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gfiber / kernel / skids / master / . / drivers / infiniband / hw / nes / nes_hw.c
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/*
* Copyright (c) 2006 - 2009 Intel Corporation. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/if_vlan.h>
#include <linux/inet_lro.h>
#include <linux/slab.h>
#include "nes.h"
static unsigned int nes_lro_max_aggr = NES_LRO_MAX_AGGR;
module_param(nes_lro_max_aggr, uint, 0444);
MODULE_PARM_DESC(nes_lro_max_aggr, "NIC LRO max packet aggregation");
static int wide_ppm_offset;
module_param(wide_ppm_offset, int, 0644);
MODULE_PARM_DESC(wide_ppm_offset, "Increase CX4 interface clock ppm offset, 0=100ppm (default), 1=300ppm");
static u32 crit_err_count;
u32 int_mod_timer_init;
u32 int_mod_cq_depth_256;
u32 int_mod_cq_depth_128;
u32 int_mod_cq_depth_32;
u32 int_mod_cq_depth_24;
u32 int_mod_cq_depth_16;
u32 int_mod_cq_depth_4;
u32 int_mod_cq_depth_1;
static const u8 nes_max_critical_error_count = 100;
#include "nes_cm.h"
static void nes_cqp_ce_handler(struct nes_device *nesdev, struct nes_hw_cq *cq);
static void nes_init_csr_ne020(struct nes_device *nesdev, u8 hw_rev, u8 port_count);
static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
struct nes_adapter *nesadapter, u8 OneG_Mode);
static void nes_nic_napi_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq);
static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq);
static void nes_process_ceq(struct nes_device *nesdev, struct nes_hw_ceq *ceq);
static void nes_process_iwarp_aeqe(struct nes_device *nesdev,
struct nes_hw_aeqe *aeqe);
static void process_critical_error(struct nes_device *nesdev);
static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number);
static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_Mode);
static void nes_terminate_timeout(unsigned long context);
static void nes_terminate_start_timer(struct nes_qp *nesqp);
#ifdef CONFIG_INFINIBAND_NES_DEBUG
static unsigned char *nes_iwarp_state_str[] = {
"Non-Existant",
"Idle",
"RTS",
"Closing",
"RSVD1",
"Terminate",
"Error",
"RSVD2",
};
static unsigned char *nes_tcp_state_str[] = {
"Non-Existant",
"Closed",
"Listen",
"SYN Sent",
"SYN Rcvd",
"Established",
"Close Wait",
"FIN Wait 1",
"Closing",
"Last Ack",
"FIN Wait 2",
"Time Wait",
"RSVD1",
"RSVD2",
"RSVD3",
"RSVD4",
};
#endif
/**
* nes_nic_init_timer_defaults
*/
void nes_nic_init_timer_defaults(struct nes_device *nesdev, u8 jumbomode)
{
unsigned long flags;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
shared_timer->timer_in_use_min = NES_NIC_FAST_TIMER_LOW;
shared_timer->timer_in_use_max = NES_NIC_FAST_TIMER_HIGH;
if (jumbomode) {
shared_timer->threshold_low = DEFAULT_JUMBO_NES_QL_LOW;
shared_timer->threshold_target = DEFAULT_JUMBO_NES_QL_TARGET;
shared_timer->threshold_high = DEFAULT_JUMBO_NES_QL_HIGH;
} else {
shared_timer->threshold_low = DEFAULT_NES_QL_LOW;
shared_timer->threshold_target = DEFAULT_NES_QL_TARGET;
shared_timer->threshold_high = DEFAULT_NES_QL_HIGH;
}
/* todo use netdev->mtu to set thresholds */
spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
}
/**
* nes_nic_init_timer
*/
static void nes_nic_init_timer(struct nes_device *nesdev)
{
unsigned long flags;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
if (shared_timer->timer_in_use_old == 0) {
nesdev->deepcq_count = 0;
shared_timer->timer_direction_upward = 0;
shared_timer->timer_direction_downward = 0;
shared_timer->timer_in_use = NES_NIC_FAST_TIMER;
shared_timer->timer_in_use_old = 0;
}
if (shared_timer->timer_in_use != shared_timer->timer_in_use_old) {
shared_timer->timer_in_use_old = shared_timer->timer_in_use;
nes_write32(nesdev->regs+NES_PERIODIC_CONTROL,
0x80000000 | ((u32)(shared_timer->timer_in_use*8)));
}
/* todo use netdev->mtu to set thresholds */
spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
}
/**
* nes_nic_tune_timer
*/
static void nes_nic_tune_timer(struct nes_device *nesdev)
{
unsigned long flags;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
u16 cq_count = nesdev->currcq_count;
spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
if (shared_timer->cq_count_old <= cq_count)
shared_timer->cq_direction_downward = 0;
else
shared_timer->cq_direction_downward++;
shared_timer->cq_count_old = cq_count;
if (shared_timer->cq_direction_downward > NES_NIC_CQ_DOWNWARD_TREND) {
if (cq_count <= shared_timer->threshold_low &&
shared_timer->threshold_low > 4) {
shared_timer->threshold_low = shared_timer->threshold_low/2;
shared_timer->cq_direction_downward=0;
nesdev->currcq_count = 0;
spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
return;
}
}
if (cq_count > 1) {
nesdev->deepcq_count += cq_count;
if (cq_count <= shared_timer->threshold_low) { /* increase timer gently */
shared_timer->timer_direction_upward++;
shared_timer->timer_direction_downward = 0;
} else if (cq_count <= shared_timer->threshold_target) { /* balanced */
shared_timer->timer_direction_upward = 0;
shared_timer->timer_direction_downward = 0;
} else if (cq_count <= shared_timer->threshold_high) { /* decrease timer gently */
shared_timer->timer_direction_downward++;
shared_timer->timer_direction_upward = 0;
} else if (cq_count <= (shared_timer->threshold_high) * 2) {
shared_timer->timer_in_use -= 2;
shared_timer->timer_direction_upward = 0;
shared_timer->timer_direction_downward++;
} else {
shared_timer->timer_in_use -= 4;
shared_timer->timer_direction_upward = 0;
shared_timer->timer_direction_downward++;
}
if (shared_timer->timer_direction_upward > 3 ) { /* using history */
shared_timer->timer_in_use += 3;
shared_timer->timer_direction_upward = 0;
shared_timer->timer_direction_downward = 0;
}
if (shared_timer->timer_direction_downward > 5) { /* using history */
shared_timer->timer_in_use -= 4 ;
shared_timer->timer_direction_downward = 0;
shared_timer->timer_direction_upward = 0;
}
}
/* boundary checking */
if (shared_timer->timer_in_use > shared_timer->threshold_high)
shared_timer->timer_in_use = shared_timer->threshold_high;
else if (shared_timer->timer_in_use < shared_timer->threshold_low)
shared_timer->timer_in_use = shared_timer->threshold_low;
nesdev->currcq_count = 0;
spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
}
/**
* nes_init_adapter - initialize adapter
*/
struct nes_adapter *nes_init_adapter(struct nes_device *nesdev, u8 hw_rev) {
struct nes_adapter *nesadapter = NULL;
unsigned long num_pds;
u32 u32temp;
u32 port_count;
u16 max_rq_wrs;
u16 max_sq_wrs;
u32 max_mr;
u32 max_256pbl;
u32 max_4kpbl;
u32 max_qp;
u32 max_irrq;
u32 max_cq;
u32 hte_index_mask;
u32 adapter_size;
u32 arp_table_size;
u16 vendor_id;
u16 device_id;
u8 OneG_Mode;
u8 func_index;
/* search the list of existing adapters */
list_for_each_entry(nesadapter, &nes_adapter_list, list) {
nes_debug(NES_DBG_INIT, "Searching Adapter list for PCI devfn = 0x%X,"
" adapter PCI slot/bus = %u/%u, pci devices PCI slot/bus = %u/%u, .\n",
nesdev->pcidev->devfn,
PCI_SLOT(nesadapter->devfn),
nesadapter->bus_number,
PCI_SLOT(nesdev->pcidev->devfn),
nesdev->pcidev->bus->number );
if ((PCI_SLOT(nesadapter->devfn) == PCI_SLOT(nesdev->pcidev->devfn)) &&
(nesadapter->bus_number == nesdev->pcidev->bus->number)) {
nesadapter->ref_count++;
return nesadapter;
}
}
/* no adapter found */
num_pds = pci_resource_len(nesdev->pcidev, BAR_1) >> PAGE_SHIFT;
if ((hw_rev != NE020_REV) && (hw_rev != NE020_REV1)) {
nes_debug(NES_DBG_INIT, "NE020 driver detected unknown hardware revision 0x%x\n",
hw_rev);
return NULL;
}
nes_debug(NES_DBG_INIT, "Determine Soft Reset, QP_control=0x%x, CPU0=0x%x, CPU1=0x%x, CPU2=0x%x\n",
nes_read_indexed(nesdev, NES_IDX_QP_CONTROL + PCI_FUNC(nesdev->pcidev->devfn) * 8),
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS),
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS + 4),
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS + 8));
nes_debug(NES_DBG_INIT, "Reset and init NE020\n");
if ((port_count = nes_reset_adapter_ne020(nesdev, &OneG_Mode)) == 0)
return NULL;
max_qp = nes_read_indexed(nesdev, NES_IDX_QP_CTX_SIZE);
nes_debug(NES_DBG_INIT, "QP_CTX_SIZE=%u\n", max_qp);
u32temp = nes_read_indexed(nesdev, NES_IDX_QUAD_HASH_TABLE_SIZE);
if (max_qp > ((u32)1 << (u32temp & 0x001f))) {
nes_debug(NES_DBG_INIT, "Reducing Max QPs to %u due to hash table size = 0x%08X\n",
max_qp, u32temp);
max_qp = (u32)1 << (u32temp & 0x001f);
}
hte_index_mask = ((u32)1 << ((u32temp & 0x001f)+1))-1;
nes_debug(NES_DBG_INIT, "Max QP = %u, hte_index_mask = 0x%08X.\n",
max_qp, hte_index_mask);
u32temp = nes_read_indexed(nesdev, NES_IDX_IRRQ_COUNT);
max_irrq = 1 << (u32temp & 0x001f);
if (max_qp > max_irrq) {
max_qp = max_irrq;
nes_debug(NES_DBG_INIT, "Reducing Max QPs to %u due to Available Q1s.\n",
max_qp);
}
/* there should be no reason to allocate more pds than qps */
if (num_pds > max_qp)
num_pds = max_qp;
u32temp = nes_read_indexed(nesdev, NES_IDX_MRT_SIZE);
max_mr = (u32)8192 << (u32temp & 0x7);
u32temp = nes_read_indexed(nesdev, NES_IDX_PBL_REGION_SIZE);
max_256pbl = (u32)1 << (u32temp & 0x0000001f);
max_4kpbl = (u32)1 << ((u32temp >> 16) & 0x0000001f);
max_cq = nes_read_indexed(nesdev, NES_IDX_CQ_CTX_SIZE);
u32temp = nes_read_indexed(nesdev, NES_IDX_ARP_CACHE_SIZE);
arp_table_size = 1 << u32temp;
adapter_size = (sizeof(struct nes_adapter) +
(sizeof(unsigned long)-1)) & (~(sizeof(unsigned long)-1));
adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_qp);
adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_mr);
adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(max_cq);
adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(num_pds);
adapter_size += sizeof(unsigned long) * BITS_TO_LONGS(arp_table_size);
adapter_size += sizeof(struct nes_qp **) * max_qp;
/* allocate a new adapter struct */
nesadapter = kzalloc(adapter_size, GFP_KERNEL);
if (nesadapter == NULL) {
return NULL;
}
nes_debug(NES_DBG_INIT, "Allocating new nesadapter @ %p, size = %u (actual size = %u).\n",
nesadapter, (u32)sizeof(struct nes_adapter), adapter_size);
if (nes_read_eeprom_values(nesdev, nesadapter)) {
printk(KERN_ERR PFX "Unable to read EEPROM data.\n");
kfree(nesadapter);
return NULL;
}
nesadapter->vendor_id = (((u32) nesadapter->mac_addr_high) << 8) |
(nesadapter->mac_addr_low >> 24);
pci_bus_read_config_word(nesdev->pcidev->bus, nesdev->pcidev->devfn,
PCI_DEVICE_ID, &device_id);
nesadapter->vendor_part_id = device_id;
if (nes_init_serdes(nesdev, hw_rev, port_count, nesadapter,
OneG_Mode)) {
kfree(nesadapter);
return NULL;
}
nes_init_csr_ne020(nesdev, hw_rev, port_count);
memset(nesadapter->pft_mcast_map, 255,
sizeof nesadapter->pft_mcast_map);
/* populate the new nesadapter */
nesadapter->devfn = nesdev->pcidev->devfn;
nesadapter->bus_number = nesdev->pcidev->bus->number;
nesadapter->ref_count = 1;
nesadapter->timer_int_req = 0xffff0000;
nesadapter->OneG_Mode = OneG_Mode;
nesadapter->doorbell_start = nesdev->doorbell_region;
/* nesadapter->tick_delta = clk_divisor; */
nesadapter->hw_rev = hw_rev;
nesadapter->port_count = port_count;
nesadapter->max_qp = max_qp;
nesadapter->hte_index_mask = hte_index_mask;
nesadapter->max_irrq = max_irrq;
nesadapter->max_mr = max_mr;
nesadapter->max_256pbl = max_256pbl - 1;
nesadapter->max_4kpbl = max_4kpbl - 1;
nesadapter->max_cq = max_cq;
nesadapter->free_256pbl = max_256pbl - 1;
nesadapter->free_4kpbl = max_4kpbl - 1;
nesadapter->max_pd = num_pds;
nesadapter->arp_table_size = arp_table_size;
nesadapter->et_pkt_rate_low = NES_TIMER_ENABLE_LIMIT;
if (nes_drv_opt & NES_DRV_OPT_DISABLE_INT_MOD) {
nesadapter->et_use_adaptive_rx_coalesce = 0;
nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT;
nesadapter->et_rx_coalesce_usecs_irq = interrupt_mod_interval;
} else {
nesadapter->et_use_adaptive_rx_coalesce = 1;
nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT_DYNAMIC;
nesadapter->et_rx_coalesce_usecs_irq = 0;
printk(PFX "%s: Using Adaptive Interrupt Moderation\n", __func__);
}
/* Setup and enable the periodic timer */
if (nesadapter->et_rx_coalesce_usecs_irq)
nes_write32(nesdev->regs+NES_PERIODIC_CONTROL, 0x80000000 |
((u32)(nesadapter->et_rx_coalesce_usecs_irq * 8)));
else
nes_write32(nesdev->regs+NES_PERIODIC_CONTROL, 0x00000000);
nesadapter->base_pd = 1;
nesadapter->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY |
IB_DEVICE_MEM_WINDOW |
IB_DEVICE_MEM_MGT_EXTENSIONS;
nesadapter->allocated_qps = (unsigned long *)&(((unsigned char *)nesadapter)
[(sizeof(struct nes_adapter)+(sizeof(unsigned long)-1))&(~(sizeof(unsigned long)-1))]);
nesadapter->allocated_cqs = &nesadapter->allocated_qps[BITS_TO_LONGS(max_qp)];
nesadapter->allocated_mrs = &nesadapter->allocated_cqs[BITS_TO_LONGS(max_cq)];
nesadapter->allocated_pds = &nesadapter->allocated_mrs[BITS_TO_LONGS(max_mr)];
nesadapter->allocated_arps = &nesadapter->allocated_pds[BITS_TO_LONGS(num_pds)];
nesadapter->qp_table = (struct nes_qp **)(&nesadapter->allocated_arps[BITS_TO_LONGS(arp_table_size)]);
/* mark the usual suspect QPs, MR and CQs as in use */
for (u32temp = 0; u32temp < NES_FIRST_QPN; u32temp++) {
set_bit(u32temp, nesadapter->allocated_qps);
set_bit(u32temp, nesadapter->allocated_cqs);
}
set_bit(0, nesadapter->allocated_mrs);
for (u32temp = 0; u32temp < 20; u32temp++)
set_bit(u32temp, nesadapter->allocated_pds);
u32temp = nes_read_indexed(nesdev, NES_IDX_QP_MAX_CFG_SIZES);
max_rq_wrs = ((u32temp >> 8) & 3);
switch (max_rq_wrs) {
case 0:
max_rq_wrs = 4;
break;
case 1:
max_rq_wrs = 16;
break;
case 2:
max_rq_wrs = 32;
break;
case 3:
max_rq_wrs = 512;
break;
}
max_sq_wrs = (u32temp & 3);
switch (max_sq_wrs) {
case 0:
max_sq_wrs = 4;
break;
case 1:
max_sq_wrs = 16;
break;
case 2:
max_sq_wrs = 32;
break;
case 3:
max_sq_wrs = 512;
break;
}
nesadapter->max_qp_wr = min(max_rq_wrs, max_sq_wrs);
nesadapter->max_irrq_wr = (u32temp >> 16) & 3;
nesadapter->max_sge = 4;
nesadapter->max_cqe = 32766;
if (nes_read_eeprom_values(nesdev, nesadapter)) {
printk(KERN_ERR PFX "Unable to read EEPROM data.\n");
kfree(nesadapter);
return NULL;
}
u32temp = nes_read_indexed(nesdev, NES_IDX_TCP_TIMER_CONFIG);
nes_write_indexed(nesdev, NES_IDX_TCP_TIMER_CONFIG,
(u32temp & 0xff000000) | (nesadapter->tcp_timer_core_clk_divisor & 0x00ffffff));
/* setup port configuration */
if (nesadapter->port_count == 1) {
nesadapter->log_port = 0x00000000;
if (nes_drv_opt & NES_DRV_OPT_DUAL_LOGICAL_PORT)
nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000002);
else
nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000003);
} else {
if (nesadapter->phy_type[0] == NES_PHY_TYPE_PUMA_1G) {
nesadapter->log_port = 0x000000D8;
} else {
if (nesadapter->port_count == 2)
nesadapter->log_port = 0x00000044;
else
nesadapter->log_port = 0x000000e4;
}
nes_write_indexed(nesdev, NES_IDX_TX_POOL_SIZE, 0x00000003);
}
nes_write_indexed(nesdev, NES_IDX_NIC_LOGPORT_TO_PHYPORT,
nesadapter->log_port);
nes_debug(NES_DBG_INIT, "Probe time, LOG2PHY=%u\n",
nes_read_indexed(nesdev, NES_IDX_NIC_LOGPORT_TO_PHYPORT));
spin_lock_init(&nesadapter->resource_lock);
spin_lock_init(&nesadapter->phy_lock);
spin_lock_init(&nesadapter->pbl_lock);
spin_lock_init(&nesadapter->periodic_timer_lock);
INIT_LIST_HEAD(&nesadapter->nesvnic_list[0]);
INIT_LIST_HEAD(&nesadapter->nesvnic_list[1]);
INIT_LIST_HEAD(&nesadapter->nesvnic_list[2]);
INIT_LIST_HEAD(&nesadapter->nesvnic_list[3]);
if ((!nesadapter->OneG_Mode) && (nesadapter->port_count == 2)) {
u32 pcs_control_status0, pcs_control_status1;
u32 reset_value;
u32 i = 0;
u32 int_cnt = 0;
u32 ext_cnt = 0;
unsigned long flags;
u32 j = 0;
pcs_control_status0 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0);
pcs_control_status1 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
for (i = 0; i < NES_MAX_LINK_CHECK; i++) {
pcs_control_status0 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0);
pcs_control_status1 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
if ((0x0F000100 == (pcs_control_status0 & 0x0F000100))
|| (0x0F000100 == (pcs_control_status1 & 0x0F000100)))
int_cnt++;
msleep(1);
}
if (int_cnt > 1) {
spin_lock_irqsave(&nesadapter->phy_lock, flags);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
mh_detected++;
reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
reset_value |= 0x0000003d;
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
& 0x00000040) != 0x00000040) && (j++ < 5000));
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
pcs_control_status0 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0);
pcs_control_status1 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
for (i = 0; i < NES_MAX_LINK_CHECK; i++) {
pcs_control_status0 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0);
pcs_control_status1 = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
if ((0x0F000100 == (pcs_control_status0 & 0x0F000100))
|| (0x0F000100 == (pcs_control_status1 & 0x0F000100))) {
if (++ext_cnt > int_cnt) {
spin_lock_irqsave(&nesadapter->phy_lock, flags);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1,
0x0000F088);
mh_detected++;
reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
reset_value |= 0x0000003d;
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
& 0x00000040) != 0x00000040) && (j++ < 5000));
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
break;
}
}
msleep(1);
}
}
}
if (nesadapter->hw_rev == NE020_REV) {
init_timer(&nesadapter->mh_timer);
nesadapter->mh_timer.function = nes_mh_fix;
nesadapter->mh_timer.expires = jiffies + (HZ/5); /* 1 second */
nesadapter->mh_timer.data = (unsigned long)nesdev;
add_timer(&nesadapter->mh_timer);
} else {
nes_write32(nesdev->regs+NES_INTF_INT_STAT, 0x0f000000);
}
init_timer(&nesadapter->lc_timer);
nesadapter->lc_timer.function = nes_clc;
nesadapter->lc_timer.expires = jiffies + 3600 * HZ; /* 1 hour */
nesadapter->lc_timer.data = (unsigned long)nesdev;
add_timer(&nesadapter->lc_timer);
list_add_tail(&nesadapter->list, &nes_adapter_list);
for (func_index = 0; func_index < 8; func_index++) {
pci_bus_read_config_word(nesdev->pcidev->bus,
PCI_DEVFN(PCI_SLOT(nesdev->pcidev->devfn),
func_index), 0, &vendor_id);
if (vendor_id == 0xffff)
break;
}
nes_debug(NES_DBG_INIT, "%s %d functions found for %s.\n", __func__,
func_index, pci_name(nesdev->pcidev));
nesadapter->adapter_fcn_count = func_index;
return nesadapter;
}
/**
* nes_reset_adapter_ne020
*/
static unsigned int nes_reset_adapter_ne020(struct nes_device *nesdev, u8 *OneG_Mode)
{
u32 port_count;
u32 u32temp;
u32 i;
u32temp = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
port_count = ((u32temp & 0x00000300) >> 8) + 1;
/* TODO: assuming that both SERDES are set the same for now */
*OneG_Mode = (u32temp & 0x00003c00) ? 0 : 1;
nes_debug(NES_DBG_INIT, "Initial Software Reset = 0x%08X, port_count=%u\n",
u32temp, port_count);
if (*OneG_Mode)
nes_debug(NES_DBG_INIT, "Running in 1G mode.\n");
u32temp &= 0xff00ffc0;
switch (port_count) {
case 1:
u32temp |= 0x00ee0000;
break;
case 2:
u32temp |= 0x00cc0000;
break;
case 4:
u32temp |= 0x00000000;
break;
default:
return 0;
break;
}
/* check and do full reset if needed */
if (nes_read_indexed(nesdev, NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8))) {
nes_debug(NES_DBG_INIT, "Issuing Full Soft reset = 0x%08X\n", u32temp | 0xd);
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, u32temp | 0xd);
i = 0;
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
mdelay(1);
if (i > 10000) {
nes_debug(NES_DBG_INIT, "Did not see full soft reset done.\n");
return 0;
}
i = 0;
while ((nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS) != 0x80) && i++ < 10000)
mdelay(1);
if (i > 10000) {
printk(KERN_ERR PFX "Internal CPU not ready, status = %02X\n",
nes_read_indexed(nesdev, NES_IDX_INT_CPU_STATUS));
return 0;
}
}
/* port reset */
switch (port_count) {
case 1:
u32temp |= 0x00ee0010;
break;
case 2:
u32temp |= 0x00cc0030;
break;
case 4:
u32temp |= 0x00000030;
break;
}
nes_debug(NES_DBG_INIT, "Issuing Port Soft reset = 0x%08X\n", u32temp | 0xd);
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, u32temp | 0xd);
i = 0;
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET) & 0x00000040) == 0) && i++ < 10000)
mdelay(1);
if (i > 10000) {
nes_debug(NES_DBG_INIT, "Did not see port soft reset done.\n");
return 0;
}
/* serdes 0 */
i = 0;
while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
& 0x0000000f)) != 0x0000000f) && i++ < 5000)
mdelay(1);
if (i > 5000) {
nes_debug(NES_DBG_INIT, "Serdes 0 not ready, status=%x\n", u32temp);
return 0;
}
/* serdes 1 */
if (port_count > 1) {
i = 0;
while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
& 0x0000000f)) != 0x0000000f) && i++ < 5000)
mdelay(1);
if (i > 5000) {
nes_debug(NES_DBG_INIT, "Serdes 1 not ready, status=%x\n", u32temp);
return 0;
}
}
return port_count;
}
/**
* nes_init_serdes
*/
static int nes_init_serdes(struct nes_device *nesdev, u8 hw_rev, u8 port_count,
struct nes_adapter *nesadapter, u8 OneG_Mode)
{
int i;
u32 u32temp;
u32 sds;
if (hw_rev != NE020_REV) {
/* init serdes 0 */
switch (nesadapter->phy_type[0]) {
case NES_PHY_TYPE_CX4:
if (wide_ppm_offset)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000FFFAA);
else
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
break;
case NES_PHY_TYPE_KR:
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x00000000);
break;
case NES_PHY_TYPE_PUMA_1G:
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0);
sds |= 0x00000100;
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, sds);
break;
default:
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000FF);
break;
}
if (!OneG_Mode)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_HIGHZ_LANE_MODE0, 0x11110000);
if (port_count < 2)
return 0;
/* init serdes 1 */
if (!(OneG_Mode && (nesadapter->phy_type[1] != NES_PHY_TYPE_PUMA_1G)))
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000000FF);
switch (nesadapter->phy_type[1]) {
case NES_PHY_TYPE_ARGUS:
case NES_PHY_TYPE_SFP_D:
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x00000000);
break;
case NES_PHY_TYPE_CX4:
if (wide_ppm_offset)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000FFFAA);
break;
case NES_PHY_TYPE_KR:
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x00000000);
break;
case NES_PHY_TYPE_PUMA_1G:
sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
sds |= 0x000000100;
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, sds);
}
if (!OneG_Mode) {
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_HIGHZ_LANE_MODE1, 0x11110000);
sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
sds &= 0xFFFFFFBF;
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, sds);
}
} else {
/* init serdes 0 */
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0, 0x00000008);
i = 0;
while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0)
& 0x0000000f)) != 0x0000000f) && i++ < 5000)
mdelay(1);
if (i > 5000) {
nes_debug(NES_DBG_PHY, "Init: serdes 0 not ready, status=%x\n", u32temp);
return 1;
}
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP0, 0x000bdef7);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE0, 0x9ce73000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE0, 0x0ff00000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET0, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS0, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL0, 0x00000000);
if (OneG_Mode)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0182222);
else
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL0, 0xf0042222);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL0, 0x000000ff);
if (port_count > 1) {
/* init serdes 1 */
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x00000048);
i = 0;
while (((u32temp = (nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS1)
& 0x0000000f)) != 0x0000000f) && (i++ < 5000))
mdelay(1);
if (i > 5000) {
printk("%s: Init: serdes 1 not ready, status=%x\n", __func__, u32temp);
/* return 1; */
}
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_EMP1, 0x000bdef7);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_TX_DRIVE1, 0x9ce73000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_MODE1, 0x0ff00000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_SIGDET1, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_BYPASS1, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_LOOPBACK_CONTROL1, 0x00000000);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_RX_EQ_CONTROL1, 0xf0002222);
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_CDR_CONTROL1, 0x000000ff);
}
}
return 0;
}
/**
* nes_init_csr_ne020
* Initialize registers for ne020 hardware
*/
static void nes_init_csr_ne020(struct nes_device *nesdev, u8 hw_rev, u8 port_count)
{
u32 u32temp;
nes_debug(NES_DBG_INIT, "port_count=%d\n", port_count);
nes_write_indexed(nesdev, 0x000001E4, 0x00000007);
/* nes_write_indexed(nesdev, 0x000001E8, 0x000208C4); */
nes_write_indexed(nesdev, 0x000001E8, 0x00020874);
nes_write_indexed(nesdev, 0x000001D8, 0x00048002);
/* nes_write_indexed(nesdev, 0x000001D8, 0x0004B002); */
nes_write_indexed(nesdev, 0x000001FC, 0x00050005);
nes_write_indexed(nesdev, 0x00000600, 0x55555555);
nes_write_indexed(nesdev, 0x00000604, 0x55555555);
/* TODO: move these MAC register settings to NIC bringup */
nes_write_indexed(nesdev, 0x00002000, 0x00000001);
nes_write_indexed(nesdev, 0x00002004, 0x00000001);
nes_write_indexed(nesdev, 0x00002008, 0x0000FFFF);
nes_write_indexed(nesdev, 0x0000200C, 0x00000001);
nes_write_indexed(nesdev, 0x00002010, 0x000003c1);
nes_write_indexed(nesdev, 0x0000201C, 0x75345678);
if (port_count > 1) {
nes_write_indexed(nesdev, 0x00002200, 0x00000001);
nes_write_indexed(nesdev, 0x00002204, 0x00000001);
nes_write_indexed(nesdev, 0x00002208, 0x0000FFFF);
nes_write_indexed(nesdev, 0x0000220C, 0x00000001);
nes_write_indexed(nesdev, 0x00002210, 0x000003c1);
nes_write_indexed(nesdev, 0x0000221C, 0x75345678);
nes_write_indexed(nesdev, 0x00000908, 0x20000001);
}
if (port_count > 2) {
nes_write_indexed(nesdev, 0x00002400, 0x00000001);
nes_write_indexed(nesdev, 0x00002404, 0x00000001);
nes_write_indexed(nesdev, 0x00002408, 0x0000FFFF);
nes_write_indexed(nesdev, 0x0000240C, 0x00000001);
nes_write_indexed(nesdev, 0x00002410, 0x000003c1);
nes_write_indexed(nesdev, 0x0000241C, 0x75345678);
nes_write_indexed(nesdev, 0x00000910, 0x20000001);
nes_write_indexed(nesdev, 0x00002600, 0x00000001);
nes_write_indexed(nesdev, 0x00002604, 0x00000001);
nes_write_indexed(nesdev, 0x00002608, 0x0000FFFF);
nes_write_indexed(nesdev, 0x0000260C, 0x00000001);
nes_write_indexed(nesdev, 0x00002610, 0x000003c1);
nes_write_indexed(nesdev, 0x0000261C, 0x75345678);
nes_write_indexed(nesdev, 0x00000918, 0x20000001);
}
nes_write_indexed(nesdev, 0x00005000, 0x00018000);
/* nes_write_indexed(nesdev, 0x00005000, 0x00010000); */
nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG1, (wqm_quanta << 1) |
0x00000001);
nes_write_indexed(nesdev, 0x00005008, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00005010, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00005018, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00005020, 0x1F1F1F1F);
nes_write_indexed(nesdev, 0x00006090, 0xFFFFFFFF);
/* TODO: move this to code, get from EEPROM */
nes_write_indexed(nesdev, 0x00000900, 0x20000001);
nes_write_indexed(nesdev, 0x000060C0, 0x0000028e);
nes_write_indexed(nesdev, 0x000060C8, 0x00000020);
nes_write_indexed(nesdev, 0x000001EC, 0x7b2625a0);
/* nes_write_indexed(nesdev, 0x000001EC, 0x5f2625a0); */
if (hw_rev != NE020_REV) {
u32temp = nes_read_indexed(nesdev, 0x000008e8);
u32temp |= 0x80000000;
nes_write_indexed(nesdev, 0x000008e8, u32temp);
u32temp = nes_read_indexed(nesdev, 0x000021f8);
u32temp &= 0x7fffffff;
u32temp |= 0x7fff0010;
nes_write_indexed(nesdev, 0x000021f8, u32temp);
if (port_count > 1) {
u32temp = nes_read_indexed(nesdev, 0x000023f8);
u32temp &= 0x7fffffff;
u32temp |= 0x7fff0010;
nes_write_indexed(nesdev, 0x000023f8, u32temp);
}
}
}
/**
* nes_destroy_adapter - destroy the adapter structure
*/
void nes_destroy_adapter(struct nes_adapter *nesadapter)
{
struct nes_adapter *tmp_adapter;
list_for_each_entry(tmp_adapter, &nes_adapter_list, list) {
nes_debug(NES_DBG_SHUTDOWN, "Nes Adapter list entry = 0x%p.\n",
tmp_adapter);
}
nesadapter->ref_count--;
if (!nesadapter->ref_count) {
if (nesadapter->hw_rev == NE020_REV) {
del_timer(&nesadapter->mh_timer);
}
del_timer(&nesadapter->lc_timer);
list_del(&nesadapter->list);
kfree(nesadapter);
}
}
/**
* nes_init_cqp
*/
int nes_init_cqp(struct nes_device *nesdev)
{
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_hw_cqp_qp_context *cqp_qp_context;
struct nes_hw_cqp_wqe *cqp_wqe;
struct nes_hw_ceq *ceq;
struct nes_hw_ceq *nic_ceq;
struct nes_hw_aeq *aeq;
void *vmem;
dma_addr_t pmem;
u32 count=0;
u32 cqp_head;
u64 u64temp;
u32 u32temp;
/* allocate CQP memory */
/* Need to add max_cq to the aeq size once cq overflow checking is added back */
/* SQ is 512 byte aligned, others are 256 byte aligned */
nesdev->cqp_mem_size = 512 +
(sizeof(struct nes_hw_cqp_wqe) * NES_CQP_SQ_SIZE) +
(sizeof(struct nes_hw_cqe) * NES_CCQ_SIZE) +
max(((u32)sizeof(struct nes_hw_ceqe) * NES_CCEQ_SIZE), (u32)256) +
max(((u32)sizeof(struct nes_hw_ceqe) * NES_NIC_CEQ_SIZE), (u32)256) +
(sizeof(struct nes_hw_aeqe) * nesadapter->max_qp) +
sizeof(struct nes_hw_cqp_qp_context);
nesdev->cqp_vbase = pci_alloc_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
&nesdev->cqp_pbase);
if (!nesdev->cqp_vbase) {
nes_debug(NES_DBG_INIT, "Unable to allocate memory for host descriptor rings\n");
return -ENOMEM;
}
memset(nesdev->cqp_vbase, 0, nesdev->cqp_mem_size);
/* Allocate a twice the number of CQP requests as the SQ size */
nesdev->nes_cqp_requests = kzalloc(sizeof(struct nes_cqp_request) *
2 * NES_CQP_SQ_SIZE, GFP_KERNEL);
if (nesdev->nes_cqp_requests == NULL) {
nes_debug(NES_DBG_INIT, "Unable to allocate memory CQP request entries.\n");
pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size, nesdev->cqp.sq_vbase,
nesdev->cqp.sq_pbase);
return -ENOMEM;
}
nes_debug(NES_DBG_INIT, "Allocated CQP structures at %p (phys = %016lX), size = %u.\n",
nesdev->cqp_vbase, (unsigned long)nesdev->cqp_pbase, nesdev->cqp_mem_size);
spin_lock_init(&nesdev->cqp.lock);
init_waitqueue_head(&nesdev->cqp.waitq);
/* Setup Various Structures */
vmem = (void *)(((unsigned long)nesdev->cqp_vbase + (512 - 1)) &
~(unsigned long)(512 - 1));
pmem = (dma_addr_t)(((unsigned long long)nesdev->cqp_pbase + (512 - 1)) &
~(unsigned long long)(512 - 1));
nesdev->cqp.sq_vbase = vmem;
nesdev->cqp.sq_pbase = pmem;
nesdev->cqp.sq_size = NES_CQP_SQ_SIZE;
nesdev->cqp.sq_head = 0;
nesdev->cqp.sq_tail = 0;
nesdev->cqp.qp_id = PCI_FUNC(nesdev->pcidev->devfn);
vmem += (sizeof(struct nes_hw_cqp_wqe) * nesdev->cqp.sq_size);
pmem += (sizeof(struct nes_hw_cqp_wqe) * nesdev->cqp.sq_size);
nesdev->ccq.cq_vbase = vmem;
nesdev->ccq.cq_pbase = pmem;
nesdev->ccq.cq_size = NES_CCQ_SIZE;
nesdev->ccq.cq_head = 0;
nesdev->ccq.ce_handler = nes_cqp_ce_handler;
nesdev->ccq.cq_number = PCI_FUNC(nesdev->pcidev->devfn);
vmem += (sizeof(struct nes_hw_cqe) * nesdev->ccq.cq_size);
pmem += (sizeof(struct nes_hw_cqe) * nesdev->ccq.cq_size);
nesdev->ceq_index = PCI_FUNC(nesdev->pcidev->devfn);
ceq = &nesadapter->ceq[nesdev->ceq_index];
ceq->ceq_vbase = vmem;
ceq->ceq_pbase = pmem;
ceq->ceq_size = NES_CCEQ_SIZE;
ceq->ceq_head = 0;
vmem += max(((u32)sizeof(struct nes_hw_ceqe) * ceq->ceq_size), (u32)256);
pmem += max(((u32)sizeof(struct nes_hw_ceqe) * ceq->ceq_size), (u32)256);
nesdev->nic_ceq_index = PCI_FUNC(nesdev->pcidev->devfn) + 8;
nic_ceq = &nesadapter->ceq[nesdev->nic_ceq_index];
nic_ceq->ceq_vbase = vmem;
nic_ceq->ceq_pbase = pmem;
nic_ceq->ceq_size = NES_NIC_CEQ_SIZE;
nic_ceq->ceq_head = 0;
vmem += max(((u32)sizeof(struct nes_hw_ceqe) * nic_ceq->ceq_size), (u32)256);
pmem += max(((u32)sizeof(struct nes_hw_ceqe) * nic_ceq->ceq_size), (u32)256);
aeq = &nesadapter->aeq[PCI_FUNC(nesdev->pcidev->devfn)];
aeq->aeq_vbase = vmem;
aeq->aeq_pbase = pmem;
aeq->aeq_size = nesadapter->max_qp;
aeq->aeq_head = 0;
/* Setup QP Context */
vmem += (sizeof(struct nes_hw_aeqe) * aeq->aeq_size);
pmem += (sizeof(struct nes_hw_aeqe) * aeq->aeq_size);
cqp_qp_context = vmem;
cqp_qp_context->context_words[0] =
cpu_to_le32((PCI_FUNC(nesdev->pcidev->devfn) << 12) + (2 << 10));
cqp_qp_context->context_words[1] = 0;
cqp_qp_context->context_words[2] = cpu_to_le32((u32)nesdev->cqp.sq_pbase);
cqp_qp_context->context_words[3] = cpu_to_le32(((u64)nesdev->cqp.sq_pbase) >> 32);
/* Write the address to Create CQP */
if ((sizeof(dma_addr_t) > 4)) {
nes_write_indexed(nesdev,
NES_IDX_CREATE_CQP_HIGH + (PCI_FUNC(nesdev->pcidev->devfn) * 8),
((u64)pmem) >> 32);
} else {
nes_write_indexed(nesdev,
NES_IDX_CREATE_CQP_HIGH + (PCI_FUNC(nesdev->pcidev->devfn) * 8), 0);
}
nes_write_indexed(nesdev,
NES_IDX_CREATE_CQP_LOW + (PCI_FUNC(nesdev->pcidev->devfn) * 8),
(u32)pmem);
INIT_LIST_HEAD(&nesdev->cqp_avail_reqs);
INIT_LIST_HEAD(&nesdev->cqp_pending_reqs);
for (count = 0; count < 2*NES_CQP_SQ_SIZE; count++) {
init_waitqueue_head(&nesdev->nes_cqp_requests[count].waitq);
list_add_tail(&nesdev->nes_cqp_requests[count].list, &nesdev->cqp_avail_reqs);
}
/* Write Create CCQ WQE */
cqp_head = nesdev->cqp.sq_head++;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
NES_CQP_CQ_CHK_OVERFLOW | ((u32)nesdev->ccq.cq_size << 16)));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
(nesdev->ccq.cq_number |
((u32)nesdev->ceq_index << 16)));
u64temp = (u64)nesdev->ccq.cq_pbase;
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
u64temp = (unsigned long)&nesdev->ccq;
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] =
cpu_to_le32((u32)(u64temp >> 1));
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
/* Write Create CEQ WQE */
cqp_head = nesdev->cqp.sq_head++;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_CREATE_CEQ + ((u32)nesdev->ceq_index << 8)));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CEQ_WQE_ELEMENT_COUNT_IDX, ceq->ceq_size);
u64temp = (u64)ceq->ceq_pbase;
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
/* Write Create AEQ WQE */
cqp_head = nesdev->cqp.sq_head++;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_CREATE_AEQ + ((u32)PCI_FUNC(nesdev->pcidev->devfn) << 8)));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_AEQ_WQE_ELEMENT_COUNT_IDX, aeq->aeq_size);
u64temp = (u64)aeq->aeq_pbase;
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
/* Write Create NIC CEQ WQE */
cqp_head = nesdev->cqp.sq_head++;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_CREATE_CEQ + ((u32)nesdev->nic_ceq_index << 8)));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_CEQ_WQE_ELEMENT_COUNT_IDX, nic_ceq->ceq_size);
u64temp = (u64)nic_ceq->ceq_pbase;
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
/* Poll until CCQP done */
count = 0;
do {
if (count++ > 1000) {
printk(KERN_ERR PFX "Error creating CQP\n");
pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
nesdev->cqp_vbase, nesdev->cqp_pbase);
return -1;
}
udelay(10);
} while (!(nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL + (PCI_FUNC(nesdev->pcidev->devfn) * 8)) & (1 << 8)));
nes_debug(NES_DBG_INIT, "CQP Status = 0x%08X\n", nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
u32temp = 0x04800000;
nes_write32(nesdev->regs+NES_WQE_ALLOC, u32temp | nesdev->cqp.qp_id);
/* wait for the CCQ, CEQ, and AEQ to get created */
count = 0;
do {
if (count++ > 1000) {
printk(KERN_ERR PFX "Error creating CCQ, CEQ, and AEQ\n");
pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size,
nesdev->cqp_vbase, nesdev->cqp_pbase);
return -1;
}
udelay(10);
} while (((nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)) & (15<<8)) != (15<<8)));
/* dump the QP status value */
nes_debug(NES_DBG_INIT, "QP Status = 0x%08X\n", nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
nesdev->cqp.sq_tail++;
return 0;
}
/**
* nes_destroy_cqp
*/
int nes_destroy_cqp(struct nes_device *nesdev)
{
struct nes_hw_cqp_wqe *cqp_wqe;
u32 count = 0;
u32 cqp_head;
unsigned long flags;
do {
if (count++ > 1000)
break;
udelay(10);
} while (!(nesdev->cqp.sq_head == nesdev->cqp.sq_tail));
/* Reset CCQ */
nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_RESET |
nesdev->ccq.cq_number);
/* Disable device interrupts */
nes_write32(nesdev->regs+NES_INT_MASK, 0x7fffffff);
spin_lock_irqsave(&nesdev->cqp.lock, flags);
/* Destroy the AEQ */
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_AEQ |
((u32)PCI_FUNC(nesdev->pcidev->devfn) << 8));
cqp_wqe->wqe_words[NES_CQP_WQE_COMP_CTX_HIGH_IDX] = 0;
/* Destroy the NIC CEQ */
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CEQ |
((u32)nesdev->nic_ceq_index << 8));
/* Destroy the CEQ */
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CEQ |
(nesdev->ceq_index << 8));
/* Destroy the CCQ */
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_CQ);
cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesdev->ccq.cq_number |
((u32)nesdev->ceq_index << 16));
/* Destroy CQP */
cqp_head = nesdev->cqp.sq_head++;
nesdev->cqp.sq_head &= nesdev->cqp.sq_size-1;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_DESTROY_QP |
NES_CQP_QP_TYPE_CQP);
cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesdev->cqp.qp_id);
barrier();
/* Ring doorbell (5 WQEs) */
nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x05800000 | nesdev->cqp.qp_id);
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
/* wait for the CCQ, CEQ, and AEQ to get destroyed */
count = 0;
do {
if (count++ > 1000) {
printk(KERN_ERR PFX "Function%d: Error destroying CCQ, CEQ, and AEQ\n",
PCI_FUNC(nesdev->pcidev->devfn));
break;
}
udelay(10);
} while (((nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL + (PCI_FUNC(nesdev->pcidev->devfn)*8)) & (15 << 8)) != 0));
/* dump the QP status value */
nes_debug(NES_DBG_SHUTDOWN, "Function%d: QP Status = 0x%08X\n",
PCI_FUNC(nesdev->pcidev->devfn),
nes_read_indexed(nesdev,
NES_IDX_QP_CONTROL+(PCI_FUNC(nesdev->pcidev->devfn)*8)));
kfree(nesdev->nes_cqp_requests);
/* Free the control structures */
pci_free_consistent(nesdev->pcidev, nesdev->cqp_mem_size, nesdev->cqp.sq_vbase,
nesdev->cqp.sq_pbase);
return 0;
}
/**
* nes_init_1g_phy
*/
static int nes_init_1g_phy(struct nes_device *nesdev, u8 phy_type, u8 phy_index)
{
u32 counter = 0;
u16 phy_data;
int ret = 0;
nes_read_1G_phy_reg(nesdev, 1, phy_index, &phy_data);
nes_write_1G_phy_reg(nesdev, 23, phy_index, 0xb000);
/* Reset the PHY */
nes_write_1G_phy_reg(nesdev, 0, phy_index, 0x8000);
udelay(100);
counter = 0;
do {
nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
if (counter++ > 100) {
ret = -1;
break;
}
} while (phy_data & 0x8000);
/* Setting no phy loopback */
phy_data &= 0xbfff;
phy_data |= 0x1140;
nes_write_1G_phy_reg(nesdev, 0, phy_index, phy_data);
nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
nes_read_1G_phy_reg(nesdev, 0x17, phy_index, &phy_data);
nes_read_1G_phy_reg(nesdev, 0x1e, phy_index, &phy_data);
/* Setting the interrupt mask */
nes_read_1G_phy_reg(nesdev, 0x19, phy_index, &phy_data);
nes_write_1G_phy_reg(nesdev, 0x19, phy_index, 0xffee);
nes_read_1G_phy_reg(nesdev, 0x19, phy_index, &phy_data);
/* turning on flow control */
nes_read_1G_phy_reg(nesdev, 4, phy_index, &phy_data);
nes_write_1G_phy_reg(nesdev, 4, phy_index, (phy_data & ~(0x03E0)) | 0xc00);
nes_read_1G_phy_reg(nesdev, 4, phy_index, &phy_data);
/* Clear Half duplex */
nes_read_1G_phy_reg(nesdev, 9, phy_index, &phy_data);
nes_write_1G_phy_reg(nesdev, 9, phy_index, phy_data & ~(0x0100));
nes_read_1G_phy_reg(nesdev, 9, phy_index, &phy_data);
nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
nes_write_1G_phy_reg(nesdev, 0, phy_index, phy_data | 0x0300);
return ret;
}
/**
* nes_init_2025_phy
*/
static int nes_init_2025_phy(struct nes_device *nesdev, u8 phy_type, u8 phy_index)
{
u32 temp_phy_data = 0;
u32 temp_phy_data2 = 0;
u32 counter = 0;
u32 sds;
u32 mac_index = nesdev->mac_index;
int ret = 0;
unsigned int first_attempt = 1;
/* Check firmware heartbeat */
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
udelay(1500);
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data2 = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if (temp_phy_data != temp_phy_data2) {
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if ((temp_phy_data & 0xff) > 0x20)
return 0;
printk(PFX "Reinitialize external PHY\n");
}
/* no heartbeat, configure the PHY */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0x0000, 0x8000);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc300, 0x0000);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
switch (phy_type) {
case NES_PHY_TYPE_ARGUS:
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x000C);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0008);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0001);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0098);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
/* setup LEDs */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x0007);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0009);
break;
case NES_PHY_TYPE_SFP_D:
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x0004);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0038);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0013);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0098);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
/* setup LEDs */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x0007);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0009);
break;
case NES_PHY_TYPE_KR:
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc316, 0x000A);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc318, 0x0052);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc302, 0x000C);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc319, 0x0010);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0027, 0x0013);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc31a, 0x0080);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0026, 0x0E00);
/* setup LEDs */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd006, 0x000B);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd007, 0x0003);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd008, 0x0004);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0022, 0x406D);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0023, 0x0020);
break;
}
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0x0028, 0xA528);
/* Bring PHY out of reset */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc300, 0x0002);
/* Check for heartbeat */
counter = 0;
mdelay(690);
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
do {
if (counter++ > 150) {
printk(PFX "No PHY heartbeat\n");
break;
}
mdelay(1);
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data2 = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
} while ((temp_phy_data2 == temp_phy_data));
/* wait for tracking */
counter = 0;
do {
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if (counter++ > 300) {
if (((temp_phy_data & 0xff) == 0x0) && first_attempt) {
first_attempt = 0;
counter = 0;
/* reset AMCC PHY and try again */
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x00c0);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x0040);
continue;
} else {
ret = 1;
break;
}
}
mdelay(10);
} while ((temp_phy_data & 0xff) < 0x30);
/* setup signal integrity */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd003, 0x0000);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00D, 0x00FE);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00E, 0x0032);
if (phy_type == NES_PHY_TYPE_KR) {
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00F, 0x000C);
} else {
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xF00F, 0x0002);
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xc314, 0x0063);
}
/* reset serdes */
sds = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200);
sds |= 0x1;
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200, sds);
sds &= 0xfffffffe;
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL0 + mac_index * 0x200, sds);
counter = 0;
while (((nes_read32(nesdev->regs + NES_SOFTWARE_RESET) & 0x00000040) != 0x00000040)
&& (counter++ < 5000))
;
return ret;
}
/**
* nes_init_phy
*/
int nes_init_phy(struct nes_device *nesdev)
{
struct nes_adapter *nesadapter = nesdev->nesadapter;
u32 mac_index = nesdev->mac_index;
u32 tx_config = 0;
unsigned long flags;
u8 phy_type = nesadapter->phy_type[mac_index];
u8 phy_index = nesadapter->phy_index[mac_index];
int ret = 0;
tx_config = nes_read_indexed(nesdev, NES_IDX_MAC_TX_CONFIG);
if (phy_type == NES_PHY_TYPE_1G) {
/* setup 1G MDIO operation */
tx_config &= 0xFFFFFFE3;
tx_config |= 0x04;
} else {
/* setup 10G MDIO operation */
tx_config &= 0xFFFFFFE3;
tx_config |= 0x15;
}
nes_write_indexed(nesdev, NES_IDX_MAC_TX_CONFIG, tx_config);
spin_lock_irqsave(&nesdev->nesadapter->phy_lock, flags);
switch (phy_type) {
case NES_PHY_TYPE_1G:
ret = nes_init_1g_phy(nesdev, phy_type, phy_index);
break;
case NES_PHY_TYPE_ARGUS:
case NES_PHY_TYPE_SFP_D:
case NES_PHY_TYPE_KR:
ret = nes_init_2025_phy(nesdev, phy_type, phy_index);
break;
}
spin_unlock_irqrestore(&nesdev->nesadapter->phy_lock, flags);
return ret;
}
/**
* nes_replenish_nic_rq
*/
static void nes_replenish_nic_rq(struct nes_vnic *nesvnic)
{
unsigned long flags;
dma_addr_t bus_address;
struct sk_buff *skb;
struct nes_hw_nic_rq_wqe *nic_rqe;
struct nes_hw_nic *nesnic;
struct nes_device *nesdev;
u32 rx_wqes_posted = 0;
nesnic = &nesvnic->nic;
nesdev = nesvnic->nesdev;
spin_lock_irqsave(&nesnic->rq_lock, flags);
if (nesnic->replenishing_rq !=0) {
if (((nesnic->rq_size-1) == atomic_read(&nesvnic->rx_skbs_needed)) &&
(atomic_read(&nesvnic->rx_skb_timer_running) == 0)) {
atomic_set(&nesvnic->rx_skb_timer_running, 1);
spin_unlock_irqrestore(&nesnic->rq_lock, flags);
nesvnic->rq_wqes_timer.expires = jiffies + (HZ/2); /* 1/2 second */
add_timer(&nesvnic->rq_wqes_timer);
} else
spin_unlock_irqrestore(&nesnic->rq_lock, flags);
return;
}
nesnic->replenishing_rq = 1;
spin_unlock_irqrestore(&nesnic->rq_lock, flags);
do {
skb = dev_alloc_skb(nesvnic->max_frame_size);
if (skb) {
skb->dev = nesvnic->netdev;
bus_address = pci_map_single(nesdev->pcidev,
skb->data, nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
nic_rqe = &nesnic->rq_vbase[nesvnic->nic.rq_head];
nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_1_0_IDX] =
cpu_to_le32(nesvnic->max_frame_size);
nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_3_2_IDX] = 0;
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX] =
cpu_to_le32((u32)bus_address);
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX] =
cpu_to_le32((u32)((u64)bus_address >> 32));
nesnic->rx_skb[nesnic->rq_head] = skb;
nesnic->rq_head++;
nesnic->rq_head &= nesnic->rq_size - 1;
atomic_dec(&nesvnic->rx_skbs_needed);
barrier();
if (++rx_wqes_posted == 255) {
nes_write32(nesdev->regs+NES_WQE_ALLOC, (rx_wqes_posted << 24) | nesnic->qp_id);
rx_wqes_posted = 0;
}
} else {
spin_lock_irqsave(&nesnic->rq_lock, flags);
if (((nesnic->rq_size-1) == atomic_read(&nesvnic->rx_skbs_needed)) &&
(atomic_read(&nesvnic->rx_skb_timer_running) == 0)) {
atomic_set(&nesvnic->rx_skb_timer_running, 1);
spin_unlock_irqrestore(&nesnic->rq_lock, flags);
nesvnic->rq_wqes_timer.expires = jiffies + (HZ/2); /* 1/2 second */
add_timer(&nesvnic->rq_wqes_timer);
} else
spin_unlock_irqrestore(&nesnic->rq_lock, flags);
break;
}
} while (atomic_read(&nesvnic->rx_skbs_needed));
barrier();
if (rx_wqes_posted)
nes_write32(nesdev->regs+NES_WQE_ALLOC, (rx_wqes_posted << 24) | nesnic->qp_id);
nesnic->replenishing_rq = 0;
}
/**
* nes_rq_wqes_timeout
*/
static void nes_rq_wqes_timeout(unsigned long parm)
{
struct nes_vnic *nesvnic = (struct nes_vnic *)parm;
printk("%s: Timer fired.\n", __func__);
atomic_set(&nesvnic->rx_skb_timer_running, 0);
if (atomic_read(&nesvnic->rx_skbs_needed))
nes_replenish_nic_rq(nesvnic);
}
static int nes_lro_get_skb_hdr(struct sk_buff *skb, void **iphdr,
void **tcph, u64 *hdr_flags, void *priv)
{
unsigned int ip_len;
struct iphdr *iph;
skb_reset_network_header(skb);
iph = ip_hdr(skb);
if (iph->protocol != IPPROTO_TCP)
return -1;
ip_len = ip_hdrlen(skb);
skb_set_transport_header(skb, ip_len);
*tcph = tcp_hdr(skb);
*hdr_flags = LRO_IPV4 | LRO_TCP;
*iphdr = iph;
return 0;
}
/**
* nes_init_nic_qp
*/
int nes_init_nic_qp(struct nes_device *nesdev, struct net_device *netdev)
{
struct nes_hw_cqp_wqe *cqp_wqe;
struct nes_hw_nic_sq_wqe *nic_sqe;
struct nes_hw_nic_qp_context *nic_context;
struct sk_buff *skb;
struct nes_hw_nic_rq_wqe *nic_rqe;
struct nes_vnic *nesvnic = netdev_priv(netdev);
unsigned long flags;
void *vmem;
dma_addr_t pmem;
u64 u64temp;
int ret;
u32 cqp_head;
u32 counter;
u32 wqe_count;
u8 jumbomode=0;
/* Allocate fragment, SQ, RQ, and CQ; Reuse CEQ based on the PCI function */
nesvnic->nic_mem_size = 256 +
(NES_NIC_WQ_SIZE * sizeof(struct nes_first_frag)) +
(NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe)) +
(NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe)) +
(NES_NIC_WQ_SIZE * 2 * sizeof(struct nes_hw_nic_cqe)) +
sizeof(struct nes_hw_nic_qp_context);
nesvnic->nic_vbase = pci_alloc_consistent(nesdev->pcidev, nesvnic->nic_mem_size,
&nesvnic->nic_pbase);
if (!nesvnic->nic_vbase) {
nes_debug(NES_DBG_INIT, "Unable to allocate memory for NIC host descriptor rings\n");
return -ENOMEM;
}
memset(nesvnic->nic_vbase, 0, nesvnic->nic_mem_size);
nes_debug(NES_DBG_INIT, "Allocated NIC QP structures at %p (phys = %016lX), size = %u.\n",
nesvnic->nic_vbase, (unsigned long)nesvnic->nic_pbase, nesvnic->nic_mem_size);
vmem = (void *)(((unsigned long)nesvnic->nic_vbase + (256 - 1)) &
~(unsigned long)(256 - 1));
pmem = (dma_addr_t)(((unsigned long long)nesvnic->nic_pbase + (256 - 1)) &
~(unsigned long long)(256 - 1));
/* Setup the first Fragment buffers */
nesvnic->nic.first_frag_vbase = vmem;
for (counter = 0; counter < NES_NIC_WQ_SIZE; counter++) {
nesvnic->nic.frag_paddr[counter] = pmem;
pmem += sizeof(struct nes_first_frag);
}
/* setup the SQ */
vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_first_frag));
nesvnic->nic.sq_vbase = (void *)vmem;
nesvnic->nic.sq_pbase = pmem;
nesvnic->nic.sq_head = 0;
nesvnic->nic.sq_tail = 0;
nesvnic->nic.sq_size = NES_NIC_WQ_SIZE;
for (counter = 0; counter < NES_NIC_WQ_SIZE; counter++) {
nic_sqe = &nesvnic->nic.sq_vbase[counter];
nic_sqe->wqe_words[NES_NIC_SQ_WQE_MISC_IDX] =
cpu_to_le32(NES_NIC_SQ_WQE_DISABLE_CHKSUM |
NES_NIC_SQ_WQE_COMPLETION);
nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX] =
cpu_to_le32((u32)NES_FIRST_FRAG_SIZE << 16);
nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX] =
cpu_to_le32((u32)nesvnic->nic.frag_paddr[counter]);
nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX] =
cpu_to_le32((u32)((u64)nesvnic->nic.frag_paddr[counter] >> 32));
}
nesvnic->get_cqp_request = nes_get_cqp_request;
nesvnic->post_cqp_request = nes_post_cqp_request;
nesvnic->mcrq_mcast_filter = NULL;
spin_lock_init(&nesvnic->nic.rq_lock);
/* setup the RQ */
vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe));
pmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_sq_wqe));
nesvnic->nic.rq_vbase = vmem;
nesvnic->nic.rq_pbase = pmem;
nesvnic->nic.rq_head = 0;
nesvnic->nic.rq_tail = 0;
nesvnic->nic.rq_size = NES_NIC_WQ_SIZE;
/* setup the CQ */
vmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe));
pmem += (NES_NIC_WQ_SIZE * sizeof(struct nes_hw_nic_rq_wqe));
if (nesdev->nesadapter->netdev_count > 2)
nesvnic->mcrq_qp_id = nesvnic->nic_index + 32;
else
nesvnic->mcrq_qp_id = nesvnic->nic.qp_id + 4;
nesvnic->nic_cq.cq_vbase = vmem;
nesvnic->nic_cq.cq_pbase = pmem;
nesvnic->nic_cq.cq_head = 0;
nesvnic->nic_cq.cq_size = NES_NIC_WQ_SIZE * 2;
nesvnic->nic_cq.ce_handler = nes_nic_napi_ce_handler;
/* Send CreateCQ request to CQP */
spin_lock_irqsave(&nesdev->cqp.lock, flags);
cqp_head = nesdev->cqp.sq_head;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(
NES_CQP_CREATE_CQ | NES_CQP_CQ_CEQ_VALID |
((u32)nesvnic->nic_cq.cq_size << 16));
cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(
nesvnic->nic_cq.cq_number | ((u32)nesdev->nic_ceq_index << 16));
u64temp = (u64)nesvnic->nic_cq.cq_pbase;
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_CQ_WQE_PBL_LOW_IDX, u64temp);
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] = 0;
u64temp = (unsigned long)&nesvnic->nic_cq;
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_LOW_IDX] = cpu_to_le32((u32)(u64temp >> 1));
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_CQ_CONTEXT_HIGH_IDX] =
cpu_to_le32(((u32)((u64temp) >> 33)) & 0x7FFFFFFF);
cqp_wqe->wqe_words[NES_CQP_CQ_WQE_DOORBELL_INDEX_HIGH_IDX] = 0;
if (++cqp_head >= nesdev->cqp.sq_size)
cqp_head = 0;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
/* Send CreateQP request to CQP */
nic_context = (void *)(&nesvnic->nic_cq.cq_vbase[nesvnic->nic_cq.cq_size]);
nic_context->context_words[NES_NIC_CTX_MISC_IDX] =
cpu_to_le32((u32)NES_NIC_CTX_SIZE |
((u32)PCI_FUNC(nesdev->pcidev->devfn) << 12));
nes_debug(NES_DBG_INIT, "RX_WINDOW_BUFFER_PAGE_TABLE_SIZE = 0x%08X, RX_WINDOW_BUFFER_SIZE = 0x%08X\n",
nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_PAGE_TABLE_SIZE),
nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_SIZE));
if (nes_read_indexed(nesdev, NES_IDX_RX_WINDOW_BUFFER_SIZE) != 0) {
nic_context->context_words[NES_NIC_CTX_MISC_IDX] |= cpu_to_le32(NES_NIC_BACK_STORE);
}
u64temp = (u64)nesvnic->nic.sq_pbase;
nic_context->context_words[NES_NIC_CTX_SQ_LOW_IDX] = cpu_to_le32((u32)u64temp);
nic_context->context_words[NES_NIC_CTX_SQ_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32));
u64temp = (u64)nesvnic->nic.rq_pbase;
nic_context->context_words[NES_NIC_CTX_RQ_LOW_IDX] = cpu_to_le32((u32)u64temp);
nic_context->context_words[NES_NIC_CTX_RQ_HIGH_IDX] = cpu_to_le32((u32)(u64temp >> 32));
cqp_wqe->wqe_words[NES_CQP_WQE_OPCODE_IDX] = cpu_to_le32(NES_CQP_CREATE_QP |
NES_CQP_QP_TYPE_NIC);
cqp_wqe->wqe_words[NES_CQP_WQE_ID_IDX] = cpu_to_le32(nesvnic->nic.qp_id);
u64temp = (u64)nesvnic->nic_cq.cq_pbase +
(nesvnic->nic_cq.cq_size * sizeof(struct nes_hw_nic_cqe));
set_wqe_64bit_value(cqp_wqe->wqe_words, NES_CQP_QP_WQE_CONTEXT_LOW_IDX, u64temp);
if (++cqp_head >= nesdev->cqp.sq_size)
cqp_head = 0;
nesdev->cqp.sq_head = cqp_head;
barrier();
/* Ring doorbell (2 WQEs) */
nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x02800000 | nesdev->cqp.qp_id);
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
nes_debug(NES_DBG_INIT, "Waiting for create NIC QP%u to complete.\n",
nesvnic->nic.qp_id);
ret = wait_event_timeout(nesdev->cqp.waitq, (nesdev->cqp.sq_tail == cqp_head),
NES_EVENT_TIMEOUT);
nes_debug(NES_DBG_INIT, "Create NIC QP%u completed, wait_event_timeout ret = %u.\n",
nesvnic->nic.qp_id, ret);
if (!ret) {
nes_debug(NES_DBG_INIT, "NIC QP%u create timeout expired\n", nesvnic->nic.qp_id);
pci_free_consistent(nesdev->pcidev, nesvnic->nic_mem_size, nesvnic->nic_vbase,
nesvnic->nic_pbase);
return -EIO;
}
/* Populate the RQ */
for (counter = 0; counter < (NES_NIC_WQ_SIZE - 1); counter++) {
skb = dev_alloc_skb(nesvnic->max_frame_size);
if (!skb) {
nes_debug(NES_DBG_INIT, "%s: out of memory for receive skb\n", netdev->name);
nes_destroy_nic_qp(nesvnic);
return -ENOMEM;
}
skb->dev = netdev;
pmem = pci_map_single(nesdev->pcidev, skb->data,
nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
nic_rqe = &nesvnic->nic.rq_vbase[counter];
nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_1_0_IDX] = cpu_to_le32(nesvnic->max_frame_size);
nic_rqe->wqe_words[NES_NIC_RQ_WQE_LENGTH_3_2_IDX] = 0;
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX] = cpu_to_le32((u32)pmem);
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX] = cpu_to_le32((u32)((u64)pmem >> 32));
nesvnic->nic.rx_skb[counter] = skb;
}
wqe_count = NES_NIC_WQ_SIZE - 1;
nesvnic->nic.rq_head = wqe_count;
barrier();
do {
counter = min(wqe_count, ((u32)255));
wqe_count -= counter;
nes_write32(nesdev->regs+NES_WQE_ALLOC, (counter << 24) | nesvnic->nic.qp_id);
} while (wqe_count);
init_timer(&nesvnic->rq_wqes_timer);
nesvnic->rq_wqes_timer.function = nes_rq_wqes_timeout;
nesvnic->rq_wqes_timer.data = (unsigned long)nesvnic;
nes_debug(NES_DBG_INIT, "NAPI support Enabled\n");
if (nesdev->nesadapter->et_use_adaptive_rx_coalesce)
{
nes_nic_init_timer(nesdev);
if (netdev->mtu > 1500)
jumbomode = 1;
nes_nic_init_timer_defaults(nesdev, jumbomode);
}
nesvnic->lro_mgr.max_aggr = nes_lro_max_aggr;
nesvnic->lro_mgr.max_desc = NES_MAX_LRO_DESCRIPTORS;
nesvnic->lro_mgr.lro_arr = nesvnic->lro_desc;
nesvnic->lro_mgr.get_skb_header = nes_lro_get_skb_hdr;
nesvnic->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
nesvnic->lro_mgr.dev = netdev;
nesvnic->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
nesvnic->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
return 0;
}
/**
* nes_destroy_nic_qp
*/
void nes_destroy_nic_qp(struct nes_vnic *nesvnic)
{
u64 u64temp;
dma_addr_t bus_address;
struct nes_device *nesdev = nesvnic->nesdev;
struct nes_hw_cqp_wqe *cqp_wqe;
struct nes_hw_nic_sq_wqe *nic_sqe;
struct nes_hw_nic_rq_wqe *nic_rqe;
__le16 *wqe_fragment_length;
u16 wqe_fragment_index;
u64 wqe_frag;
u32 cqp_head;
u32 wqm_cfg0;
unsigned long flags;
int ret;
/* clear wqe stall before destroying NIC QP */
wqm_cfg0 = nes_read_indexed(nesdev, NES_IDX_WQM_CONFIG0);
nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0 & 0xFFFF7FFF);
/* Free remaining NIC receive buffers */
while (nesvnic->nic.rq_head != nesvnic->nic.rq_tail) {
nic_rqe = &nesvnic->nic.rq_vbase[nesvnic->nic.rq_tail];
wqe_frag = (u64)le32_to_cpu(
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_LOW_IDX]);
wqe_frag |= ((u64)le32_to_cpu(
nic_rqe->wqe_words[NES_NIC_RQ_WQE_FRAG0_HIGH_IDX]))<<32;
pci_unmap_single(nesdev->pcidev, (dma_addr_t)wqe_frag,
nesvnic->max_frame_size, PCI_DMA_FROMDEVICE);
dev_kfree_skb(nesvnic->nic.rx_skb[nesvnic->nic.rq_tail++]);
nesvnic->nic.rq_tail &= (nesvnic->nic.rq_size - 1);
}
/* Free remaining NIC transmit buffers */
while (nesvnic->nic.sq_head != nesvnic->nic.sq_tail) {
nic_sqe = &nesvnic->nic.sq_vbase[nesvnic->nic.sq_tail];
wqe_fragment_index = 1;
wqe_fragment_length = (__le16 *)
&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
/* bump past the vlan tag */
wqe_fragment_length++;
if (le16_to_cpu(wqe_fragment_length[wqe_fragment_index]) != 0) {
u64temp = (u64)le32_to_cpu(
nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
wqe_fragment_index*2]);
u64temp += ((u64)le32_to_cpu(
nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX
+ wqe_fragment_index*2]))<<32;
bus_address = (dma_addr_t)u64temp;
if (test_and_clear_bit(nesvnic->nic.sq_tail,
nesvnic->nic.first_frag_overflow)) {
pci_unmap_single(nesdev->pcidev,
bus_address,
le16_to_cpu(wqe_fragment_length[
wqe_fragment_index++]),
PCI_DMA_TODEVICE);
}
for (; wqe_fragment_index < 5; wqe_fragment_index++) {
if (wqe_fragment_length[wqe_fragment_index]) {
u64temp = le32_to_cpu(
nic_sqe->wqe_words[
NES_NIC_SQ_WQE_FRAG0_LOW_IDX+
wqe_fragment_index*2]);
u64temp += ((u64)le32_to_cpu(
nic_sqe->wqe_words[
NES_NIC_SQ_WQE_FRAG0_HIGH_IDX+
wqe_fragment_index*2]))<<32;
bus_address = (dma_addr_t)u64temp;
pci_unmap_page(nesdev->pcidev,
bus_address,
le16_to_cpu(
wqe_fragment_length[
wqe_fragment_index]),
PCI_DMA_TODEVICE);
} else
break;
}
}
if (nesvnic->nic.tx_skb[nesvnic->nic.sq_tail])
dev_kfree_skb(
nesvnic->nic.tx_skb[nesvnic->nic.sq_tail]);
nesvnic->nic.sq_tail = (++nesvnic->nic.sq_tail)
& (nesvnic->nic.sq_size - 1);
}
spin_lock_irqsave(&nesdev->cqp.lock, flags);
/* Destroy NIC QP */
cqp_head = nesdev->cqp.sq_head;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_DESTROY_QP | NES_CQP_QP_TYPE_NIC));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
nesvnic->nic.qp_id);
if (++cqp_head >= nesdev->cqp.sq_size)
cqp_head = 0;
cqp_wqe = &nesdev->cqp.sq_vbase[cqp_head];
/* Destroy NIC CQ */
nes_fill_init_cqp_wqe(cqp_wqe, nesdev);
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_OPCODE_IDX,
(NES_CQP_DESTROY_CQ | ((u32)nesvnic->nic_cq.cq_size << 16)));
set_wqe_32bit_value(cqp_wqe->wqe_words, NES_CQP_WQE_ID_IDX,
(nesvnic->nic_cq.cq_number | ((u32)nesdev->nic_ceq_index << 16)));
if (++cqp_head >= nesdev->cqp.sq_size)
cqp_head = 0;
nesdev->cqp.sq_head = cqp_head;
barrier();
/* Ring doorbell (2 WQEs) */
nes_write32(nesdev->regs+NES_WQE_ALLOC, 0x02800000 | nesdev->cqp.qp_id);
spin_unlock_irqrestore(&nesdev->cqp.lock, flags);
nes_debug(NES_DBG_SHUTDOWN, "Waiting for CQP, cqp_head=%u, cqp.sq_head=%u,"
" cqp.sq_tail=%u, cqp.sq_size=%u\n",
cqp_head, nesdev->cqp.sq_head,
nesdev->cqp.sq_tail, nesdev->cqp.sq_size);
ret = wait_event_timeout(nesdev->cqp.waitq, (nesdev->cqp.sq_tail == cqp_head),
NES_EVENT_TIMEOUT);
nes_debug(NES_DBG_SHUTDOWN, "Destroy NIC QP returned, wait_event_timeout ret = %u, cqp_head=%u,"
" cqp.sq_head=%u, cqp.sq_tail=%u\n",
ret, cqp_head, nesdev->cqp.sq_head, nesdev->cqp.sq_tail);
if (!ret) {
nes_debug(NES_DBG_SHUTDOWN, "NIC QP%u destroy timeout expired\n",
nesvnic->nic.qp_id);
}
pci_free_consistent(nesdev->pcidev, nesvnic->nic_mem_size, nesvnic->nic_vbase,
nesvnic->nic_pbase);
/* restore old wqm_cfg0 value */
nes_write_indexed(nesdev, NES_IDX_WQM_CONFIG0, wqm_cfg0);
}
/**
* nes_napi_isr
*/
int nes_napi_isr(struct nes_device *nesdev)
{
struct nes_adapter *nesadapter = nesdev->nesadapter;
u32 int_stat;
if (nesdev->napi_isr_ran) {
/* interrupt status has already been read in ISR */
int_stat = nesdev->int_stat;
} else {
int_stat = nes_read32(nesdev->regs + NES_INT_STAT);
nesdev->int_stat = int_stat;
nesdev->napi_isr_ran = 1;
}
int_stat &= nesdev->int_req;
/* iff NIC, process here, else wait for DPC */
if ((int_stat) && ((int_stat & 0x0000ff00) == int_stat)) {
nesdev->napi_isr_ran = 0;
nes_write32(nesdev->regs + NES_INT_STAT,
(int_stat &
~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0 | NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3)));
/* Process the CEQs */
nes_process_ceq(nesdev, &nesdev->nesadapter->ceq[nesdev->nic_ceq_index]);
if (unlikely((((nesadapter->et_rx_coalesce_usecs_irq) &&
(!nesadapter->et_use_adaptive_rx_coalesce)) ||
((nesadapter->et_use_adaptive_rx_coalesce) &&
(nesdev->deepcq_count > nesadapter->et_pkt_rate_low))))) {
if ((nesdev->int_req & NES_INT_TIMER) == 0) {
/* Enable Periodic timer interrupts */
nesdev->int_req |= NES_INT_TIMER;
/* ack any pending periodic timer interrupts so we don't get an immediate interrupt */
/* TODO: need to also ack other unused periodic timer values, get from nesadapter */
nes_write32(nesdev->regs+NES_TIMER_STAT,
nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
nes_write32(nesdev->regs+NES_INTF_INT_MASK,
~(nesdev->intf_int_req | NES_INTF_PERIODIC_TIMER));
}
if (unlikely(nesadapter->et_use_adaptive_rx_coalesce))
{
nes_nic_init_timer(nesdev);
}
/* Enable interrupts, except CEQs */
nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
} else {
/* Enable interrupts, make sure timer is off */
nesdev->int_req &= ~NES_INT_TIMER;
nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
}
nesdev->deepcq_count = 0;
return 1;
} else {
return 0;
}
}
static void process_critical_error(struct nes_device *nesdev)
{
u32 debug_error;
u32 nes_idx_debug_error_masks0 = 0;
u16 error_module = 0;
debug_error = nes_read_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS);
printk(KERN_ERR PFX "Critical Error reported by device!!! 0x%02X\n",
(u16)debug_error);
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_CONTROL_STATUS,
0x01010000 | (debug_error & 0x0000ffff));
if (crit_err_count++ > 10)
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS1, 1 << 0x17);
error_module = (u16) (debug_error & 0x1F00) >> 8;
if (++nesdev->nesadapter->crit_error_count[error_module-1] >=
nes_max_critical_error_count) {
printk(KERN_ERR PFX "Masking off critical error for module "
"0x%02X\n", (u16)error_module);
nes_idx_debug_error_masks0 = nes_read_indexed(nesdev,
NES_IDX_DEBUG_ERROR_MASKS0);
nes_write_indexed(nesdev, NES_IDX_DEBUG_ERROR_MASKS0,
nes_idx_debug_error_masks0 | (1 << error_module));
}
}
/**
* nes_dpc
*/
void nes_dpc(unsigned long param)
{
struct nes_device *nesdev = (struct nes_device *)param;
struct nes_adapter *nesadapter = nesdev->nesadapter;
u32 counter;
u32 loop_counter = 0;
u32 int_status_bit;
u32 int_stat;
u32 timer_stat;
u32 temp_int_stat;
u32 intf_int_stat;
u32 processed_intf_int = 0;
u16 processed_timer_int = 0;
u16 completion_ints = 0;
u16 timer_ints = 0;
/* nes_debug(NES_DBG_ISR, "\n"); */
do {
timer_stat = 0;
if (nesdev->napi_isr_ran) {
nesdev->napi_isr_ran = 0;
int_stat = nesdev->int_stat;
} else
int_stat = nes_read32(nesdev->regs+NES_INT_STAT);
if (processed_intf_int != 0)
int_stat &= nesdev->int_req & ~NES_INT_INTF;
else
int_stat &= nesdev->int_req;
if (processed_timer_int == 0) {
processed_timer_int = 1;
if (int_stat & NES_INT_TIMER) {
timer_stat = nes_read32(nesdev->regs + NES_TIMER_STAT);
if ((timer_stat & nesdev->timer_int_req) == 0) {
int_stat &= ~NES_INT_TIMER;
}
}
} else {
int_stat &= ~NES_INT_TIMER;
}
if (int_stat) {
if (int_stat & ~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0|
NES_INT_MAC1|NES_INT_MAC2 | NES_INT_MAC3)) {
/* Ack the interrupts */
nes_write32(nesdev->regs+NES_INT_STAT,
(int_stat & ~(NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0|
NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3)));
}
temp_int_stat = int_stat;
for (counter = 0, int_status_bit = 1; counter < 16; counter++) {
if (int_stat & int_status_bit) {
nes_process_ceq(nesdev, &nesadapter->ceq[counter]);
temp_int_stat &= ~int_status_bit;
completion_ints = 1;
}
if (!(temp_int_stat & 0x0000ffff))
break;
int_status_bit <<= 1;
}
/* Process the AEQ for this pci function */
int_status_bit = 1 << (16 + PCI_FUNC(nesdev->pcidev->devfn));
if (int_stat & int_status_bit) {
nes_process_aeq(nesdev, &nesadapter->aeq[PCI_FUNC(nesdev->pcidev->devfn)]);
}
/* Process the MAC interrupt for this pci function */
int_status_bit = 1 << (24 + nesdev->mac_index);
if (int_stat & int_status_bit) {
nes_process_mac_intr(nesdev, nesdev->mac_index);
}
if (int_stat & NES_INT_TIMER) {
if (timer_stat & nesdev->timer_int_req) {
nes_write32(nesdev->regs + NES_TIMER_STAT,
(timer_stat & nesdev->timer_int_req) |
~(nesdev->nesadapter->timer_int_req));
timer_ints = 1;
}
}
if (int_stat & NES_INT_INTF) {
processed_intf_int = 1;
intf_int_stat = nes_read32(nesdev->regs+NES_INTF_INT_STAT);
intf_int_stat &= nesdev->intf_int_req;
if (NES_INTF_INT_CRITERR & intf_int_stat) {
process_critical_error(nesdev);
}
if (NES_INTF_INT_PCIERR & intf_int_stat) {
printk(KERN_ERR PFX "PCI Error reported by device!!!\n");
BUG();
}
if (NES_INTF_INT_AEQ_OFLOW & intf_int_stat) {
printk(KERN_ERR PFX "AEQ Overflow reported by device!!!\n");
BUG();
}
nes_write32(nesdev->regs+NES_INTF_INT_STAT, intf_int_stat);
}
if (int_stat & NES_INT_TSW) {
}
}
/* Don't use the interface interrupt bit stay in loop */
int_stat &= ~NES_INT_INTF | NES_INT_TIMER | NES_INT_MAC0 |
NES_INT_MAC1 | NES_INT_MAC2 | NES_INT_MAC3;
} while ((int_stat != 0) && (loop_counter++ < MAX_DPC_ITERATIONS));
if (timer_ints == 1) {
if ((nesadapter->et_rx_coalesce_usecs_irq) || (nesadapter->et_use_adaptive_rx_coalesce)) {
if (completion_ints == 0) {
nesdev->timer_only_int_count++;
if (nesdev->timer_only_int_count>=nesadapter->timer_int_limit) {
nesdev->timer_only_int_count = 0;
nesdev->int_req &= ~NES_INT_TIMER;
nes_write32(nesdev->regs + NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
nes_write32(nesdev->regs + NES_INT_MASK, ~nesdev->int_req);
} else {
nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
}
} else {
if (unlikely(nesadapter->et_use_adaptive_rx_coalesce))
{
nes_nic_init_timer(nesdev);
}
nesdev->timer_only_int_count = 0;
nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
}
} else {
nesdev->timer_only_int_count = 0;
nesdev->int_req &= ~NES_INT_TIMER;
nes_write32(nesdev->regs+NES_INTF_INT_MASK, ~(nesdev->intf_int_req));
nes_write32(nesdev->regs+NES_TIMER_STAT,
nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
}
} else {
if ( (completion_ints == 1) &&
(((nesadapter->et_rx_coalesce_usecs_irq) &&
(!nesadapter->et_use_adaptive_rx_coalesce)) ||
((nesdev->deepcq_count > nesadapter->et_pkt_rate_low) &&
(nesadapter->et_use_adaptive_rx_coalesce) )) ) {
/* nes_debug(NES_DBG_ISR, "Enabling periodic timer interrupt.\n" ); */
nesdev->timer_only_int_count = 0;
nesdev->int_req |= NES_INT_TIMER;
nes_write32(nesdev->regs+NES_TIMER_STAT,
nesdev->timer_int_req | ~(nesdev->nesadapter->timer_int_req));
nes_write32(nesdev->regs+NES_INTF_INT_MASK,
~(nesdev->intf_int_req | NES_INTF_PERIODIC_TIMER));
nes_write32(nesdev->regs+NES_INT_MASK, 0x0000ffff | (~nesdev->int_req));
} else {
nes_write32(nesdev->regs+NES_INT_MASK, ~nesdev->int_req);
}
}
nesdev->deepcq_count = 0;
}
/**
* nes_process_ceq
*/
static void nes_process_ceq(struct nes_device *nesdev, struct nes_hw_ceq *ceq)
{
u64 u64temp;
struct nes_hw_cq *cq;
u32 head;
u32 ceq_size;
/* nes_debug(NES_DBG_CQ, "\n"); */
head = ceq->ceq_head;
ceq_size = ceq->ceq_size;
do {
if (le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX]) &
NES_CEQE_VALID) {
u64temp = (((u64)(le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX]))) << 32) |
((u64)(le32_to_cpu(ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_LOW_IDX])));
u64temp <<= 1;
cq = *((struct nes_hw_cq **)&u64temp);
/* nes_debug(NES_DBG_CQ, "pCQ = %p\n", cq); */
barrier();
ceq->ceq_vbase[head].ceqe_words[NES_CEQE_CQ_CTX_HIGH_IDX] = 0;
/* call the event handler */
cq->ce_handler(nesdev, cq);
if (++head >= ceq_size)
head = 0;
} else {
break;
}
} while (1);
ceq->ceq_head = head;
}
/**
* nes_process_aeq
*/
static void nes_process_aeq(struct nes_device *nesdev, struct nes_hw_aeq *aeq)
{
/* u64 u64temp; */
u32 head;
u32 aeq_size;
u32 aeqe_misc;
u32 aeqe_cq_id;
struct nes_hw_aeqe volatile *aeqe;
head = aeq->aeq_head;
aeq_size = aeq->aeq_size;
do {
aeqe = &aeq->aeq_vbase[head];
if ((le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]) & NES_AEQE_VALID) == 0)
break;
aeqe_misc = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_MISC_IDX]);
aeqe_cq_id = le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_QP_CQ_ID_IDX]);
if (aeqe_misc & (NES_AEQE_QP|NES_AEQE_CQ)) {
if (aeqe_cq_id >= NES_FIRST_QPN) {
/* dealing with an accelerated QP related AE */
/*
* u64temp = (((u64)(le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_HIGH_IDX]))) << 32) |
* ((u64)(le32_to_cpu(aeqe->aeqe_words[NES_AEQE_COMP_CTXT_LOW_IDX])));
*/
nes_process_iwarp_aeqe(nesdev, (struct nes_hw_aeqe *)aeqe);
} else {
/* TODO: dealing with a CQP related AE */
nes_debug(NES_DBG_AEQ, "Processing CQP related AE, misc = 0x%04X\n",
(u16)(aeqe_misc >> 16));
}
}
aeqe->aeqe_words[NES_AEQE_MISC_IDX] = 0;
if (++head >= aeq_size)
head = 0;
nes_write32(nesdev->regs + NES_AEQ_ALLOC, 1 << 16);
}
while (1);
aeq->aeq_head = head;
}
static void nes_reset_link(struct nes_device *nesdev, u32 mac_index)
{
struct nes_adapter *nesadapter = nesdev->nesadapter;
u32 reset_value;
u32 i=0;
u32 u32temp;
if (nesadapter->hw_rev == NE020_REV) {
return;
}
mh_detected++;
reset_value = nes_read32(nesdev->regs+NES_SOFTWARE_RESET);
if ((mac_index == 0) || ((mac_index == 1) && (nesadapter->OneG_Mode)))
reset_value |= 0x0000001d;
else
reset_value |= 0x0000002d;
if (4 <= (nesadapter->link_interrupt_count[mac_index] / ((u16)NES_MAX_LINK_INTERRUPTS))) {
if ((!nesadapter->OneG_Mode) && (nesadapter->port_count == 2)) {
nesadapter->link_interrupt_count[0] = 0;
nesadapter->link_interrupt_count[1] = 0;
u32temp = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
if (0x00000040 & u32temp)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F088);
else
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
reset_value |= 0x0000003d;
}
nesadapter->link_interrupt_count[mac_index] = 0;
}
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
while (((nes_read32(nesdev->regs+NES_SOFTWARE_RESET)
& 0x00000040) != 0x00000040) && (i++ < 5000));
if (0x0000003d == (reset_value & 0x0000003d)) {
u32 pcs_control_status0, pcs_control_status1;
for (i = 0; i < 10; i++) {
pcs_control_status0 = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0);
pcs_control_status1 = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
if (((0x0F000000 == (pcs_control_status0 & 0x0F000000))
&& (pcs_control_status0 & 0x00100000))
|| ((0x0F000000 == (pcs_control_status1 & 0x0F000000))
&& (pcs_control_status1 & 0x00100000)))
continue;
else
break;
}
if (10 == i) {
u32temp = nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1);
if (0x00000040 & u32temp)
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F088);
else
nes_write_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_CONTROL1, 0x0000F0C8);
nes_write32(nesdev->regs+NES_SOFTWARE_RESET, reset_value);
while (((nes_read32(nesdev->regs + NES_SOFTWARE_RESET)
& 0x00000040) != 0x00000040) && (i++ < 5000));
}
}
}
/**
* nes_process_mac_intr
*/
static void nes_process_mac_intr(struct nes_device *nesdev, u32 mac_number)
{
unsigned long flags;
u32 pcs_control_status;
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_vnic *nesvnic;
u32 mac_status;
u32 mac_index = nesdev->mac_index;
u32 u32temp;
u16 phy_data;
u16 temp_phy_data;
u32 pcs_val = 0x0f0f0000;
u32 pcs_mask = 0x0f1f0000;
u32 cdr_ctrl;
spin_lock_irqsave(&nesadapter->phy_lock, flags);
if (nesadapter->mac_sw_state[mac_number] != NES_MAC_SW_IDLE) {
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
return;
}
nesadapter->mac_sw_state[mac_number] = NES_MAC_SW_INTERRUPT;
/* ack the MAC interrupt */
mac_status = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (mac_index * 0x200));
/* Clear the interrupt */
nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (mac_index * 0x200), mac_status);
nes_debug(NES_DBG_PHY, "MAC%u interrupt status = 0x%X.\n", mac_number, mac_status);
if (mac_status & (NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT)) {
nesdev->link_status_interrupts++;
if (0 == (++nesadapter->link_interrupt_count[mac_index] % ((u16)NES_MAX_LINK_INTERRUPTS)))
nes_reset_link(nesdev, mac_index);
/* read the PHY interrupt status register */
if ((nesadapter->OneG_Mode) &&
(nesadapter->phy_type[mac_index] != NES_PHY_TYPE_PUMA_1G)) {
do {
nes_read_1G_phy_reg(nesdev, 0x1a,
nesadapter->phy_index[mac_index], &phy_data);
nes_debug(NES_DBG_PHY, "Phy%d data from register 0x1a = 0x%X.\n",
nesadapter->phy_index[mac_index], phy_data);
} while (phy_data&0x8000);
temp_phy_data = 0;
do {
nes_read_1G_phy_reg(nesdev, 0x11,
nesadapter->phy_index[mac_index], &phy_data);
nes_debug(NES_DBG_PHY, "Phy%d data from register 0x11 = 0x%X.\n",
nesadapter->phy_index[mac_index], phy_data);
if (temp_phy_data == phy_data)
break;
temp_phy_data = phy_data;
} while (1);
nes_read_1G_phy_reg(nesdev, 0x1e,
nesadapter->phy_index[mac_index], &phy_data);
nes_debug(NES_DBG_PHY, "Phy%d data from register 0x1e = 0x%X.\n",
nesadapter->phy_index[mac_index], phy_data);
nes_read_1G_phy_reg(nesdev, 1,
nesadapter->phy_index[mac_index], &phy_data);
nes_debug(NES_DBG_PHY, "1G phy%u data from register 1 = 0x%X\n",
nesadapter->phy_index[mac_index], phy_data);
if (temp_phy_data & 0x1000) {
nes_debug(NES_DBG_PHY, "The Link is up according to the PHY\n");
phy_data = 4;
} else {
nes_debug(NES_DBG_PHY, "The Link is down according to the PHY\n");
}
}
nes_debug(NES_DBG_PHY, "Eth SERDES Common Status: 0=0x%08X, 1=0x%08X\n",
nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0),
nes_read_indexed(nesdev, NES_IDX_ETH_SERDES_COMMON_STATUS0+0x200));
if (nesadapter->phy_type[mac_index] == NES_PHY_TYPE_PUMA_1G) {
switch (mac_index) {
case 1:
case 3:
pcs_control_status = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + 0x200);
break;
default:
pcs_control_status = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0);
break;
}
} else {
pcs_control_status = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + ((mac_index & 1) * 0x200));
pcs_control_status = nes_read_indexed(nesdev,
NES_IDX_PHY_PCS_CONTROL_STATUS0 + ((mac_index & 1) * 0x200));
}
nes_debug(NES_DBG_PHY, "PCS PHY Control/Status%u: 0x%08X\n",
mac_index, pcs_control_status);
if ((nesadapter->OneG_Mode) &&
(nesadapter->phy_type[mac_index] != NES_PHY_TYPE_PUMA_1G)) {
u32temp = 0x01010000;
if (nesadapter->port_count > 2) {
u32temp |= 0x02020000;
}
if ((pcs_control_status & u32temp)!= u32temp) {
phy_data = 0;
nes_debug(NES_DBG_PHY, "PCS says the link is down\n");
}
} else {
switch (nesadapter->phy_type[mac_index]) {
case NES_PHY_TYPE_ARGUS:
case NES_PHY_TYPE_SFP_D:
case NES_PHY_TYPE_KR:
/* clear the alarms */
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0x0008);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc001);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc002);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc005);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 4, 0xc006);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9003);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9004);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9005);
/* check link status */
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 1, 0x9003);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
nes_read_10G_phy_reg(nesdev, nesadapter->phy_index[mac_index], 3, 0x0021);
phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
phy_data = (!temp_phy_data && (phy_data == 0x8000)) ? 0x4 : 0x0;
nes_debug(NES_DBG_PHY, "%s: Phy data = 0x%04X, link was %s.\n",
__func__, phy_data, nesadapter->mac_link_down[mac_index] ? "DOWN" : "UP");
break;
case NES_PHY_TYPE_PUMA_1G:
if (mac_index < 2)
pcs_val = pcs_mask = 0x01010000;
else
pcs_val = pcs_mask = 0x02020000;
/* fall through */
default:
phy_data = (pcs_val == (pcs_control_status & pcs_mask)) ? 0x4 : 0x0;
break;
}
}
if (phy_data & 0x0004) {
if (wide_ppm_offset &&
(nesadapter->phy_type[mac_index] == NES_PHY_TYPE_CX4) &&
(nesadapter->hw_rev != NE020_REV)) {
cdr_ctrl = nes_read_indexed(nesdev,
NES_IDX_ETH_SERDES_CDR_CONTROL0 +
mac_index * 0x200);
nes_write_indexed(nesdev,
NES_IDX_ETH_SERDES_CDR_CONTROL0 +
mac_index * 0x200,
cdr_ctrl | 0x000F0000);
}
nesadapter->mac_link_down[mac_index] = 0;
list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
nes_debug(NES_DBG_PHY, "The Link is UP!!. linkup was %d\n",
nesvnic->linkup);
if (nesvnic->linkup == 0) {
printk(PFX "The Link is now up for port %s, netdev %p.\n",
nesvnic->netdev->name, nesvnic->netdev);
if (netif_queue_stopped(nesvnic->netdev))
netif_start_queue(nesvnic->netdev);
nesvnic->linkup = 1;
netif_carrier_on(nesvnic->netdev);
}
}
} else {
if (wide_ppm_offset &&
(nesadapter->phy_type[mac_index] == NES_PHY_TYPE_CX4) &&
(nesadapter->hw_rev != NE020_REV)) {
cdr_ctrl = nes_read_indexed(nesdev,
NES_IDX_ETH_SERDES_CDR_CONTROL0 +
mac_index * 0x200);
nes_write_indexed(nesdev,
NES_IDX_ETH_SERDES_CDR_CONTROL0 +
mac_index * 0x200,
cdr_ctrl & 0xFFF0FFFF);
}
nesadapter->mac_link_down[mac_index] = 1;
list_for_each_entry(nesvnic, &nesadapter->nesvnic_list[mac_index], list) {
nes_debug(NES_DBG_PHY, "The Link is Down!!. linkup was %d\n",
nesvnic->linkup);
if (nesvnic->linkup == 1) {
printk(PFX "The Link is now down for port %s, netdev %p.\n",
nesvnic->netdev->name, nesvnic->netdev);
if (!(netif_queue_stopped(nesvnic->netdev)))
netif_stop_queue(nesvnic->netdev);
nesvnic->linkup = 0;
netif_carrier_off(nesvnic->netdev);
}
}
}
}
spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
nesadapter->mac_sw_state[mac_number] = NES_MAC_SW_IDLE;
}
static void nes_nic_napi_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
{
struct nes_vnic *nesvnic = container_of(cq, struct nes_vnic, nic_cq);
napi_schedule(&nesvnic->napi);
}
/* The MAX_RQES_TO_PROCESS defines how many max read requests to complete before
* getting out of nic_ce_handler
*/
#define MAX_RQES_TO_PROCESS 384
/**
* nes_nic_ce_handler
*/
void nes_nic_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
{
u64 u64temp;
dma_addr_t bus_address;
struct nes_hw_nic *nesnic;
struct nes_vnic *nesvnic = container_of(cq, struct nes_vnic, nic_cq);
struct nes_adapter *nesadapter = nesdev->nesadapter;
struct nes_hw_nic_rq_wqe *nic_rqe;
struct nes_hw_nic_sq_wqe *nic_sqe;
struct sk_buff *skb;
struct sk_buff *rx_skb;
__le16 *wqe_fragment_length;
u32 head;
u32 cq_size;
u32 rx_pkt_size;
u32 cqe_count=0;
u32 cqe_errv;
u32 cqe_misc;
u16 wqe_fragment_index = 1; /* first fragment (0) is used by copy buffer */
u16 vlan_tag;
u16 pkt_type;
u16 rqes_processed = 0;
u8 sq_cqes = 0;
u8 nes_use_lro = 0;
head = cq->cq_head;
cq_size = cq->cq_size;
cq->cqes_pending = 1;
if (nesvnic->netdev->features & NETIF_F_LRO)
nes_use_lro = 1;
do {
if (le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_NIC_CQE_MISC_IDX]) &
NES_NIC_CQE_VALID) {
nesnic = &nesvnic->nic;
cqe_misc = le32_to_cpu(cq->cq_vbase[head].cqe_words[NES_NIC_CQE_MISC_IDX]);
if (cqe_misc & NES_NIC_CQE_SQ) {
sq_cqes++;
wqe_fragment_index = 1;
nic_sqe = &nesnic->sq_vbase[nesnic->sq_tail];
skb = nesnic->tx_skb[nesnic->sq_tail];
wqe_fragment_length = (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
/* bump past the vlan tag */
wqe_fragment_length++;
if (le16_to_cpu(wqe_fragment_length[wqe_fragment_index]) != 0) {
u64temp = (u64) le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX +
wqe_fragment_index * 2]);
u64temp += ((u64)le32_to_cpu(nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_HIGH_IDX +
wqe_fragment_index * 2])) << 32;
bus_address = (dma_addr_t)u64temp;
if (test_and_clear_bit(nesnic->sq_tail, nesnic->first_frag_overflow)) {
pci_unmap_single(nesdev->pcidev,
bus_address,
le16_to_cpu(wqe_fragment_length[wqe_fragment_index++]),
PCI_DMA_TODEVICE);
}
for (; wqe_fragment_index < 5; wqe_fragment_index++) {
if (wqe_fragment_length[wqe_fragment_index]) {