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path: root/drivers/scsi/libsrp.c
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Diffstat (limited to 'drivers/scsi/libsrp.c')
-rw-r--r--drivers/scsi/libsrp.c78
1 files changed, 42 insertions, 36 deletions
diff --git a/drivers/scsi/libsrp.c b/drivers/scsi/libsrp.c
index 89403b00e04..0707ecdbaa3 100644
--- a/drivers/scsi/libsrp.c
+++ b/drivers/scsi/libsrp.c
@@ -1,5 +1,5 @@
/*
- * SCSI RDAM Protocol lib functions
+ * SCSI RDMA Protocol lib functions
*
* Copyright (C) 2006 FUJITA Tomonori <tomof@acm.org>
*
@@ -19,10 +19,11 @@
* 02110-1301 USA
*/
#include <linux/err.h>
+#include <linux/slab.h>
#include <linux/kfifo.h>
#include <linux/scatterlist.h>
#include <linux/dma-mapping.h>
-#include <linux/pci.h>
+#include <linux/module.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_tcq.h>
@@ -40,7 +41,7 @@ enum srp_task_attributes {
/* tmp - will replace with SCSI logging stuff */
#define eprintk(fmt, args...) \
do { \
- printk("%s(%d) " fmt, __FUNCTION__, __LINE__, ##args); \
+ printk("%s(%d) " fmt, __func__, __LINE__, ##args); \
} while (0)
/* #define dprintk eprintk */
#define dprintk(fmt, args...)
@@ -59,19 +60,15 @@ static int srp_iu_pool_alloc(struct srp_queue *q, size_t max,
goto free_pool;
spin_lock_init(&q->lock);
- q->queue = kfifo_init((void *) q->pool, max * sizeof(void *),
- GFP_KERNEL, &q->lock);
- if (IS_ERR(q->queue))
- goto free_item;
+ kfifo_init(&q->queue, (void *) q->pool, max * sizeof(void *));
for (i = 0, iue = q->items; i < max; i++) {
- __kfifo_put(q->queue, (void *) &iue, sizeof(void *));
+ kfifo_in(&q->queue, (void *) &iue, sizeof(void *));
iue->sbuf = ring[i];
iue++;
}
return 0;
-free_item:
kfree(q->items);
free_pool:
kfree(q->pool);
@@ -125,6 +122,7 @@ static void srp_ring_free(struct device *dev, struct srp_buf **ring, size_t max,
dma_free_coherent(dev, size, ring[i]->buf, ring[i]->dma);
kfree(ring[i]);
}
+ kfree(ring);
}
int srp_target_alloc(struct srp_target *target, struct device *dev,
@@ -136,7 +134,7 @@ int srp_target_alloc(struct srp_target *target, struct device *dev,
INIT_LIST_HEAD(&target->cmd_queue);
target->dev = dev;
- target->dev->driver_data = target;
+ dev_set_drvdata(target->dev, target);
target->srp_iu_size = iu_size;
target->rx_ring_size = nr;
@@ -167,7 +165,11 @@ struct iu_entry *srp_iu_get(struct srp_target *target)
{
struct iu_entry *iue = NULL;
- kfifo_get(target->iu_queue.queue, (void *) &iue, sizeof(void *));
+ if (kfifo_out_locked(&target->iu_queue.queue, (void *) &iue,
+ sizeof(void *), &target->iu_queue.lock) != sizeof(void *)) {
+ WARN_ONCE(1, "unexpected fifo state");
+ return NULL;
+ }
if (!iue)
return iue;
iue->target = target;
@@ -179,7 +181,8 @@ EXPORT_SYMBOL_GPL(srp_iu_get);
void srp_iu_put(struct iu_entry *iue)
{
- kfifo_put(iue->target->iu_queue.queue, (void *) &iue, sizeof(void *));
+ kfifo_in_locked(&iue->target->iu_queue.queue, (void *) &iue,
+ sizeof(void *), &iue->target->iu_queue.lock);
}
EXPORT_SYMBOL_GPL(srp_iu_put);
@@ -193,18 +196,18 @@ static int srp_direct_data(struct scsi_cmnd *sc, struct srp_direct_buf *md,
if (dma_map) {
iue = (struct iu_entry *) sc->SCp.ptr;
- sg = sc->request_buffer;
+ sg = scsi_sglist(sc);
- dprintk("%p %u %u %d\n", iue, sc->request_bufflen,
- md->len, sc->use_sg);
+ dprintk("%p %u %u %d\n", iue, scsi_bufflen(sc),
+ md->len, scsi_sg_count(sc));
- nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg,
+ nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),
DMA_BIDIRECTIONAL);
if (!nsg) {
- printk("fail to map %p %d\n", iue, sc->use_sg);
+ printk("fail to map %p %d\n", iue, scsi_sg_count(sc));
return 0;
}
- len = min(sc->request_bufflen, md->len);
+ len = min(scsi_bufflen(sc), md->len);
} else
len = md->len;
@@ -225,16 +228,15 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
struct srp_direct_buf *md = NULL;
struct scatterlist dummy, *sg = NULL;
dma_addr_t token = 0;
- long err;
- unsigned int done = 0;
+ int err = 0;
int nmd, nsg = 0, len;
if (dma_map || ext_desc) {
iue = (struct iu_entry *) sc->SCp.ptr;
- sg = sc->request_buffer;
+ sg = scsi_sglist(sc);
dprintk("%p %u %u %d %d\n",
- iue, sc->request_bufflen, id->len,
+ iue, scsi_bufflen(sc), id->len,
cmd->data_in_desc_cnt, cmd->data_out_desc_cnt);
}
@@ -256,10 +258,11 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
sg_init_one(&dummy, md, id->table_desc.len);
sg_dma_address(&dummy) = token;
+ sg_dma_len(&dummy) = id->table_desc.len;
err = rdma_io(sc, &dummy, 1, &id->table_desc, 1, DMA_TO_DEVICE,
id->table_desc.len);
- if (err < 0) {
- eprintk("Error copying indirect table %ld\n", err);
+ if (err) {
+ eprintk("Error copying indirect table %d\n", err);
goto free_mem;
}
} else {
@@ -269,12 +272,14 @@ static int srp_indirect_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
rdma:
if (dma_map) {
- nsg = dma_map_sg(iue->target->dev, sg, sc->use_sg, DMA_BIDIRECTIONAL);
+ nsg = dma_map_sg(iue->target->dev, sg, scsi_sg_count(sc),
+ DMA_BIDIRECTIONAL);
if (!nsg) {
- eprintk("fail to map %p %d\n", iue, sc->use_sg);
+ eprintk("fail to map %p %d\n", iue, scsi_sg_count(sc));
+ err = -EIO;
goto free_mem;
}
- len = min(sc->request_bufflen, id->len);
+ len = min(scsi_bufflen(sc), id->len);
} else
len = id->len;
@@ -287,7 +292,7 @@ free_mem:
if (token && dma_map)
dma_free_coherent(iue->target->dev, id->table_desc.len, md, token);
- return done;
+ return err;
}
static int data_out_desc_size(struct srp_cmd *cmd)
@@ -325,7 +330,7 @@ int srp_transfer_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
int offset, err = 0;
u8 format;
- offset = cmd->add_cdb_len * 4;
+ offset = cmd->add_cdb_len & ~3;
dir = srp_cmd_direction(cmd);
if (dir == DMA_FROM_DEVICE)
@@ -352,7 +357,7 @@ int srp_transfer_data(struct scsi_cmnd *sc, struct srp_cmd *cmd,
break;
default:
eprintk("Unknown format %d %x\n", dir, format);
- break;
+ err = -EINVAL;
}
return err;
@@ -363,7 +368,7 @@ static int vscsis_data_length(struct srp_cmd *cmd, enum dma_data_direction dir)
{
struct srp_direct_buf *md;
struct srp_indirect_buf *id;
- int len = 0, offset = cmd->add_cdb_len * 4;
+ int len = 0, offset = cmd->add_cdb_len & ~3;
u8 fmt;
if (dir == DMA_TO_DEVICE)
@@ -392,7 +397,7 @@ static int vscsis_data_length(struct srp_cmd *cmd, enum dma_data_direction dir)
}
int srp_cmd_queue(struct Scsi_Host *shost, struct srp_cmd *cmd, void *info,
- u64 addr)
+ u64 itn_id, u64 addr)
{
enum dma_data_direction dir;
struct scsi_cmnd *sc;
@@ -425,10 +430,11 @@ int srp_cmd_queue(struct Scsi_Host *shost, struct srp_cmd *cmd, void *info,
sc->SCp.ptr = info;
memcpy(sc->cmnd, cmd->cdb, MAX_COMMAND_SIZE);
- sc->request_bufflen = len;
- sc->request_buffer = (void *) (unsigned long) addr;
+ sc->sdb.length = len;
+ sc->sdb.table.sgl = (void *) (unsigned long) addr;
sc->tag = tag;
- err = scsi_tgt_queue_command(sc, (struct scsi_lun *) &cmd->lun, cmd->tag);
+ err = scsi_tgt_queue_command(sc, itn_id, (struct scsi_lun *)&cmd->lun,
+ cmd->tag);
if (err)
scsi_host_put_command(shost, sc);
@@ -436,6 +442,6 @@ int srp_cmd_queue(struct Scsi_Host *shost, struct srp_cmd *cmd, void *info,
}
EXPORT_SYMBOL_GPL(srp_cmd_queue);
-MODULE_DESCRIPTION("SCSI RDAM Protocol lib functions");
+MODULE_DESCRIPTION("SCSI RDMA Protocol lib functions");
MODULE_AUTHOR("FUJITA Tomonori");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 08:04:45 +0000