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authorJan Glauber <jang@linux.vnet.ibm.com>2011-06-06 14:14:40 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-06-06 14:14:56 +0200
commit3ec90878bade9280dee87c9e27d759f1cee07e70 (patch)
tree54f07b9d840ee98e78370b8843374f317fa6f8c8 /drivers/s390/net
parent9950f8be3f379e36be73be958ec5cf6c15eac0b2 (diff)
downloadop-kernel-dev-3ec90878bade9280dee87c9e27d759f1cee07e70.zip
op-kernel-dev-3ec90878bade9280dee87c9e27d759f1cee07e70.tar.gz
[S390] qdio: Split SBAL entry flags
The qdio SBAL entry flag is made-up of four different values that are independent of one another. Some of the bits are reserved by the hardware and should not be changed by qdio. Currently all four values are overwritten since the SBAL entry flag is defined as an u32. Split the SBAL entry flag into four u8's as defined by the hardware and don't touch the reserved bits. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/net')
-rw-r--r--drivers/s390/net/qeth_core.h2
-rw-r--r--drivers/s390/net/qeth_core_main.c57
2 files changed, 31 insertions, 28 deletions
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 55c6aa1..d3cee33 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -361,7 +361,7 @@ enum qeth_header_ids {
static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
{
- return (sbale->flags & SBAL_FLAGS_LAST_ENTRY);
+ return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
}
enum qeth_qdio_buffer_states {
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 503678a..dd08f7b 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -890,7 +890,7 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
struct sk_buff *skb;
/* is PCI flag set on buffer? */
- if (buf->buffer->element[0].flags & 0x40)
+ if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
atomic_dec(&queue->set_pci_flags_count);
skb = skb_dequeue(&buf->skb_list);
@@ -906,9 +906,11 @@ static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
buf->is_header[i] = 0;
buf->buffer->element[i].length = 0;
buf->buffer->element[i].addr = NULL;
- buf->buffer->element[i].flags = 0;
+ buf->buffer->element[i].eflags = 0;
+ buf->buffer->element[i].sflags = 0;
}
- buf->buffer->element[15].flags = 0;
+ buf->buffer->element[15].eflags = 0;
+ buf->buffer->element[15].sflags = 0;
buf->next_element_to_fill = 0;
atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY);
}
@@ -2368,9 +2370,10 @@ static int qeth_init_input_buffer(struct qeth_card *card,
buf->buffer->element[i].length = PAGE_SIZE;
buf->buffer->element[i].addr = pool_entry->elements[i];
if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
- buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY;
+ buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
else
- buf->buffer->element[i].flags = 0;
+ buf->buffer->element[i].eflags = 0;
+ buf->buffer->element[i].sflags = 0;
}
return 0;
}
@@ -2718,11 +2721,11 @@ int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
if (qdio_error) {
QETH_CARD_TEXT(card, 2, dbftext);
QETH_CARD_TEXT_(card, 2, " F15=%02X",
- buf->element[15].flags & 0xff);
+ buf->element[15].sflags);
QETH_CARD_TEXT_(card, 2, " F14=%02X",
- buf->element[14].flags & 0xff);
+ buf->element[14].sflags);
QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
- if ((buf->element[15].flags & 0xff) == 0x12) {
+ if ((buf->element[15].sflags) == 0x12) {
card->stats.rx_dropped++;
return 0;
} else
@@ -2798,7 +2801,7 @@ EXPORT_SYMBOL_GPL(qeth_queue_input_buffer);
static int qeth_handle_send_error(struct qeth_card *card,
struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
{
- int sbalf15 = buffer->buffer->element[15].flags & 0xff;
+ int sbalf15 = buffer->buffer->element[15].sflags;
QETH_CARD_TEXT(card, 6, "hdsnderr");
if (card->info.type == QETH_CARD_TYPE_IQD) {
@@ -2907,8 +2910,8 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
for (i = index; i < index + count; ++i) {
buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q];
- buf->buffer->element[buf->next_element_to_fill - 1].flags |=
- SBAL_FLAGS_LAST_ENTRY;
+ buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
+ SBAL_EFLAGS_LAST_ENTRY;
if (queue->card->info.type == QETH_CARD_TYPE_IQD)
continue;
@@ -2921,7 +2924,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
/* it's likely that we'll go to packing
* mode soon */
atomic_inc(&queue->set_pci_flags_count);
- buf->buffer->element[0].flags |= 0x40;
+ buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
}
} else {
if (!atomic_read(&queue->set_pci_flags_count)) {
@@ -2934,7 +2937,7 @@ static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
* further send was requested by the stack
*/
atomic_inc(&queue->set_pci_flags_count);
- buf->buffer->element[0].flags |= 0x40;
+ buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
}
}
}
@@ -3180,20 +3183,20 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
if (!length) {
if (first_lap)
if (skb_shinfo(skb)->nr_frags)
- buffer->element[element].flags =
- SBAL_FLAGS_FIRST_FRAG;
+ buffer->element[element].eflags =
+ SBAL_EFLAGS_FIRST_FRAG;
else
- buffer->element[element].flags = 0;
+ buffer->element[element].eflags = 0;
else
- buffer->element[element].flags =
- SBAL_FLAGS_MIDDLE_FRAG;
+ buffer->element[element].eflags =
+ SBAL_EFLAGS_MIDDLE_FRAG;
} else {
if (first_lap)
- buffer->element[element].flags =
- SBAL_FLAGS_FIRST_FRAG;
+ buffer->element[element].eflags =
+ SBAL_EFLAGS_FIRST_FRAG;
else
- buffer->element[element].flags =
- SBAL_FLAGS_MIDDLE_FRAG;
+ buffer->element[element].eflags =
+ SBAL_EFLAGS_MIDDLE_FRAG;
}
data += length_here;
element++;
@@ -3205,12 +3208,12 @@ static inline void __qeth_fill_buffer(struct sk_buff *skb,
buffer->element[element].addr = (char *)page_to_phys(frag->page)
+ frag->page_offset;
buffer->element[element].length = frag->size;
- buffer->element[element].flags = SBAL_FLAGS_MIDDLE_FRAG;
+ buffer->element[element].eflags = SBAL_EFLAGS_MIDDLE_FRAG;
element++;
}
- if (buffer->element[element - 1].flags)
- buffer->element[element - 1].flags = SBAL_FLAGS_LAST_FRAG;
+ if (buffer->element[element - 1].eflags)
+ buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
*next_element_to_fill = element;
}
@@ -3234,7 +3237,7 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
/*fill first buffer entry only with header information */
buffer->element[element].addr = skb->data;
buffer->element[element].length = hdr_len;
- buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
+ buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->next_element_to_fill++;
skb->data += hdr_len;
skb->len -= hdr_len;
@@ -3246,7 +3249,7 @@ static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
buffer->element[element].addr = hdr;
buffer->element[element].length = sizeof(struct qeth_hdr) +
hd_len;
- buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG;
+ buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
buf->is_header[element] = 1;
buf->next_element_to_fill++;
}
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