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myri10ge: remove wcfifo

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Remove the wcfifo since it never gave any performance improvement.

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Brice Goglin 2008-07-21 10:25:50 +02:00 committed by Jeff Garzik
parent b57f9cae87
commit e454e7e2e3
1 changed files with 3 additions and 51 deletions
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54
drivers/net/myri10ge/myri10ge.c
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@ -125,7 +125,6 @@ struct myri10ge_cmd {
struct myri10ge_rx_buf {
struct mcp_kreq_ether_recv __iomem *lanai; /* lanai ptr for recv ring */
u8 __iomem *wc_fifo; /* w/c rx dma addr fifo address */
struct mcp_kreq_ether_recv *shadow; /* host shadow of recv ring */
struct myri10ge_rx_buffer_state *info;
struct page *page;
@ -140,7 +139,6 @@ struct myri10ge_rx_buf {
struct myri10ge_tx_buf {
struct mcp_kreq_ether_send __iomem *lanai; /* lanai ptr for sendq */
u8 __iomem *wc_fifo; /* w/c send fifo address */
struct mcp_kreq_ether_send *req_list; /* host shadow of sendq */
char *req_bytes;
struct myri10ge_tx_buffer_state *info;
@ -332,10 +330,6 @@ MODULE_PARM_DESC(myri10ge_fill_thresh, "Number of empty rx slots allowed");
static int myri10ge_reset_recover = 1;
static int myri10ge_wcfifo = 0;
module_param(myri10ge_wcfifo, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled");
static int myri10ge_max_slices = 1;
module_param(myri10ge_max_slices, int, S_IRUGO);
MODULE_PARM_DESC(myri10ge_max_slices, "Max tx/rx queues");
@ -1218,14 +1212,8 @@ myri10ge_alloc_rx_pages(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
/* copy 8 descriptors to the firmware at a time */
if ((idx & 7) == 7) {
if (rx->wc_fifo == NULL)
myri10ge_submit_8rx(&rx->lanai[idx - 7],
&rx->shadow[idx - 7]);
else {
mb();
myri10ge_pio_copy(rx->wc_fifo,
&rx->shadow[idx - 7], 64);
}
myri10ge_submit_8rx(&rx->lanai[idx - 7],
&rx->shadow[idx - 7]);
}
}
}
@ -2229,18 +2217,6 @@ static int myri10ge_get_txrx(struct myri10ge_priv *mgp, int slice)
ss->rx_big.lanai = (struct mcp_kreq_ether_recv __iomem *)
(mgp->sram + cmd.data0);
if (myri10ge_wcfifo && mgp->wc_enabled) {
ss->tx.wc_fifo = (u8 __iomem *)
mgp->sram + MXGEFW_ETH_SEND_4 + 64 * slice;
ss->rx_small.wc_fifo = (u8 __iomem *)
mgp->sram + MXGEFW_ETH_RECV_SMALL + 64 * slice;
ss->rx_big.wc_fifo = (u8 __iomem *)
mgp->sram + MXGEFW_ETH_RECV_BIG + 64 * slice;
} else {
ss->tx.wc_fifo = NULL;
ss->rx_small.wc_fifo = NULL;
ss->rx_big.wc_fifo = NULL;
}
return status;
}
@ -2573,27 +2549,6 @@ myri10ge_submit_req(struct myri10ge_tx_buf *tx, struct mcp_kreq_ether_send *src,
mb();
}
static inline void
myri10ge_submit_req_wc(struct myri10ge_tx_buf *tx,
struct mcp_kreq_ether_send *src, int cnt)
{
tx->req += cnt;
mb();
while (cnt >= 4) {
myri10ge_pio_copy(tx->wc_fifo, src, 64);
mb();
src += 4;
cnt -= 4;
}
if (cnt > 0) {
/* pad it to 64 bytes. The src is 64 bytes bigger than it
* needs to be so that we don't overrun it */
myri10ge_pio_copy(tx->wc_fifo + MXGEFW_ETH_SEND_OFFSET(cnt),
src, 64);
mb();
}
}
/*
* Transmit a packet. We need to split the packet so that a single
* segment does not cross myri10ge->tx_boundary, so this makes segment
@ -2830,10 +2785,7 @@ static int myri10ge_xmit(struct sk_buff *skb, struct net_device *dev)
MXGEFW_FLAGS_FIRST)));
idx = ((count - 1) + tx->req) & tx->mask;
tx->info[idx].last = 1;
if (tx->wc_fifo == NULL)
myri10ge_submit_req(tx, tx->req_list, count);
else
myri10ge_submit_req_wc(tx, tx->req_list, count);
myri10ge_submit_req(tx, tx->req_list, count);
tx->pkt_start++;
if ((avail - count) < MXGEFW_MAX_SEND_DESC) {
tx->stop_queue++;