redonkable/alistair23-linux
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cnic: Restructure kcq processing.

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By doing more work in the common function cnic_get_kcqes(), and
making full use of the kcq_info structure.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan 2010-06-24 14:58:40 +00:00 committed by David S. Miller
parent e6c2889478
commit 644b9d4f8b
1 changed files with 22 additions and 54 deletions
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76
drivers/net/cnic.c
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@ -2141,18 +2141,20 @@ static u16 cnic_bnx2x_hw_idx(u16 idx)
return idx;
}
static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
{
struct cnic_local *cp = dev->cnic_priv;
u16 i, ri, last;
u16 i, ri, hw_prod, last;
struct kcqe *kcqe;
int kcqe_cnt = 0, last_cnt = 0;
i = ri = last = *sw_prod;
i = ri = last = info->sw_prod_idx;
ri &= MAX_KCQ_IDX;
hw_prod = *info->hw_prod_idx_ptr;
hw_prod = cp->hw_idx(hw_prod);
while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
kcqe = &cp->kcq1.kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
cp->completed_kcq[kcqe_cnt++] = kcqe;
i = cp->next_idx(i);
ri = i & MAX_KCQ_IDX;
@ -2162,7 +2164,7 @@ static int cnic_get_kcqes(struct cnic_dev *dev, u16 hw_prod, u16 *sw_prod)
}
}
*sw_prod = last;
info->sw_prod_idx = last;
return last_cnt;
}
@ -2224,10 +2226,8 @@ static void cnic_chk_pkt_rings(struct cnic_local *cp)
static int cnic_service_bnx2(void *data, void *status_blk)
{
struct cnic_dev *dev = data;
struct status_block *sblk = status_blk;
struct cnic_local *cp = dev->cnic_priv;
u32 status_idx = sblk->status_idx;
u16 hw_prod, sw_prod;
u32 status_idx = *cp->kcq1.status_idx_ptr;
int kcqe_cnt;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
@ -2235,29 +2235,20 @@ static int cnic_service_bnx2(void *data, void *status_blk)
cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
hw_prod = sblk->status_completion_producer_index;
sw_prod = cp->kcq1.sw_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that status_blk fields can change. */
barrier();
if (status_idx != sblk->status_idx) {
status_idx = sblk->status_idx;
if (status_idx != *cp->kcq1.status_idx_ptr) {
status_idx = *cp->kcq1.status_idx_ptr;
cp->kwq_con_idx = *cp->kwq_con_idx_ptr;
hw_prod = sblk->status_completion_producer_index;
} else
break;
}
done:
CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod);
cp->kcq1.sw_prod_idx = sw_prod;
CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
cnic_chk_pkt_rings(cp);
return status_idx;
@ -2268,34 +2259,25 @@ static void cnic_service_bnx2_msix(unsigned long data)
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
struct status_block_msix *status_blk = cp->status_blk.bnx2;
u32 status_idx = status_blk->status_idx;
u16 hw_prod, sw_prod;
u32 status_idx = *cp->kcq1.status_idx_ptr;
int kcqe_cnt;
cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
hw_prod = status_blk->status_completion_producer_index;
sw_prod = cp->kcq1.sw_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that status_blk fields can change. */
barrier();
if (status_idx != status_blk->status_idx) {
status_idx = status_blk->status_idx;
if (status_idx != *cp->kcq1.status_idx_ptr) {
status_idx = *cp->kcq1.status_idx_ptr;
cp->kwq_con_idx = status_blk->status_cmd_consumer_index;
hw_prod = status_blk->status_completion_producer_index;
} else
break;
}
done:
CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod);
cp->kcq1.sw_prod_idx = sw_prod;
CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx);
cnic_chk_pkt_rings(cp);
@ -2360,41 +2342,27 @@ static void cnic_service_bnx2x_bh(unsigned long data)
{
struct cnic_dev *dev = (struct cnic_dev *) data;
struct cnic_local *cp = dev->cnic_priv;
u16 hw_prod, sw_prod;
struct cstorm_status_block_c *sblk =
&cp->status_blk.bnx2x->c_status_block;
u32 status_idx = sblk->status_block_index;
u32 status_idx = *cp->kcq1.status_idx_ptr;
int kcqe_cnt;
if (unlikely(!test_bit(CNIC_F_CNIC_UP, &dev->flags)))
return;
hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
hw_prod = cp->hw_idx(hw_prod);
sw_prod = cp->kcq1.sw_prod_idx;
while (sw_prod != hw_prod) {
kcqe_cnt = cnic_get_kcqes(dev, hw_prod, &sw_prod);
if (kcqe_cnt == 0)
goto done;
while ((kcqe_cnt = cnic_get_kcqes(dev, &cp->kcq1))) {
service_kcqes(dev, kcqe_cnt);
/* Tell compiler that sblk fields can change. */
barrier();
if (status_idx == sblk->status_block_index)
if (status_idx == *cp->kcq1.status_idx_ptr)
break;
status_idx = sblk->status_block_index;
hw_prod = sblk->index_values[HC_INDEX_C_ISCSI_EQ_CONS];
hw_prod = cp->hw_idx(hw_prod);
status_idx = *cp->kcq1.status_idx_ptr;
}
done:
CNIC_WR16(dev, cp->kcq1.io_addr, sw_prod + MAX_KCQ_IDX);
CNIC_WR16(dev, cp->kcq1.io_addr, cp->kcq1.sw_prod_idx + MAX_KCQ_IDX);
cnic_ack_bnx2x_int(dev, cp->status_blk_num, CSTORM_ID,
status_idx, IGU_INT_ENABLE, 1);
cp->kcq1.sw_prod_idx = sw_prod;
}
static int cnic_service_bnx2x(void *data, void *status_blk)