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Message-Id: <1232723799-8620-10-git-send-email-ron.mercer@qlogic.com>
Date: Fri, 23 Jan 2009 07:16:28 -0800
From: Ron Mercer <ron.mercer@...gic.com>
To: davem@...emloft.net
Cc: netdev@...r.kernel.org, linux-driver@...gic.com,
ron.mercer@...gic.com
Subject: [PATCH 10/21] [next] qlge: Cleanup rx buffer allocations.
There were two paths to fill rx buffer queues. One used during
initialization and another at runtime. This patch causes the
same code to be used in both places.
Signed-off-by: Ron Mercer <ron.mercer@...gic.com>
---
drivers/net/qlge/qlge_main.c | 184 ++++++++++++++---------------------------
1 files changed, 63 insertions(+), 121 deletions(-)
diff --git a/drivers/net/qlge/qlge_main.c b/drivers/net/qlge/qlge_main.c
index f3fa375..55c0f91 100644
--- a/drivers/net/qlge/qlge_main.c
+++ b/drivers/net/qlge/qlge_main.c
@@ -2125,7 +2125,7 @@ static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring
for (i = 0; i < rx_ring->lbq_len; i++) {
lbq_desc = &rx_ring->lbq[i];
- if (lbq_desc->p.lbq_page) {
+ if (lbq_desc && lbq_desc->p.lbq_page) {
pci_unmap_page(qdev->pdev,
pci_unmap_addr(lbq_desc, mapaddr),
pci_unmap_len(lbq_desc, maplen),
@@ -2137,47 +2137,6 @@ static void ql_free_lbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring
}
}
-/*
- * Allocate and map a page for each element of the lbq.
- */
-static int ql_alloc_lbq_buffers(struct ql_adapter *qdev,
- struct rx_ring *rx_ring)
-{
- int i;
- struct bq_desc *lbq_desc;
- u64 map;
- __le64 *bq = rx_ring->lbq_base;
-
- for (i = 0; i < rx_ring->lbq_len; i++) {
- lbq_desc = &rx_ring->lbq[i];
- memset(lbq_desc, 0, sizeof(lbq_desc));
- lbq_desc->addr = bq;
- lbq_desc->index = i;
- lbq_desc->p.lbq_page = alloc_page(GFP_ATOMIC);
- if (unlikely(!lbq_desc->p.lbq_page)) {
- QPRINTK(qdev, IFUP, ERR, "failed alloc_page().\n");
- goto mem_error;
- } else {
- map = pci_map_page(qdev->pdev,
- lbq_desc->p.lbq_page,
- 0, PAGE_SIZE, PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(qdev->pdev, map)) {
- QPRINTK(qdev, IFUP, ERR,
- "PCI mapping failed.\n");
- goto mem_error;
- }
- pci_unmap_addr_set(lbq_desc, mapaddr, map);
- pci_unmap_len_set(lbq_desc, maplen, PAGE_SIZE);
- *lbq_desc->addr = cpu_to_le64(map);
- }
- bq++;
- }
- return 0;
-mem_error:
- ql_free_lbq_buffers(qdev, rx_ring);
- return -ENOMEM;
-}
-
static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring)
{
int i;
@@ -2185,11 +2144,7 @@ static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring
for (i = 0; i < rx_ring->sbq_len; i++) {
sbq_desc = &rx_ring->sbq[i];
- if (sbq_desc == NULL) {
- QPRINTK(qdev, IFUP, ERR, "sbq_desc %d is NULL.\n", i);
- return;
- }
- if (sbq_desc->p.skb) {
+ if (sbq_desc && sbq_desc->p.skb) {
pci_unmap_single(qdev->pdev,
pci_unmap_addr(sbq_desc, mapaddr),
pci_unmap_len(sbq_desc, maplen),
@@ -2200,63 +2155,68 @@ static void ql_free_sbq_buffers(struct ql_adapter *qdev, struct rx_ring *rx_ring
}
}
-/* Allocate and map an skb for each element of the sbq. */
-static int ql_alloc_sbq_buffers(struct ql_adapter *qdev,
+static void ql_free_rx_buffers(struct ql_adapter *qdev)
+{
+ int i;
+ struct rx_ring *rx_ring;
+
+ for (i = 0; i < qdev->rx_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ if (rx_ring->lbq)
+ ql_free_lbq_buffers(qdev, rx_ring);
+ if (rx_ring->sbq)
+ ql_free_sbq_buffers(qdev, rx_ring);
+ }
+}
+
+static void ql_alloc_rx_buffers(struct ql_adapter *qdev)
+{
+ struct rx_ring *rx_ring;
+ int i;
+
+ for (i = 0; i < qdev->rx_ring_count; i++) {
+ rx_ring = &qdev->rx_ring[i];
+ if (rx_ring->type != TX_Q)
+ ql_update_buffer_queues(qdev, rx_ring);
+ }
+}
+
+static void ql_init_lbq_ring(struct ql_adapter *qdev,
+ struct rx_ring *rx_ring)
+{
+ int i;
+ struct bq_desc *lbq_desc;
+ __le64 *bq = rx_ring->lbq_base;
+
+ memset(rx_ring->lbq, 0, rx_ring->lbq_len * sizeof(struct bq_desc));
+ for (i = 0; i < rx_ring->lbq_len; i++) {
+ lbq_desc = &rx_ring->lbq[i];
+ memset(lbq_desc, 0, sizeof(lbq_desc));
+ lbq_desc->index = i;
+ lbq_desc->addr = bq;
+ bq++;
+ }
+}
+
+static void ql_init_sbq_ring(struct ql_adapter *qdev,
struct rx_ring *rx_ring)
{
int i;
struct bq_desc *sbq_desc;
- struct sk_buff *skb;
- u64 map;
__le64 *bq = rx_ring->sbq_base;
+ memset(rx_ring->sbq, 0, rx_ring->sbq_len * sizeof(struct bq_desc));
for (i = 0; i < rx_ring->sbq_len; i++) {
sbq_desc = &rx_ring->sbq[i];
memset(sbq_desc, 0, sizeof(sbq_desc));
sbq_desc->index = i;
sbq_desc->addr = bq;
- skb = netdev_alloc_skb(qdev->ndev, rx_ring->sbq_buf_size);
- if (unlikely(!skb)) {
- /* Better luck next round */
- QPRINTK(qdev, IFUP, ERR,
- "small buff alloc failed for %d bytes at index %d.\n",
- rx_ring->sbq_buf_size, i);
- goto mem_err;
- }
- skb_reserve(skb, QLGE_SB_PAD);
- sbq_desc->p.skb = skb;
- /*
- * Map only half the buffer. Because the
- * other half may get some data copied to it
- * when the completion arrives.
- */
- map = pci_map_single(qdev->pdev,
- skb->data,
- rx_ring->sbq_buf_size / 2,
- PCI_DMA_FROMDEVICE);
- if (pci_dma_mapping_error(qdev->pdev, map)) {
- QPRINTK(qdev, IFUP, ERR, "PCI mapping failed.\n");
- goto mem_err;
- }
- pci_unmap_addr_set(sbq_desc, mapaddr, map);
- pci_unmap_len_set(sbq_desc, maplen, rx_ring->sbq_buf_size / 2);
- *sbq_desc->addr = cpu_to_le64(map);
bq++;
}
- return 0;
-mem_err:
- ql_free_sbq_buffers(qdev, rx_ring);
- return -ENOMEM;
}
-
static void ql_free_rx_resources(struct ql_adapter *qdev,
struct rx_ring *rx_ring)
{
- if (rx_ring->sbq_len)
- ql_free_sbq_buffers(qdev, rx_ring);
- if (rx_ring->lbq_len)
- ql_free_lbq_buffers(qdev, rx_ring);
-
/* Free the small buffer queue. */
if (rx_ring->sbq_base) {
pci_free_consistent(qdev->pdev,
@@ -2334,11 +2294,7 @@ static int ql_alloc_rx_resources(struct ql_adapter *qdev,
goto err_mem;
}
- if (ql_alloc_sbq_buffers(qdev, rx_ring)) {
- QPRINTK(qdev, IFUP, ERR,
- "Small buffer allocation failed.\n");
- goto err_mem;
- }
+ ql_init_sbq_ring(qdev, rx_ring);
}
if (rx_ring->lbq_len) {
@@ -2366,14 +2322,7 @@ static int ql_alloc_rx_resources(struct ql_adapter *qdev,
goto err_mem;
}
- /*
- * Allocate the buffers.
- */
- if (ql_alloc_lbq_buffers(qdev, rx_ring)) {
- QPRINTK(qdev, IFUP, ERR,
- "Large buffer allocation failed.\n");
- goto err_mem;
- }
+ ql_init_lbq_ring(qdev, rx_ring);
}
return 0;
@@ -2467,6 +2416,7 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
qdev->doorbell_area + (DB_PAGE_SIZE * (128 + rx_ring->cq_id));
int err = 0;
u16 bq_len;
+ u64 tmp;
/* Set up the shadow registers for this ring. */
rx_ring->prod_idx_sh_reg = shadow_reg;
@@ -2512,7 +2462,8 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
FLAGS_LI; /* Load irq delay values */
if (rx_ring->lbq_len) {
cqicb->flags |= FLAGS_LL; /* Load lbq values */
- *((u64 *) rx_ring->lbq_base_indirect) = rx_ring->lbq_base_dma;
+ tmp = (u64)rx_ring->lbq_base_dma;;
+ *((__le64 *) rx_ring->lbq_base_indirect) = cpu_to_le64(tmp);
cqicb->lbq_addr =
cpu_to_le64(rx_ring->lbq_base_indirect_dma);
bq_len = (rx_ring->lbq_buf_size == 65536) ? 0 :
@@ -2521,25 +2472,26 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
bq_len = (rx_ring->lbq_len == 65536) ? 0 :
(u16) rx_ring->lbq_len;
cqicb->lbq_len = cpu_to_le16(bq_len);
- rx_ring->lbq_prod_idx = rx_ring->lbq_len - 16;
+ rx_ring->lbq_prod_idx = 0;
rx_ring->lbq_curr_idx = 0;
- rx_ring->lbq_clean_idx = rx_ring->lbq_prod_idx;
- rx_ring->lbq_free_cnt = 16;
+ rx_ring->lbq_clean_idx = 0;
+ rx_ring->lbq_free_cnt = rx_ring->lbq_len;
}
if (rx_ring->sbq_len) {
cqicb->flags |= FLAGS_LS; /* Load sbq values */
- *((u64 *) rx_ring->sbq_base_indirect) = rx_ring->sbq_base_dma;
+ tmp = (u64)rx_ring->sbq_base_dma;;
+ *((__le64 *) rx_ring->sbq_base_indirect) = cpu_to_le64(tmp);
cqicb->sbq_addr =
cpu_to_le64(rx_ring->sbq_base_indirect_dma);
cqicb->sbq_buf_size =
- cpu_to_le16(((rx_ring->sbq_buf_size / 2) + 8) & 0xfffffff8);
+ cpu_to_le16((u16)(rx_ring->sbq_buf_size/2));
bq_len = (rx_ring->sbq_len == 65536) ? 0 :
(u16) rx_ring->sbq_len;
cqicb->sbq_len = cpu_to_le16(bq_len);
- rx_ring->sbq_prod_idx = rx_ring->sbq_len - 16;
+ rx_ring->sbq_prod_idx = 0;
rx_ring->sbq_curr_idx = 0;
- rx_ring->sbq_clean_idx = rx_ring->sbq_prod_idx;
- rx_ring->sbq_free_cnt = 16;
+ rx_ring->sbq_clean_idx = 0;
+ rx_ring->sbq_free_cnt = rx_ring->sbq_len;
}
switch (rx_ring->type) {
case TX_Q:
@@ -2592,17 +2544,6 @@ static int ql_start_rx_ring(struct ql_adapter *qdev, struct rx_ring *rx_ring)
QPRINTK(qdev, IFUP, ERR, "Failed to load CQICB.\n");
return err;
}
- QPRINTK(qdev, IFUP, INFO, "Successfully loaded CQICB.\n");
- /*
- * Advance the producer index for the buffer queues.
- */
- wmb();
- if (rx_ring->lbq_len)
- ql_write_db_reg(rx_ring->lbq_prod_idx,
- rx_ring->lbq_prod_idx_db_reg);
- if (rx_ring->sbq_len)
- ql_write_db_reg(rx_ring->sbq_prod_idx,
- rx_ring->sbq_prod_idx_db_reg);
return err;
}
@@ -3183,7 +3124,7 @@ static int ql_adapter_down(struct ql_adapter *qdev)
ql_disable_interrupts(qdev);
ql_tx_ring_clean(qdev);
-
+ ql_free_rx_buffers(qdev);
status = ql_adapter_reset(qdev);
if (status)
QPRINTK(qdev, IFDOWN, ERR, "reset(func #%d) FAILED!\n",
@@ -3201,6 +3142,7 @@ static int ql_adapter_up(struct ql_adapter *qdev)
goto err_init;
}
set_bit(QL_ADAPTER_UP, &qdev->flags);
+ ql_alloc_rx_buffers(qdev);
ql_enable_all_completion_interrupts(qdev);
if ((ql_read32(qdev, STS) & qdev->port_init))
ql_link_on(qdev);
--
1.6.0.2
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