr_out, blk_rq_bytes(req),
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		    PCI_DMA_BIDIRECTIONAL);
	if (dma_addr_in)
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		pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
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		    PCI_DMA_BIDIRECTIONAL);

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 free_pci:
	if (pci_addr_out)
		pci_free_consistent(ioc->pdev, blk_rq_bytes(req), pci_addr_out,
		    pci_dma_out);

	if (pci_addr_in)
		pci_free_consistent(ioc->pdev, blk_rq_bytes(rsp), pci_addr_in,
		    pci_dma_in);

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 out:
	ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
	mutex_unlock(&ioc->transport_cmds.mutex);
	return rc;
}

struct sas_function_template mpt2sas_transport_functions = {
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	.get_linkerrors		= _transport_get_linkerrors,
	.get_enclosure_identifier = _transport_get_enclosure_identifier,
	.get_bay_identifier	= _transport_get_bay_identifier,
	.phy_reset		= _transport_phy_reset,
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	.phy_enable		= _transport_phy_enable,
	.set_phy_speed		= _transport_phy_speed,
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	.smp_handler		= _transport_smp_handler,
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};

struct scsi_transport_template *mpt2sas_transport_template;
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