From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/drivers/s390/scsi/zfcp_scsi.c | 157 ++++++++++++++++++++++++++++++++++++++++++++++-----
1 files changed, 140 insertions(+), 17 deletions(-)
diff --git a/kernel/drivers/s390/scsi/zfcp_scsi.c b/kernel/drivers/s390/scsi/zfcp_scsi.c
index 588bf5a..d58bf79 100644
--- a/kernel/drivers/s390/scsi/zfcp_scsi.c
+++ b/kernel/drivers/s390/scsi/zfcp_scsi.c
@@ -4,7 +4,7 @@
*
* Interface to Linux SCSI midlayer.
*
- * Copyright IBM Corp. 2002, 2018
+ * Copyright IBM Corp. 2002, 2020
*/
#define KMSG_COMPONENT "zfcp"
@@ -27,7 +27,11 @@
static bool enable_dif;
module_param_named(dif, enable_dif, bool, 0400);
-MODULE_PARM_DESC(dif, "Enable DIF/DIX data integrity support");
+MODULE_PARM_DESC(dif, "Enable DIF data integrity support (default off)");
+
+bool zfcp_experimental_dix;
+module_param_named(dix, zfcp_experimental_dix, bool, 0400);
+MODULE_PARM_DESC(dix, "Enable experimental DIX (data integrity extension) support which implies DIF support (default off)");
static bool allow_lun_scan = true;
module_param(allow_lun_scan, bool, 0600);
@@ -235,7 +239,9 @@
(struct zfcp_scsi_req_filter *)data;
/* already aborted - prevent side-effects - or not a SCSI command */
- if (old_req->data == NULL || old_req->fsf_command != FSF_QTCB_FCP_CMND)
+ if (old_req->data == NULL ||
+ zfcp_fsf_req_is_status_read_buffer(old_req) ||
+ old_req->qtcb->header.fsf_command != FSF_QTCB_FCP_CMND)
return;
/* (tmf_scope == FCP_TMF_TGT_RESET || tmf_scope == FCP_TMF_LUN_RESET) */
@@ -435,8 +441,9 @@
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
/* GCD, adjusted later */
+ /* report size limit per scatter-gather segment */
+ .max_segment_size = ZFCP_QDIO_SBALE_LEN,
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
- .use_clustering = 1,
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
@@ -444,26 +451,39 @@
};
/**
- * zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer
+ * zfcp_scsi_adapter_register() - Allocate and register SCSI and FC host with
+ * SCSI midlayer
* @adapter: The zfcp adapter to register with the SCSI midlayer
+ *
+ * Allocates the SCSI host object for the given adapter, sets basic properties
+ * (such as the transport template, QDIO limits, ...), and registers it with
+ * the midlayer.
+ *
+ * During registration with the midlayer the corresponding FC host object for
+ * the referenced transport class is also implicitely allocated.
+ *
+ * Upon success adapter->scsi_host is set, and upon failure it remains NULL. If
+ * adapter->scsi_host is already set, nothing is done.
+ *
+ * Return:
+ * * 0 - Allocation and registration was successful
+ * * -EEXIST - SCSI and FC host did already exist, nothing was done, nothing
+ * was changed
+ * * -EIO - Allocation or registration failed
*/
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
{
struct ccw_dev_id dev_id;
if (adapter->scsi_host)
- return 0;
+ return -EEXIST;
ccw_device_get_id(adapter->ccw_device, &dev_id);
/* register adapter as SCSI host with mid layer of SCSI stack */
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
sizeof (struct zfcp_adapter *));
- if (!adapter->scsi_host) {
- dev_err(&adapter->ccw_device->dev,
- "Registering the FCP device with the "
- "SCSI stack failed\n");
- return -EIO;
- }
+ if (!adapter->scsi_host)
+ goto err_out;
/* tell the SCSI stack some characteristics of this adapter */
adapter->scsi_host->max_id = 511;
@@ -473,14 +493,23 @@
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
+ /* make all basic properties known at registration time */
+ zfcp_qdio_shost_update(adapter, adapter->qdio);
+ zfcp_scsi_set_prot(adapter);
+
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
scsi_host_put(adapter->scsi_host);
- return -EIO;
+ goto err_out;
}
return 0;
+err_out:
+ adapter->scsi_host = NULL;
+ dev_err(&adapter->ccw_device->dev,
+ "Registering the FCP device with the SCSI stack failed\n");
+ return -EIO;
}
/**
@@ -598,7 +627,7 @@
return NULL;
ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
- if (ret) {
+ if (ret != 0 && ret != -EAGAIN) {
kfree(data);
return NULL;
}
@@ -627,7 +656,7 @@
return;
ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
- if (ret)
+ if (ret != 0 && ret != -EAGAIN)
kfree(data);
else {
adapter->stats_reset = jiffies/HZ;
@@ -801,11 +830,11 @@
data_div = atomic_read(&adapter->status) &
ZFCP_STATUS_ADAPTER_DATA_DIV_ENABLED;
- if (enable_dif &&
+ if ((enable_dif || zfcp_experimental_dix) &&
adapter->adapter_features & FSF_FEATURE_DIF_PROT_TYPE1)
mask |= SHOST_DIF_TYPE1_PROTECTION;
- if (enable_dif && data_div &&
+ if (zfcp_experimental_dix && data_div &&
adapter->adapter_features & FSF_FEATURE_DIX_PROT_TCPIP) {
mask |= SHOST_DIX_TYPE1_PROTECTION;
scsi_host_set_guard(shost, SHOST_DIX_GUARD_IP);
@@ -834,6 +863,95 @@
set_host_byte(scmd, DID_SOFT_ERROR);
}
+void zfcp_scsi_shost_update_config_data(
+ struct zfcp_adapter *const adapter,
+ const struct fsf_qtcb_bottom_config *const bottom,
+ const bool bottom_incomplete)
+{
+ struct Scsi_Host *const shost = adapter->scsi_host;
+ const struct fc_els_flogi *nsp, *plogi;
+
+ if (shost == NULL)
+ return;
+
+ snprintf(fc_host_firmware_version(shost), FC_VERSION_STRING_SIZE,
+ "0x%08x", bottom->lic_version);
+
+ if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
+ snprintf(fc_host_hardware_version(shost),
+ FC_VERSION_STRING_SIZE,
+ "0x%08x", bottom->hardware_version);
+ memcpy(fc_host_serial_number(shost), bottom->serial_number,
+ min(FC_SERIAL_NUMBER_SIZE, 17));
+ EBCASC(fc_host_serial_number(shost),
+ min(FC_SERIAL_NUMBER_SIZE, 17));
+ }
+
+ /* adjust pointers for missing command code */
+ nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
+ - sizeof(u32));
+ plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
+ - sizeof(u32));
+
+ snprintf(fc_host_manufacturer(shost), FC_SERIAL_NUMBER_SIZE, "%s",
+ "IBM");
+ fc_host_port_name(shost) = be64_to_cpu(nsp->fl_wwpn);
+ fc_host_node_name(shost) = be64_to_cpu(nsp->fl_wwnn);
+ fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
+
+ zfcp_scsi_set_prot(adapter);
+
+ /* do not evaluate invalid fields */
+ if (bottom_incomplete)
+ return;
+
+ fc_host_port_id(shost) = ntoh24(bottom->s_id);
+ fc_host_speed(shost) =
+ zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
+
+ snprintf(fc_host_model(shost), FC_SYMBOLIC_NAME_SIZE, "0x%04x",
+ bottom->adapter_type);
+
+ switch (bottom->fc_topology) {
+ case FSF_TOPO_P2P:
+ fc_host_port_type(shost) = FC_PORTTYPE_PTP;
+ fc_host_fabric_name(shost) = 0;
+ break;
+ case FSF_TOPO_FABRIC:
+ fc_host_fabric_name(shost) = be64_to_cpu(plogi->fl_wwnn);
+ if (bottom->connection_features & FSF_FEATURE_NPIV_MODE)
+ fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
+ else
+ fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
+ break;
+ case FSF_TOPO_AL:
+ fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
+ fallthrough;
+ default:
+ fc_host_fabric_name(shost) = 0;
+ break;
+ }
+}
+
+void zfcp_scsi_shost_update_port_data(
+ struct zfcp_adapter *const adapter,
+ const struct fsf_qtcb_bottom_port *const bottom)
+{
+ struct Scsi_Host *const shost = adapter->scsi_host;
+
+ if (shost == NULL)
+ return;
+
+ fc_host_permanent_port_name(shost) = bottom->wwpn;
+ fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
+ fc_host_supported_speeds(shost) =
+ zfcp_fsf_convert_portspeed(bottom->supported_speed);
+ memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
+ FC_FC4_LIST_SIZE);
+ memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
+ FC_FC4_LIST_SIZE);
+}
+
struct fc_function_template zfcp_transport_functions = {
.show_starget_port_id = 1,
.show_starget_port_name = 1,
@@ -849,6 +967,10 @@
.show_host_supported_speeds = 1,
.show_host_maxframe_size = 1,
.show_host_serial_number = 1,
+ .show_host_manufacturer = 1,
+ .show_host_model = 1,
+ .show_host_hardware_version = 1,
+ .show_host_firmware_version = 1,
.get_fc_host_stats = zfcp_scsi_get_fc_host_stats,
.reset_fc_host_stats = zfcp_scsi_reset_fc_host_stats,
.set_rport_dev_loss_tmo = zfcp_scsi_set_rport_dev_loss_tmo,
@@ -864,5 +986,6 @@
.show_host_symbolic_name = 1,
.show_host_speed = 1,
.show_host_port_id = 1,
+ .show_host_fabric_name = 1,
.dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
};
--
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