diff options
author | raghavendra.koushik@neterion.com <raghavendra.koushik@neterion.com> | 2005-08-03 19:38:01 (GMT) |
---|---|---|
committer | Jeff Garzik <jgarzik@pobox.com> | 2005-08-11 04:10:45 (GMT) |
commit | b6e3f9828b9dc188cfe80364365cc68bf45df949 (patch) | |
tree | 37b0669386484455f6a2fea10acc63d44bcf1d04 /drivers/net/s2io.c | |
parent | 541ae68f6ddf1c27aa6879935ce541f110484202 (diff) | |
download | linux-fsl-qoriq-b6e3f9828b9dc188cfe80364365cc68bf45df949.tar.xz |
[PATCH] S2io: Support for bimodal interrupts
Hi,
This is a patch to provide bimodal interrupt moderation support for
Xframe II adapter. Basically, in this moderation scheme, the adapter
raises a traffic interrupt if the no. of packets transmitted and/or
received reaches a programmable threshold.
Signed-off-by: Ravinandan Arakali <ravinandan.arakali@neterion.com>
Signed-off-by: Raghavendra Koushik <raghavendra.koushik@neterion.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/s2io.c')
-rw-r--r-- | drivers/net/s2io.c | 122 |
1 files changed, 84 insertions, 38 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index 15e2ee9..f430ffe 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -297,6 +297,7 @@ static unsigned int mc_pause_threshold_q4q7 = 187; static unsigned int shared_splits; static unsigned int tmac_util_period = 5; static unsigned int rmac_util_period = 5; +static unsigned int bimodal = 0; #ifndef CONFIG_S2IO_NAPI static unsigned int indicate_max_pkts; #endif @@ -1306,52 +1307,86 @@ static int init_nic(struct s2io_nic *nic) time++; } + if (nic->config.bimodal) { + int k = 0; + for (k = 0; k < config->rx_ring_num; k++) { + val64 = TTI_CMD_MEM_WE | TTI_CMD_MEM_STROBE_NEW_CMD; + val64 |= TTI_CMD_MEM_OFFSET(0x38+k); + writeq(val64, &bar0->tti_command_mem); - /* RTI Initialization */ - if (nic->device_type == XFRAME_II_DEVICE) { /* - * Programmed to generate Apprx 500 Intrs per - * second - */ - int count = (nic->config.bus_speed * 125)/4; - val64 = RTI_DATA1_MEM_RX_TIMER_VAL(count); + * Once the operation completes, the Strobe bit of the command + * register will be reset. We poll for this particular condition + * We wait for a maximum of 500ms for the operation to complete, + * if it's not complete by then we return error. + */ + time = 0; + while (TRUE) { + val64 = readq(&bar0->tti_command_mem); + if (!(val64 & TTI_CMD_MEM_STROBE_NEW_CMD)) { + break; + } + if (time > 10) { + DBG_PRINT(ERR_DBG, + "%s: TTI init Failed\n", + dev->name); + return -1; + } + time++; + msleep(50); + } + } } else { - val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF); - } - val64 |= RTI_DATA1_MEM_RX_URNG_A(0xA) | - RTI_DATA1_MEM_RX_URNG_B(0x10) | - RTI_DATA1_MEM_RX_URNG_C(0x30) | RTI_DATA1_MEM_RX_TIMER_AC_EN; - writeq(val64, &bar0->rti_data1_mem); + /* RTI Initialization */ + if (nic->device_type == XFRAME_II_DEVICE) { + /* + * Programmed to generate Apprx 500 Intrs per + * second + */ + int count = (nic->config.bus_speed * 125)/4; + val64 = RTI_DATA1_MEM_RX_TIMER_VAL(count); + } else { + val64 = RTI_DATA1_MEM_RX_TIMER_VAL(0xFFF); + } + val64 |= RTI_DATA1_MEM_RX_URNG_A(0xA) | + RTI_DATA1_MEM_RX_URNG_B(0x10) | + RTI_DATA1_MEM_RX_URNG_C(0x30) | RTI_DATA1_MEM_RX_TIMER_AC_EN; - val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) | - RTI_DATA2_MEM_RX_UFC_B(0x2) | - RTI_DATA2_MEM_RX_UFC_C(0x40) | RTI_DATA2_MEM_RX_UFC_D(0x80); - writeq(val64, &bar0->rti_data2_mem); + writeq(val64, &bar0->rti_data1_mem); - val64 = RTI_CMD_MEM_WE | RTI_CMD_MEM_STROBE_NEW_CMD; - writeq(val64, &bar0->rti_command_mem); + val64 = RTI_DATA2_MEM_RX_UFC_A(0x1) | + RTI_DATA2_MEM_RX_UFC_B(0x2) | + RTI_DATA2_MEM_RX_UFC_C(0x40) | RTI_DATA2_MEM_RX_UFC_D(0x80); + writeq(val64, &bar0->rti_data2_mem); - /* - * Once the operation completes, the Strobe bit of the - * command register will be reset. We poll for this - * particular condition. We wait for a maximum of 500ms - * for the operation to complete, if it's not complete - * by then we return error. - */ - time = 0; - while (TRUE) { - val64 = readq(&bar0->rti_command_mem); - if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD)) { - break; - } - if (time > 10) { - DBG_PRINT(ERR_DBG, "%s: RTI init Failed\n", - dev->name); - return -1; + for (i = 0; i < config->rx_ring_num; i++) { + val64 = RTI_CMD_MEM_WE | RTI_CMD_MEM_STROBE_NEW_CMD + | RTI_CMD_MEM_OFFSET(i); + writeq(val64, &bar0->rti_command_mem); + + /* + * Once the operation completes, the Strobe bit of the + * command register will be reset. We poll for this + * particular condition. We wait for a maximum of 500ms + * for the operation to complete, if it's not complete + * by then we return error. + */ + time = 0; + while (TRUE) { + val64 = readq(&bar0->rti_command_mem); + if (!(val64 & RTI_CMD_MEM_STROBE_NEW_CMD)) { + break; + } + if (time > 10) { + DBG_PRINT(ERR_DBG, "%s: RTI init Failed\n", + dev->name); + return -1; + } + time++; + msleep(50); + } } - time++; - msleep(50); } /* @@ -1789,6 +1824,8 @@ static int start_nic(struct s2io_nic *nic) &bar0->prc_rxd0_n[i]); val64 = readq(&bar0->prc_ctrl_n[i]); + if (nic->config.bimodal) + val64 |= PRC_CTRL_BIMODAL_INTERRUPT; #ifndef CONFIG_2BUFF_MODE val64 |= PRC_CTRL_RC_ENABLED; #else @@ -5030,6 +5067,7 @@ module_param(mc_pause_threshold_q4q7, int, 0); module_param(shared_splits, int, 0); module_param(tmac_util_period, int, 0); module_param(rmac_util_period, int, 0); +module_param(bimodal, bool, 0); #ifndef CONFIG_S2IO_NAPI module_param(indicate_max_pkts, int, 0); #endif @@ -5397,6 +5435,14 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre) else strcat(sp->name, ": Neterion Xframe I 10GbE adapter"); + /* Initialize bimodal Interrupts */ + sp->config.bimodal = bimodal; + if (!(sp->device_type & XFRAME_II_DEVICE) && bimodal) { + sp->config.bimodal = 0; + DBG_PRINT(ERR_DBG,"%s:Bimodal intr not supported by Xframe I\n", + dev->name); + } + /* * Make Link state as off at this point, when the Link change * interrupt comes the state will be automatically changed to |