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Date: Tue, 14 Jun 2011 14:32:38 +0300
From: "Vlad Zolotarov" <vladz@...adcom.com>
To: "Dave Miller" <davem@...emloft.net>
cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"Eilon Greenstein" <eilong@...adcom.com>,
"Dmitry Kravkov" <dmitry@...adcom.com>,
"Yaniv Rosner" <yaniv.rosner@...adcom.com>
Subject: [PATCH net-next 1/24] cnic: Move indexing function pointers to
struct kcq_info
From: Michael Chan <mchan@...adcom.com>
The hardware indexing scheme for the FCoE kcq will change in the upcoming
firmware. This patch will cope with the change easily.
Signed-off-by: Michael Chan <mchan@...adcom.com>
Signed-off-by: Vladislav Zolotarov <vladz@...adcom.com>
---
drivers/net/cnic.c | 84 ++++++++++++++++++++++++++-------------------------
drivers/net/cnic.h | 5 ++-
2 files changed, 46 insertions(+), 43 deletions(-)
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 363c7f3..07f1b13 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -900,24 +900,56 @@ static int cnic_alloc_context(struct cnic_dev *dev)
return 0;
}
-static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info)
+static u16 cnic_bnx2_next_idx(u16 idx)
+{
+ return idx + 1;
+}
+
+static u16 cnic_bnx2_hw_idx(u16 idx)
+{
+ return idx;
+}
+
+static u16 cnic_bnx2x_next_idx(u16 idx)
{
- int err, i, is_bnx2 = 0;
+ idx++;
+ if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
+ idx++;
+
+ return idx;
+}
+
+static u16 cnic_bnx2x_hw_idx(u16 idx)
+{
+ if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
+ idx++;
+ return idx;
+}
+
+static int cnic_alloc_kcq(struct cnic_dev *dev, struct kcq_info *info,
+ bool use_pg_tbl)
+{
+ int err, i, use_page_tbl = 0;
struct kcqe **kcq;
- if (test_bit(CNIC_F_BNX2_CLASS, &dev->flags))
- is_bnx2 = 1;
+ if (use_pg_tbl)
+ use_page_tbl = 1;
- err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, is_bnx2);
+ err = cnic_alloc_dma(dev, &info->dma, KCQ_PAGE_CNT, use_page_tbl);
if (err)
return err;
kcq = (struct kcqe **) info->dma.pg_arr;
info->kcq = kcq;
- if (is_bnx2)
+ info->next_idx = cnic_bnx2_next_idx;
+ info->hw_idx = cnic_bnx2_hw_idx;
+ if (use_pg_tbl)
return 0;
+ info->next_idx = cnic_bnx2x_next_idx;
+ info->hw_idx = cnic_bnx2x_hw_idx;
+
for (i = 0; i < KCQ_PAGE_CNT; i++) {
struct bnx2x_bd_chain_next *next =
(struct bnx2x_bd_chain_next *) &kcq[i][MAX_KCQE_CNT];
@@ -1060,7 +1092,7 @@ static int cnic_alloc_bnx2_resc(struct cnic_dev *dev)
goto error;
cp->kwq = (struct kwqe **) cp->kwq_info.pg_arr;
- ret = cnic_alloc_kcq(dev, &cp->kcq1);
+ ret = cnic_alloc_kcq(dev, &cp->kcq1, true);
if (ret)
goto error;
@@ -1196,12 +1228,12 @@ static int cnic_alloc_bnx2x_resc(struct cnic_dev *dev)
j++;
}
- ret = cnic_alloc_kcq(dev, &cp->kcq1);
+ ret = cnic_alloc_kcq(dev, &cp->kcq1, false);
if (ret)
goto error;
if (BNX2X_CHIP_IS_E2(cp->chip_id)) {
- ret = cnic_alloc_kcq(dev, &cp->kcq2);
+ ret = cnic_alloc_kcq(dev, &cp->kcq2, false);
if (ret)
goto error;
}
@@ -2652,32 +2684,6 @@ end:
cnic_spq_completion(dev, DRV_CTL_RET_L5_SPQ_CREDIT_CMD, comp);
}
-static u16 cnic_bnx2_next_idx(u16 idx)
-{
- return idx + 1;
-}
-
-static u16 cnic_bnx2_hw_idx(u16 idx)
-{
- return idx;
-}
-
-static u16 cnic_bnx2x_next_idx(u16 idx)
-{
- idx++;
- if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
- idx++;
-
- return idx;
-}
-
-static u16 cnic_bnx2x_hw_idx(u16 idx)
-{
- if ((idx & MAX_KCQE_CNT) == MAX_KCQE_CNT)
- idx++;
- return idx;
-}
-
static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
{
struct cnic_local *cp = dev->cnic_priv;
@@ -2688,12 +2694,12 @@ static int cnic_get_kcqes(struct cnic_dev *dev, struct kcq_info *info)
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);
+ hw_prod = info->hw_idx(hw_prod);
while ((i != hw_prod) && (kcqe_cnt < MAX_COMPLETED_KCQE)) {
kcqe = &info->kcq[KCQ_PG(ri)][KCQ_IDX(ri)];
cp->completed_kcq[kcqe_cnt++] = kcqe;
- i = cp->next_idx(i);
+ i = info->next_idx(i);
ri = i & MAX_KCQ_IDX;
if (likely(!(kcqe->kcqe_op_flag & KCQE_FLAGS_NEXT))) {
last_cnt = kcqe_cnt;
@@ -5227,8 +5233,6 @@ static struct cnic_dev *init_bnx2_cnic(struct net_device *dev)
cp->enable_int = cnic_enable_bnx2_int;
cp->disable_int_sync = cnic_disable_bnx2_int_sync;
cp->close_conn = cnic_close_bnx2_conn;
- cp->next_idx = cnic_bnx2_next_idx;
- cp->hw_idx = cnic_bnx2_hw_idx;
return cdev;
cnic_err:
@@ -5294,8 +5298,6 @@ static struct cnic_dev *init_bnx2x_cnic(struct net_device *dev)
else
cp->ack_int = cnic_ack_bnx2x_msix;
cp->close_conn = cnic_close_bnx2x_conn;
- cp->next_idx = cnic_bnx2x_next_idx;
- cp->hw_idx = cnic_bnx2x_hw_idx;
return cdev;
}
diff --git a/drivers/net/cnic.h b/drivers/net/cnic.h
index 3367a6d3..eb11821 100644
--- a/drivers/net/cnic.h
+++ b/drivers/net/cnic.h
@@ -185,6 +185,9 @@ struct kcq_info {
u16 sw_prod_idx;
u16 *status_idx_ptr;
u32 io_addr;
+
+ u16 (*next_idx)(u16);
+ u16 (*hw_idx)(u16);
};
struct iro {
@@ -332,8 +335,6 @@ struct cnic_local {
void (*disable_int_sync)(struct cnic_dev *);
void (*ack_int)(struct cnic_dev *);
void (*close_conn)(struct cnic_sock *, u32 opcode);
- u16 (*next_idx)(u16);
- u16 (*hw_idx)(u16);
};
struct bnx2x_bd_chain_next {
--
1.7.4.1
--
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