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path: root/drivers/s390/net/ism_drv.c
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Diffstat (limited to 'drivers/s390/net/ism_drv.c')
-rw-r--r--drivers/s390/net/ism_drv.c94
1 files changed, 45 insertions, 49 deletions
diff --git a/drivers/s390/net/ism_drv.c b/drivers/s390/net/ism_drv.c
index 81aabbfbbe..43778b088f 100644
--- a/drivers/s390/net/ism_drv.c
+++ b/drivers/s390/net/ism_drv.c
@@ -36,6 +36,7 @@ static struct ism_client *clients[MAX_CLIENTS]; /* use an array rather than */
/* a list for fast mapping */
static u8 max_client;
static DEFINE_MUTEX(clients_lock);
+static bool ism_v2_capable;
struct ism_dev_list {
struct list_head list;
struct mutex mutex; /* protects ism device list */
@@ -291,13 +292,16 @@ out:
static void ism_free_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
{
clear_bit(dmb->sba_idx, ism->sba_bitmap);
- dma_free_coherent(&ism->pdev->dev, dmb->dmb_len,
- dmb->cpu_addr, dmb->dma_addr);
+ dma_unmap_page(&ism->pdev->dev, dmb->dma_addr, dmb->dmb_len,
+ DMA_FROM_DEVICE);
+ folio_put(virt_to_folio(dmb->cpu_addr));
}
static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
{
+ struct folio *folio;
unsigned long bit;
+ int rc;
if (PAGE_ALIGN(dmb->dmb_len) > dma_get_max_seg_size(&ism->pdev->dev))
return -EINVAL;
@@ -314,14 +318,30 @@ static int ism_alloc_dmb(struct ism_dev *ism, struct ism_dmb *dmb)
test_and_set_bit(dmb->sba_idx, ism->sba_bitmap))
return -EINVAL;
- dmb->cpu_addr = dma_alloc_coherent(&ism->pdev->dev, dmb->dmb_len,
- &dmb->dma_addr,
- GFP_KERNEL | __GFP_NOWARN |
- __GFP_NOMEMALLOC | __GFP_NORETRY);
- if (!dmb->cpu_addr)
- clear_bit(dmb->sba_idx, ism->sba_bitmap);
+ folio = folio_alloc(GFP_KERNEL | __GFP_NOWARN | __GFP_NOMEMALLOC |
+ __GFP_NORETRY, get_order(dmb->dmb_len));
- return dmb->cpu_addr ? 0 : -ENOMEM;
+ if (!folio) {
+ rc = -ENOMEM;
+ goto out_bit;
+ }
+
+ dmb->cpu_addr = folio_address(folio);
+ dmb->dma_addr = dma_map_page(&ism->pdev->dev,
+ virt_to_page(dmb->cpu_addr), 0,
+ dmb->dmb_len, DMA_FROM_DEVICE);
+ if (dma_mapping_error(&ism->pdev->dev, dmb->dma_addr)) {
+ rc = -ENOMEM;
+ goto out_free;
+ }
+
+ return 0;
+
+out_free:
+ kfree(dmb->cpu_addr);
+out_bit:
+ clear_bit(dmb->sba_idx, ism->sba_bitmap);
+ return rc;
}
int ism_register_dmb(struct ism_dev *ism, struct ism_dmb *dmb,
@@ -443,32 +463,6 @@ int ism_move(struct ism_dev *ism, u64 dmb_tok, unsigned int idx, bool sf,
}
EXPORT_SYMBOL_GPL(ism_move);
-static struct ism_systemeid SYSTEM_EID = {
- .seid_string = "IBM-SYSZ-ISMSEID00000000",
- .serial_number = "0000",
- .type = "0000",
-};
-
-static void ism_create_system_eid(void)
-{
- struct cpuid id;
- u16 ident_tail;
- char tmp[5];
-
- get_cpu_id(&id);
- ident_tail = (u16)(id.ident & ISM_IDENT_MASK);
- snprintf(tmp, 5, "%04X", ident_tail);
- memcpy(&SYSTEM_EID.serial_number, tmp, 4);
- snprintf(tmp, 5, "%04X", id.machine);
- memcpy(&SYSTEM_EID.type, tmp, 4);
-}
-
-u8 *ism_get_seid(void)
-{
- return SYSTEM_EID.seid_string;
-}
-EXPORT_SYMBOL_GPL(ism_get_seid);
-
static void ism_handle_event(struct ism_dev *ism)
{
struct ism_event *entry;
@@ -560,7 +554,9 @@ static int ism_dev_init(struct ism_dev *ism)
if (!ism_add_vlan_id(ism, ISM_RESERVED_VLANID))
/* hardware is V2 capable */
- ism_create_system_eid();
+ ism_v2_capable = true;
+ else
+ ism_v2_capable = false;
mutex_lock(&ism_dev_list.mutex);
mutex_lock(&clients_lock);
@@ -665,8 +661,7 @@ static void ism_dev_exit(struct ism_dev *ism)
}
mutex_unlock(&clients_lock);
- if (SYSTEM_EID.serial_number[0] != '0' ||
- SYSTEM_EID.type[0] != '0')
+ if (ism_v2_capable)
ism_del_vlan_id(ism, ISM_RESERVED_VLANID);
unregister_ieq(ism);
unregister_sba(ism);
@@ -743,10 +738,10 @@ static int ism_query_rgid(struct ism_dev *ism, u64 rgid, u32 vid_valid,
return ism_cmd(ism, &cmd);
}
-static int smcd_query_rgid(struct smcd_dev *smcd, u64 rgid, u32 vid_valid,
- u32 vid)
+static int smcd_query_rgid(struct smcd_dev *smcd, struct smcd_gid *rgid,
+ u32 vid_valid, u32 vid)
{
- return ism_query_rgid(smcd->priv, rgid, vid_valid, vid);
+ return ism_query_rgid(smcd->priv, rgid->gid, vid_valid, vid);
}
static int smcd_register_dmb(struct smcd_dev *smcd, struct smcd_dmb *dmb,
@@ -797,10 +792,11 @@ static int ism_signal_ieq(struct ism_dev *ism, u64 rgid, u32 trigger_irq,
return ism_cmd(ism, &cmd);
}
-static int smcd_signal_ieq(struct smcd_dev *smcd, u64 rgid, u32 trigger_irq,
- u32 event_code, u64 info)
+static int smcd_signal_ieq(struct smcd_dev *smcd, struct smcd_gid *rgid,
+ u32 trigger_irq, u32 event_code, u64 info)
{
- return ism_signal_ieq(smcd->priv, rgid, trigger_irq, event_code, info);
+ return ism_signal_ieq(smcd->priv, rgid->gid,
+ trigger_irq, event_code, info);
}
static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
@@ -812,8 +808,7 @@ static int smcd_move(struct smcd_dev *smcd, u64 dmb_tok, unsigned int idx,
static int smcd_supports_v2(void)
{
- return SYSTEM_EID.serial_number[0] != '0' ||
- SYSTEM_EID.type[0] != '0';
+ return ism_v2_capable;
}
static u64 ism_get_local_gid(struct ism_dev *ism)
@@ -821,9 +816,11 @@ static u64 ism_get_local_gid(struct ism_dev *ism)
return ism->local_gid;
}
-static u64 smcd_get_local_gid(struct smcd_dev *smcd)
+static void smcd_get_local_gid(struct smcd_dev *smcd,
+ struct smcd_gid *smcd_gid)
{
- return ism_get_local_gid(smcd->priv);
+ smcd_gid->gid = ism_get_local_gid(smcd->priv);
+ smcd_gid->gid_ext = 0;
}
static u16 ism_get_chid(struct ism_dev *ism)
@@ -857,7 +854,6 @@ static const struct smcd_ops ism_ops = {
.signal_event = smcd_signal_ieq,
.move_data = smcd_move,
.supports_v2 = smcd_supports_v2,
- .get_system_eid = ism_get_seid,
.get_local_gid = smcd_get_local_gid,
.get_chid = smcd_get_chid,
.get_dev = smcd_get_dev,