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path: root/drivers/scsi/mpt2sas/mpt2sas_transport.c
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Diffstat (limited to 'drivers/scsi/mpt2sas/mpt2sas_transport.c')
-rw-r--r--drivers/scsi/mpt2sas/mpt2sas_transport.c243
1 files changed, 194 insertions, 49 deletions
diff --git a/drivers/scsi/mpt2sas/mpt2sas_transport.c b/drivers/scsi/mpt2sas/mpt2sas_transport.c
index 831047466a5a..c6cf20f60720 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_transport.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_transport.c
@@ -163,12 +163,15 @@ _transport_set_identify(struct MPT2SAS_ADAPTER *ioc, u16 handle,
return -EIO;
}
- memset(identify, 0, sizeof(*identify));
+ memset(identify, 0, sizeof(struct sas_identify));
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
/* sas_address */
identify->sas_address = le64_to_cpu(sas_device_pg0.SASAddress);
+ /* phy number of the parent device this device is linked to */
+ identify->phy_identifier = sas_device_pg0.PhyNum;
+
/* device_type */
switch (device_info & MPI2_SAS_DEVICE_INFO_MASK_DEVICE_TYPE) {
case MPI2_SAS_DEVICE_INFO_NO_DEVICE:
@@ -484,7 +487,7 @@ _transport_delete_port(struct MPT2SAS_ADAPTER *ioc,
ioc->logging_level |= MPT_DEBUG_TRANSPORT;
if (device_type == SAS_END_DEVICE)
- mpt2sas_device_remove(ioc, sas_address);
+ mpt2sas_device_remove_by_sas_address(ioc, sas_address);
else if (device_type == SAS_EDGE_EXPANDER_DEVICE ||
device_type == SAS_FANOUT_EXPANDER_DEVICE)
mpt2sas_expander_remove(ioc, sas_address);
@@ -792,9 +795,10 @@ mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc,
sas_address_parent);
- spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
- if (!sas_node)
+ if (!sas_node) {
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return;
+ }
list_for_each_entry_safe(mpt2sas_port, next, &sas_node->sas_port_list,
port_list) {
if (mpt2sas_port->remote_identify.sas_address != sas_address)
@@ -804,8 +808,10 @@ mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
goto out;
}
out:
- if (!found)
+ if (!found) {
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return;
+ }
for (i = 0; i < sas_node->num_phys; i++) {
if (sas_node->phy[i].remote_identify.sas_address == sas_address)
@@ -813,6 +819,7 @@ mpt2sas_transport_port_remove(struct MPT2SAS_ADAPTER *ioc, u64 sas_address,
sizeof(struct sas_identify));
}
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
list_for_each_entry_safe(mpt2sas_phy, next_phy,
&mpt2sas_port->phy_list, port_siblings) {
if ((ioc->logging_level & MPT_DEBUG_TRANSPORT))
@@ -986,12 +993,14 @@ mpt2sas_transport_update_links(struct MPT2SAS_ADAPTER *ioc,
spin_lock_irqsave(&ioc->sas_node_lock, flags);
sas_node = _transport_sas_node_find_by_sas_address(ioc, sas_address);
- spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
- if (!sas_node)
+ if (!sas_node) {
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
return;
+ }
mpt2sas_phy = &sas_node->phy[phy_number];
mpt2sas_phy->attached_handle = handle;
+ spin_unlock_irqrestore(&ioc->sas_node_lock, flags);
if (handle && (link_rate >= MPI2_SAS_NEG_LINK_RATE_1_5)) {
_transport_set_identify(ioc, handle,
&mpt2sas_phy->remote_identify);
@@ -1310,17 +1319,20 @@ _transport_get_enclosure_identifier(struct sas_rphy *rphy, u64 *identifier)
struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
struct _sas_device *sas_device;
unsigned long flags;
+ int rc;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
+ if (sas_device) {
+ *identifier = sas_device->enclosure_logical_id;
+ rc = 0;
+ } else {
+ *identifier = 0;
+ rc = -ENXIO;
+ }
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
-
- if (!sas_device)
- return -ENXIO;
-
- *identifier = sas_device->enclosure_logical_id;
- return 0;
+ return rc;
}
/**
@@ -1335,16 +1347,17 @@ _transport_get_bay_identifier(struct sas_rphy *rphy)
struct MPT2SAS_ADAPTER *ioc = rphy_to_ioc(rphy);
struct _sas_device *sas_device;
unsigned long flags;
+ int rc;
spin_lock_irqsave(&ioc->sas_device_lock, flags);
sas_device = mpt2sas_scsih_sas_device_find_by_sas_address(ioc,
rphy->identify.sas_address);
+ if (sas_device)
+ rc = sas_device->slot;
+ else
+ rc = -ENXIO;
spin_unlock_irqrestore(&ioc->sas_device_lock, flags);
-
- if (!sas_device)
- return -ENXIO;
-
- return sas_device->slot;
+ return rc;
}
/* phy control request structure */
@@ -1629,11 +1642,13 @@ _transport_phy_enable(struct sas_phy *phy, int enable)
{
struct MPT2SAS_ADAPTER *ioc = phy_to_ioc(phy);
Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
+ Mpi2SasIOUnitPage0_t *sas_iounit_pg0 = NULL;
Mpi2ConfigReply_t mpi_reply;
u16 ioc_status;
u16 sz;
int rc = 0;
unsigned long flags;
+ int i, discovery_active;
spin_lock_irqsave(&ioc->sas_node_lock, flags);
if (_transport_sas_node_find_by_sas_address(ioc,
@@ -1651,7 +1666,50 @@ _transport_phy_enable(struct sas_phy *phy, int enable)
/* handle hba phys */
- /* sas_iounit page 1 */
+ /* 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 */
sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (ioc->sas_hba.num_phys *
sizeof(Mpi2SasIOUnit1PhyData_t));
sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
@@ -1676,7 +1734,18 @@ _transport_phy_enable(struct sas_phy *phy, int enable)
rc = -EIO;
goto out;
}
-
+ /* 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));
+ }
if (enable)
sas_iounit_pg1->PhyData[phy->number].PhyFlags
&= ~MPI2_SASIOUNIT1_PHYFLAGS_PHY_DISABLE;
@@ -1692,6 +1761,7 @@ _transport_phy_enable(struct sas_phy *phy, int enable)
out:
kfree(sas_iounit_pg1);
+ kfree(sas_iounit_pg0);
return rc;
}
@@ -1828,7 +1898,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
struct MPT2SAS_ADAPTER *ioc = shost_priv(shost);
Mpi2SmpPassthroughRequest_t *mpi_request;
Mpi2SmpPassthroughReply_t *mpi_reply;
- int rc;
+ int rc, i;
u16 smid;
u32 ioc_state;
unsigned long timeleft;
@@ -1837,24 +1907,20 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
u8 issue_reset = 0;
dma_addr_t dma_addr_in = 0;
dma_addr_t dma_addr_out = 0;
+ dma_addr_t pci_dma_in = 0;
+ dma_addr_t pci_dma_out = 0;
+ void *pci_addr_in = NULL;
+ void *pci_addr_out = NULL;
u16 wait_state_count;
struct request *rsp = req->next_rq;
+ struct bio_vec *bvec = NULL;
if (!rsp) {
printk(MPT2SAS_ERR_FMT "%s: the smp response space is "
"missing\n", ioc->name, __func__);
return -EINVAL;
}
-
- /* do we need to support multiple segments? */
- if (req->bio->bi_vcnt > 1 || rsp->bio->bi_vcnt > 1) {
- printk(MPT2SAS_ERR_FMT "%s: multiple segments req %u %u, "
- "rsp %u %u\n", ioc->name, __func__, req->bio->bi_vcnt,
- blk_rq_bytes(req), rsp->bio->bi_vcnt, blk_rq_bytes(rsp));
- return -EINVAL;
- }
-
- if (ioc->shost_recovery) {
+ if (ioc->shost_recovery || ioc->pci_error_recovery) {
printk(MPT2SAS_INFO_FMT "%s: host reset in progress!\n",
__func__, ioc->name);
return -EFAULT;
@@ -1872,6 +1938,59 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
}
ioc->transport_cmds.status = MPT2_CMD_PENDING;
+ /* 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;
+ }
+ }
+
wait_state_count = 0;
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
@@ -1880,7 +1999,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
"%s: failed due to ioc not operational\n",
ioc->name, __func__);
rc = -EFAULT;
- goto out;
+ goto unmap;
}
ssleep(1);
ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
@@ -1897,7 +2016,7 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
ioc->name, __func__);
rc = -EAGAIN;
- goto out;
+ goto unmap;
}
rc = 0;
@@ -1919,16 +2038,14 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
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;
- dma_addr_out = pci_map_single(ioc->pdev, bio_data(req->bio),
- blk_rq_bytes(req), PCI_DMA_BIDIRECTIONAL);
- if (!dma_addr_out) {
- mpt2sas_base_free_smid(ioc, smid);
- goto unmap;
+ 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);
}
- ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(req) - 4),
- dma_addr_out);
-
/* incr sgel */
psge += ioc->sge_size;
@@ -1937,16 +2054,14 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
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;
- dma_addr_in = pci_map_single(ioc->pdev, bio_data(rsp->bio),
- blk_rq_bytes(rsp), PCI_DMA_BIDIRECTIONAL);
- if (!dma_addr_in) {
- mpt2sas_base_free_smid(ioc, smid);
- goto unmap;
+ 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);
}
- ioc->base_add_sg_single(psge, sgl_flags | (blk_rq_bytes(rsp) + 4),
- dma_addr_in);
-
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT "%s - "
"sending smp request\n", ioc->name, __func__));
@@ -1982,6 +2097,27 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
req->resid_len = 0;
rsp->resid_len -=
le16_to_cpu(mpi_reply->ResponseDataLength);
+ /* 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;
+ }
+ }
} else {
dtransportprintk(ioc, printk(MPT2SAS_INFO_FMT
"%s - no reply\n", ioc->name, __func__));
@@ -2003,6 +2139,15 @@ _transport_smp_handler(struct Scsi_Host *shost, struct sas_rphy *rphy,
pci_unmap_single(ioc->pdev, dma_addr_in, blk_rq_bytes(rsp),
PCI_DMA_BIDIRECTIONAL);
+ 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);
+
out:
ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
mutex_unlock(&ioc->transport_cmds.mutex);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.