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sfc: Move RX data FIFO thresholds out of struct efx_nic_type

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Since there are now separate blocks of code to set the thresholds for
each NIC type, it is no longer useful to include them in the NIC type
description.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-10-23 08:30:17 +00:00 committed by David S. Miller
parent 56241ceb9e
commit 625b451455
2 changed files with 12 additions and 15 deletions
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23
drivers/net/sfc/falcon.c
View File

@ -2922,16 +2922,17 @@ static void falcon_init_rx_cfg(struct efx_nic *efx)
const unsigned ctrl_xon_thr = 20;
const unsigned ctrl_xoff_thr = 25;
/* RX data FIFO thresholds (256-byte units; size varies) */
unsigned data_xon_thr =
((rx_xon_thresh_bytes >= 0) ?
rx_xon_thresh_bytes : efx->type->rx_xon_thresh) >> 8;
unsigned data_xoff_thr =
((rx_xoff_thresh_bytes >= 0) ?
rx_xoff_thresh_bytes : efx->type->rx_xoff_thresh) >> 8;
int data_xon_thr = rx_xon_thresh_bytes >> 8;
int data_xoff_thr = rx_xoff_thresh_bytes >> 8;
efx_oword_t reg;
falcon_read(efx, &reg, RX_CFG_REG_KER);
if (falcon_rev(efx) <= FALCON_REV_A1) {
/* Data FIFO size is 5.5K */
if (data_xon_thr < 0)
data_xon_thr = 512 >> 8;
if (data_xoff_thr < 0)
data_xoff_thr = 2048 >> 8;
EFX_SET_OWORD_FIELD(reg, RX_DESC_PUSH_EN_A1, 0);
EFX_SET_OWORD_FIELD(reg, RX_USR_BUF_SIZE_A1, huge_buf_size);
EFX_SET_OWORD_FIELD(reg, RX_XON_MAC_TH_A1, data_xon_thr);
@ -2939,7 +2940,11 @@ static void falcon_init_rx_cfg(struct efx_nic *efx)
EFX_SET_OWORD_FIELD(reg, RX_XON_TX_TH_A1, ctrl_xon_thr);
EFX_SET_OWORD_FIELD(reg, RX_XOFF_TX_TH_A1, ctrl_xoff_thr);
} else {
/* Register fields moved */
/* Data FIFO size is 80K; register fields moved */
if (data_xon_thr < 0)
data_xon_thr = 27648 >> 8; /* ~3*max MTU */
if (data_xoff_thr < 0)
data_xoff_thr = 54272 >> 8; /* ~80Kb - 3*max MTU */
EFX_SET_OWORD_FIELD(reg, RX_DESC_PUSH_EN_B0, 0);
EFX_SET_OWORD_FIELD(reg, RX_USR_BUF_SIZE_B0, huge_buf_size);
EFX_SET_OWORD_FIELD(reg, RX_XON_MAC_TH_B0, data_xon_thr);
@ -3130,8 +3135,6 @@ struct efx_nic_type falcon_a_nic_type = {
.max_dma_mask = FALCON_DMA_MASK,
.tx_dma_mask = FALCON_TX_DMA_MASK,
.bug5391_mask = 0xf,
.rx_xoff_thresh = 2048,
.rx_xon_thresh = 512,
.rx_buffer_padding = 0x24,
.max_interrupt_mode = EFX_INT_MODE_MSI,
.phys_addr_channels = 4,
@ -3154,8 +3157,6 @@ struct efx_nic_type falcon_b_nic_type = {
.max_dma_mask = FALCON_DMA_MASK,
.tx_dma_mask = FALCON_TX_DMA_MASK,
.bug5391_mask = 0,
.rx_xoff_thresh = 54272, /* ~80Kb - 3*max MTU */
.rx_xon_thresh = 27648, /* ~3*max MTU */
.rx_buffer_padding = 0,
.max_interrupt_mode = EFX_INT_MODE_MSIX,
.phys_addr_channels = 32, /* Hardware limit is 64, but the legacy

4
drivers/net/sfc/net_driver.h
View File

@ -875,8 +875,6 @@ static inline const char *efx_dev_name(struct efx_nic *efx)
* @max_dma_mask: Maximum possible DMA mask
* @tx_dma_mask: TX DMA mask
* @bug5391_mask: Address mask for bug 5391 workaround
* @rx_xoff_thresh: RX FIFO XOFF watermark (bytes)
* @rx_xon_thresh: RX FIFO XON watermark (bytes)
* @rx_buffer_padding: Padding added to each RX buffer
* @max_interrupt_mode: Highest capability interrupt mode supported
* from &enum efx_init_mode.
@ -899,8 +897,6 @@ struct efx_nic_type {
unsigned int tx_dma_mask;
unsigned bug5391_mask;
int rx_xoff_thresh;
int rx_xon_thresh;
unsigned int rx_buffer_padding;
unsigned int max_interrupt_mode;
unsigned int phys_addr_channels;