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_aux.c | 99 +++++++++++++++----------------------------------
1 files changed, 31 insertions(+), 68 deletions(-)
diff --git a/kernel/drivers/s390/scsi/zfcp_aux.c b/kernel/drivers/s390/scsi/zfcp_aux.c
index d1b531f..36c2bd2 100644
--- a/kernel/drivers/s390/scsi/zfcp_aux.c
+++ b/kernel/drivers/s390/scsi/zfcp_aux.c
@@ -4,7 +4,7 @@
*
* Module interface and handling of zfcp data structures.
*
- * Copyright IBM Corp. 2002, 2013
+ * Copyright IBM Corp. 2002, 2020
*/
/*
@@ -25,6 +25,7 @@
* Martin Petermann
* Sven Schuetz
* Steffen Maier
+ * Benjamin Block
*/
#define KMSG_COMPONENT "zfcp"
@@ -36,6 +37,7 @@
#include "zfcp_ext.h"
#include "zfcp_fc.h"
#include "zfcp_reqlist.h"
+#include "zfcp_diag.h"
#define ZFCP_BUS_ID_SIZE 20
@@ -123,6 +125,9 @@
static int __init zfcp_module_init(void)
{
int retval = -ENOMEM;
+
+ if (zfcp_experimental_dix)
+ pr_warn("DIX is enabled. It is experimental and might cause problems\n");
zfcp_fsf_qtcb_cache = zfcp_cache_hw_align("zfcp_fsf_qtcb",
sizeof(struct fsf_qtcb));
@@ -248,30 +253,23 @@
static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
{
- if (adapter->pool.erp_req)
- mempool_destroy(adapter->pool.erp_req);
- if (adapter->pool.scsi_req)
- mempool_destroy(adapter->pool.scsi_req);
- if (adapter->pool.scsi_abort)
- mempool_destroy(adapter->pool.scsi_abort);
- if (adapter->pool.qtcb_pool)
- mempool_destroy(adapter->pool.qtcb_pool);
- if (adapter->pool.status_read_req)
- mempool_destroy(adapter->pool.status_read_req);
- if (adapter->pool.sr_data)
- mempool_destroy(adapter->pool.sr_data);
- if (adapter->pool.gid_pn)
- mempool_destroy(adapter->pool.gid_pn);
+ mempool_destroy(adapter->pool.erp_req);
+ mempool_destroy(adapter->pool.scsi_req);
+ mempool_destroy(adapter->pool.scsi_abort);
+ mempool_destroy(adapter->pool.qtcb_pool);
+ mempool_destroy(adapter->pool.status_read_req);
+ mempool_destroy(adapter->pool.sr_data);
+ mempool_destroy(adapter->pool.gid_pn);
}
/**
* zfcp_status_read_refill - refill the long running status_read_requests
* @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled
*
- * Returns: 0 on success, 1 otherwise
- *
- * if there are 16 or more status_read requests missing an adapter_reopen
- * is triggered
+ * Return:
+ * * 0 on success meaning at least one status read is pending
+ * * 1 if posting failed and not a single status read buffer is pending,
+ * also triggers adapter reopen recovery
*/
int zfcp_status_read_refill(struct zfcp_adapter *adapter)
{
@@ -360,6 +358,9 @@
adapter->erp_action.adapter = adapter;
+ if (zfcp_diag_adapter_setup(adapter))
+ goto failed;
+
if (zfcp_qdio_setup(adapter))
goto failed;
@@ -406,14 +407,15 @@
&zfcp_sysfs_adapter_attrs))
goto failed;
+ if (zfcp_diag_sysfs_setup(adapter))
+ goto failed;
+
/* report size limit per scatter-gather segment */
- adapter->dma_parms.max_segment_size = ZFCP_QDIO_SBALE_LEN;
adapter->ccw_device->dev.dma_parms = &adapter->dma_parms;
adapter->stat_read_buf_num = FSF_STATUS_READS_RECOM;
- if (!zfcp_scsi_adapter_register(adapter))
- return adapter;
+ return adapter;
failed:
zfcp_adapter_unregister(adapter);
@@ -431,6 +433,7 @@
zfcp_fc_wka_ports_force_offline(adapter->gs);
zfcp_scsi_adapter_unregister(adapter);
+ zfcp_diag_sysfs_destroy(adapter);
sysfs_remove_group(&cdev->dev.kobj, &zfcp_sysfs_adapter_attrs);
zfcp_erp_thread_kill(adapter);
@@ -454,6 +457,7 @@
dev_set_drvdata(&adapter->ccw_device->dev, NULL);
zfcp_fc_gs_destroy(adapter);
zfcp_free_low_mem_buffers(adapter);
+ zfcp_diag_adapter_free(adapter);
kfree(adapter->req_list);
kfree(adapter->fc_stats);
kfree(adapter->stats_reset_data);
@@ -493,12 +497,12 @@
if (port) {
put_device(&port->dev);
retval = -EEXIST;
- goto err_out;
+ goto err_put;
}
port = kzalloc(sizeof(struct zfcp_port), GFP_KERNEL);
if (!port)
- goto err_out;
+ goto err_put;
rwlock_init(&port->unit_list_lock);
INIT_LIST_HEAD(&port->unit_list);
@@ -521,7 +525,7 @@
if (dev_set_name(&port->dev, "0x%016llx", (unsigned long long)wwpn)) {
kfree(port);
- goto err_out;
+ goto err_put;
}
retval = -EINVAL;
@@ -538,49 +542,8 @@
return port;
-err_out:
+err_put:
zfcp_ccw_adapter_put(adapter);
+err_out:
return ERR_PTR(retval);
-}
-
-/**
- * zfcp_sg_free_table - free memory used by scatterlists
- * @sg: pointer to scatterlist
- * @count: number of scatterlist which are to be free'ed
- * the scatterlist are expected to reference pages always
- */
-void zfcp_sg_free_table(struct scatterlist *sg, int count)
-{
- int i;
-
- for (i = 0; i < count; i++, sg++)
- if (sg)
- free_page((unsigned long) sg_virt(sg));
- else
- break;
-}
-
-/**
- * zfcp_sg_setup_table - init scatterlist and allocate, assign buffers
- * @sg: pointer to struct scatterlist
- * @count: number of scatterlists which should be assigned with buffers
- * of size page
- *
- * Returns: 0 on success, -ENOMEM otherwise
- */
-int zfcp_sg_setup_table(struct scatterlist *sg, int count)
-{
- void *addr;
- int i;
-
- sg_init_table(sg, count);
- for (i = 0; i < count; i++, sg++) {
- addr = (void *) get_zeroed_page(GFP_KERNEL);
- if (!addr) {
- zfcp_sg_free_table(sg, i);
- return -ENOMEM;
- }
- sg_set_buf(sg, addr, PAGE_SIZE);
- }
- return 0;
}
--
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