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numam-dpdk/drivers/net/cxgbe/cxgbe_main.c
Thomas Monjalon 4c00cfdc0e remove useless memzone includes 
The memzone header is often included without good reason.

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2017-11-06 22:12:08 +01:00

1360 lines
37 KiB
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/*-
* BSD LICENSE
*
* Copyright(c) 2014-2017 Chelsio Communications.
* All rights reserved.
*
* 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.
* * Neither the name of Chelsio Communications nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/queue.h>
#include <stdio.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <inttypes.h>
#include <netinet/in.h>
#include <rte_byteorder.h>
#include <rte_common.h>
#include <rte_cycles.h>
#include <rte_interrupts.h>
#include <rte_log.h>
#include <rte_debug.h>
#include <rte_pci.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_memory.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_alarm.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_ethdev_pci.h>
#include <rte_malloc.h>
#include <rte_random.h>
#include <rte_dev.h>
#include "common.h"
#include "t4_regs.h"
#include "t4_msg.h"
#include "cxgbe.h"
/*
* Response queue handler for the FW event queue.
*/
static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp,
__rte_unused const struct pkt_gl *gl)
{
u8 opcode = ((const struct rss_header *)rsp)->opcode;
rsp++; /* skip RSS header */
/*
* FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG.
*/
if (unlikely(opcode == CPL_FW4_MSG &&
((const struct cpl_fw4_msg *)rsp)->type ==
FW_TYPE_RSSCPL)) {
rsp++;
opcode = ((const struct rss_header *)rsp)->opcode;
rsp++;
if (opcode != CPL_SGE_EGR_UPDATE) {
dev_err(q->adapter, "unexpected FW4/CPL %#x on FW event queue\n",
opcode);
goto out;
}
}
if (likely(opcode == CPL_SGE_EGR_UPDATE)) {
/* do nothing */
} else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) {
const struct cpl_fw6_msg *msg = (const void *)rsp;
t4_handle_fw_rpl(q->adapter, msg->data);
} else {
dev_err(adapter, "unexpected CPL %#x on FW event queue\n",
opcode);
}
out:
return 0;
}
int setup_sge_fwevtq(struct adapter *adapter)
{
struct sge *s = &adapter->sge;
int err = 0;
int msi_idx = 0;
err = t4_sge_alloc_rxq(adapter, &s->fw_evtq, true, adapter->eth_dev,
msi_idx, NULL, fwevtq_handler, -1, NULL, 0,
rte_socket_id());
return err;
}
static int closest_timer(const struct sge *s, int time)
{
unsigned int i, match = 0;
int delta, min_delta = INT_MAX;
for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
delta = time - s->timer_val[i];
if (delta < 0)
delta = -delta;
if (delta < min_delta) {
min_delta = delta;
match = i;
}
}
return match;
}
static int closest_thres(const struct sge *s, int thres)
{
unsigned int i, match = 0;
int delta, min_delta = INT_MAX;
for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
delta = thres - s->counter_val[i];
if (delta < 0)
delta = -delta;
if (delta < min_delta) {
min_delta = delta;
match = i;
}
}
return match;
}
/**
* cxgb4_set_rspq_intr_params - set a queue's interrupt holdoff parameters
* @q: the Rx queue
* @us: the hold-off time in us, or 0 to disable timer
* @cnt: the hold-off packet count, or 0 to disable counter
*
* Sets an Rx queue's interrupt hold-off time and packet count. At least
* one of the two needs to be enabled for the queue to generate interrupts.
*/
int cxgb4_set_rspq_intr_params(struct sge_rspq *q, unsigned int us,
unsigned int cnt)
{
struct adapter *adap = q->adapter;
unsigned int timer_val;
if (cnt) {
int err;
u32 v, new_idx;
new_idx = closest_thres(&adap->sge, cnt);
if (q->desc && q->pktcnt_idx != new_idx) {
/* the queue has already been created, update it */
v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
V_FW_PARAMS_PARAM_X(
FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
V_FW_PARAMS_PARAM_YZ(q->cntxt_id);
err = t4_set_params(adap, adap->mbox, adap->pf, 0, 1,
&v, &new_idx);
if (err)
return err;
}
q->pktcnt_idx = new_idx;
}
timer_val = (us == 0) ? X_TIMERREG_RESTART_COUNTER :
closest_timer(&adap->sge, us);
if ((us | cnt) == 0)
q->intr_params = V_QINTR_TIMER_IDX(X_TIMERREG_UPDATE_CIDX);
else
q->intr_params = V_QINTR_TIMER_IDX(timer_val) |
V_QINTR_CNT_EN(cnt > 0);
return 0;
}
static inline bool is_x_1g_port(const struct link_config *lc)
{
return (lc->supported & FW_PORT_CAP_SPEED_1G) != 0;
}
static inline bool is_x_10g_port(const struct link_config *lc)
{
unsigned int speeds, high_speeds;
speeds = V_FW_PORT_CAP_SPEED(G_FW_PORT_CAP_SPEED(lc->supported));
high_speeds = speeds & ~(FW_PORT_CAP_SPEED_100M | FW_PORT_CAP_SPEED_1G);
return high_speeds != 0;
}
inline void init_rspq(struct adapter *adap, struct sge_rspq *q,
unsigned int us, unsigned int cnt,
unsigned int size, unsigned int iqe_size)
{
q->adapter = adap;
cxgb4_set_rspq_intr_params(q, us, cnt);
q->iqe_len = iqe_size;
q->size = size;
}
int cfg_queue_count(struct rte_eth_dev *eth_dev)
{
struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
struct adapter *adap = pi->adapter;
struct sge *s = &adap->sge;
unsigned int max_queues = s->max_ethqsets / adap->params.nports;
if ((eth_dev->data->nb_rx_queues < 1) ||
(eth_dev->data->nb_tx_queues < 1))
return -EINVAL;
if ((eth_dev->data->nb_rx_queues > max_queues) ||
(eth_dev->data->nb_tx_queues > max_queues))
return -EINVAL;
if (eth_dev->data->nb_rx_queues > pi->rss_size)
return -EINVAL;
/* We must configure RSS, since config has changed*/
pi->flags &= ~PORT_RSS_DONE;
pi->n_rx_qsets = eth_dev->data->nb_rx_queues;
pi->n_tx_qsets = eth_dev->data->nb_tx_queues;
return 0;
}
void cfg_queues(struct rte_eth_dev *eth_dev)
{
struct rte_config *config = rte_eal_get_configuration();
struct port_info *pi = (struct port_info *)(eth_dev->data->dev_private);
struct adapter *adap = pi->adapter;
struct sge *s = &adap->sge;
unsigned int i, nb_ports = 0, qidx = 0;
unsigned int q_per_port = 0;
if (!(adap->flags & CFG_QUEUES)) {
for_each_port(adap, i) {
struct port_info *tpi = adap2pinfo(adap, i);
nb_ports += (is_x_10g_port(&tpi->link_cfg)) ||
is_x_1g_port(&tpi->link_cfg) ? 1 : 0;
}
/*
* We default up to # of cores queues per 1G/10G port.
*/
if (nb_ports)
q_per_port = (MAX_ETH_QSETS -
(adap->params.nports - nb_ports)) /
nb_ports;
if (q_per_port > config->lcore_count)
q_per_port = config->lcore_count;
for_each_port(adap, i) {
struct port_info *pi = adap2pinfo(adap, i);
pi->first_qset = qidx;
/* Initially n_rx_qsets == n_tx_qsets */
pi->n_rx_qsets = (is_x_10g_port(&pi->link_cfg) ||
is_x_1g_port(&pi->link_cfg)) ?
q_per_port : 1;
pi->n_tx_qsets = pi->n_rx_qsets;
if (pi->n_rx_qsets > pi->rss_size)
pi->n_rx_qsets = pi->rss_size;
qidx += pi->n_rx_qsets;
}
s->max_ethqsets = qidx;
for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) {
struct sge_eth_rxq *r = &s->ethrxq[i];
init_rspq(adap, &r->rspq, 5, 32, 1024, 64);
r->usembufs = 1;
r->fl.size = (r->usembufs ? 1024 : 72);
}
for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++)
s->ethtxq[i].q.size = 1024;
init_rspq(adap, &adap->sge.fw_evtq, 0, 0, 1024, 64);
adap->flags |= CFG_QUEUES;
}
}
void cxgbe_stats_get(struct port_info *pi, struct port_stats *stats)
{
t4_get_port_stats_offset(pi->adapter, pi->tx_chan, stats,
&pi->stats_base);
}
void cxgbe_stats_reset(struct port_info *pi)
{
t4_clr_port_stats(pi->adapter, pi->tx_chan);
}
static void setup_memwin(struct adapter *adap)
{
u32 mem_win0_base;
/* For T5, only relative offset inside the PCIe BAR is passed */
mem_win0_base = MEMWIN0_BASE;
/*
* Set up memory window for accessing adapter memory ranges. (Read
* back MA register to ensure that changes propagate before we attempt
* to use the new values.)
*/
t4_write_reg(adap,
PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN,
MEMWIN_NIC),
mem_win0_base | V_BIR(0) |
V_WINDOW(ilog2(MEMWIN0_APERTURE) - X_WINDOW_SHIFT));
t4_read_reg(adap,
PCIE_MEM_ACCESS_REG(A_PCIE_MEM_ACCESS_BASE_WIN,
MEMWIN_NIC));
}
static int init_rss(struct adapter *adap)
{
unsigned int i;
int err;
err = t4_init_rss_mode(adap, adap->mbox);
if (err)
return err;
for_each_port(adap, i) {
struct port_info *pi = adap2pinfo(adap, i);
pi->rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0);
if (!pi->rss)
return -ENOMEM;
}
return 0;
}
/**
* Dump basic information about the adapter.
*/
static void print_adapter_info(struct adapter *adap)
{
/**
* Hardware/Firmware/etc. Version/Revision IDs.
*/
t4_dump_version_info(adap);
}
static void print_port_info(struct adapter *adap)
{
int i;
char buf[80];
struct rte_pci_addr *loc = &adap->pdev->addr;
for_each_port(adap, i) {
const struct port_info *pi = &adap->port[i];
char *bufp = buf;
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100M)
bufp += sprintf(bufp, "100M/");
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_1G)
bufp += sprintf(bufp, "1G/");
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_10G)
bufp += sprintf(bufp, "10G/");
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_25G)
bufp += sprintf(bufp, "25G/");
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_40G)
bufp += sprintf(bufp, "40G/");
if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100G)
bufp += sprintf(bufp, "100G/");
if (bufp != buf)
--bufp;
sprintf(bufp, "BASE-%s",
t4_get_port_type_description(
(enum fw_port_type)pi->port_type));
dev_info(adap,
" " PCI_PRI_FMT " Chelsio rev %d %s %s\n",
loc->domain, loc->bus, loc->devid, loc->function,
CHELSIO_CHIP_RELEASE(adap->params.chip), buf,
(adap->flags & USING_MSIX) ? " MSI-X" :
(adap->flags & USING_MSI) ? " MSI" : "");
}
}
static void configure_pcie_ext_tag(struct adapter *adapter)
{
u16 v;
int pos = t4_os_find_pci_capability(adapter, PCI_CAP_ID_EXP);
if (!pos)
return;
if (pos > 0) {
t4_os_pci_read_cfg2(adapter, pos + PCI_EXP_DEVCTL, &v);
v |= PCI_EXP_DEVCTL_EXT_TAG;
t4_os_pci_write_cfg2(adapter, pos + PCI_EXP_DEVCTL, v);
if (is_t6(adapter->params.chip)) {
t4_set_reg_field(adapter, A_PCIE_CFG2,
V_T6_TOTMAXTAG(M_T6_TOTMAXTAG),
V_T6_TOTMAXTAG(7));
t4_set_reg_field(adapter, A_PCIE_CMD_CFG,
V_T6_MINTAG(M_T6_MINTAG),
V_T6_MINTAG(8));
} else {
t4_set_reg_field(adapter, A_PCIE_CFG2,
V_TOTMAXTAG(M_TOTMAXTAG),
V_TOTMAXTAG(3));
t4_set_reg_field(adapter, A_PCIE_CMD_CFG,
V_MINTAG(M_MINTAG),
V_MINTAG(8));
}
}
}
/*
* Tweak configuration based on system architecture, etc. Most of these have
* defaults assigned to them by Firmware Configuration Files (if we're using
* them) but need to be explicitly set if we're using hard-coded
* initialization. So these are essentially common tweaks/settings for
* Configuration Files and hard-coded initialization ...
*/
static int adap_init0_tweaks(struct adapter *adapter)
{
u8 rx_dma_offset;
/*
* Fix up various Host-Dependent Parameters like Page Size, Cache
* Line Size, etc. The firmware default is for a 4KB Page Size and
* 64B Cache Line Size ...
*/
t4_fixup_host_params_compat(adapter, CXGBE_PAGE_SIZE, L1_CACHE_BYTES,
T5_LAST_REV);
/*
* Keep the chip default offset to deliver Ingress packets into our
* DMA buffers to zero
*/
rx_dma_offset = 0;
t4_set_reg_field(adapter, A_SGE_CONTROL, V_PKTSHIFT(M_PKTSHIFT),
V_PKTSHIFT(rx_dma_offset));
t4_set_reg_field(adapter, A_SGE_FLM_CFG,
V_CREDITCNT(M_CREDITCNT) | M_CREDITCNTPACKING,
V_CREDITCNT(3) | V_CREDITCNTPACKING(1));
t4_set_reg_field(adapter, A_SGE_INGRESS_RX_THRESHOLD,
V_THRESHOLD_3(M_THRESHOLD_3), V_THRESHOLD_3(32U));
t4_set_reg_field(adapter, A_SGE_CONTROL2, V_IDMAARBROUNDROBIN(1U),
V_IDMAARBROUNDROBIN(1U));
/*
* Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux
* adds the pseudo header itself.
*/
t4_tp_wr_bits_indirect(adapter, A_TP_INGRESS_CONFIG,
F_CSUM_HAS_PSEUDO_HDR, 0);
return 0;
}
/*
* Attempt to initialize the adapter via a Firmware Configuration File.
*/
static int adap_init0_config(struct adapter *adapter, int reset)
{
struct fw_caps_config_cmd caps_cmd;
unsigned long mtype = 0, maddr = 0;
u32 finiver, finicsum, cfcsum;
int ret;
int config_issued = 0;
int cfg_addr;
char config_name[20];
/*
* Reset device if necessary.
*/
if (reset) {
ret = t4_fw_reset(adapter, adapter->mbox,
F_PIORSTMODE | F_PIORST);
if (ret < 0) {
dev_warn(adapter, "Firmware reset failed, error %d\n",
-ret);
goto bye;
}
}
cfg_addr = t4_flash_cfg_addr(adapter);
if (cfg_addr < 0) {
ret = cfg_addr;
dev_warn(adapter, "Finding address for firmware config file in flash failed, error %d\n",
-ret);
goto bye;
}
strcpy(config_name, "On Flash");
mtype = FW_MEMTYPE_CF_FLASH;
maddr = cfg_addr;
/*
* Issue a Capability Configuration command to the firmware to get it
* to parse the Configuration File. We don't use t4_fw_config_file()
* because we want the ability to modify various features after we've
* processed the configuration file ...
*/
memset(&caps_cmd, 0, sizeof(caps_cmd));
caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
F_FW_CMD_REQUEST | F_FW_CMD_READ);
caps_cmd.cfvalid_to_len16 =
cpu_to_be32(F_FW_CAPS_CONFIG_CMD_CFVALID |
V_FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) |
V_FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) |
FW_LEN16(caps_cmd));
ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
&caps_cmd);
/*
* If the CAPS_CONFIG failed with an ENOENT (for a Firmware
* Configuration File in FLASH), our last gasp effort is to use the
* Firmware Configuration File which is embedded in the firmware. A
* very few early versions of the firmware didn't have one embedded
* but we can ignore those.
*/
if (ret == -ENOENT) {
dev_info(adapter, "%s: Going for embedded config in firmware..\n",
__func__);
memset(&caps_cmd, 0, sizeof(caps_cmd));
caps_cmd.op_to_write =
cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
F_FW_CMD_REQUEST | F_FW_CMD_READ);
caps_cmd.cfvalid_to_len16 = cpu_to_be32(FW_LEN16(caps_cmd));
ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd,
sizeof(caps_cmd), &caps_cmd);
strcpy(config_name, "Firmware Default");
}
config_issued = 1;
if (ret < 0)
goto bye;
finiver = be32_to_cpu(caps_cmd.finiver);
finicsum = be32_to_cpu(caps_cmd.finicsum);
cfcsum = be32_to_cpu(caps_cmd.cfcsum);
if (finicsum != cfcsum)
dev_warn(adapter, "Configuration File checksum mismatch: [fini] csum=%#x, computed csum=%#x\n",
finicsum, cfcsum);
/*
* If we're a pure NIC driver then disable all offloading facilities.
* This will allow the firmware to optimize aspects of the hardware
* configuration which will result in improved performance.
*/
caps_cmd.niccaps &= cpu_to_be16(~(FW_CAPS_CONFIG_NIC_HASHFILTER |
FW_CAPS_CONFIG_NIC_ETHOFLD));
caps_cmd.toecaps = 0;
caps_cmd.iscsicaps = 0;
caps_cmd.rdmacaps = 0;
caps_cmd.fcoecaps = 0;
/*
* And now tell the firmware to use the configuration we just loaded.
*/
caps_cmd.op_to_write = cpu_to_be32(V_FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
F_FW_CMD_REQUEST | F_FW_CMD_WRITE);
caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
NULL);
if (ret < 0) {
dev_warn(adapter, "Unable to finalize Firmware Capabilities %d\n",
-ret);
goto bye;
}
/*
* Tweak configuration based on system architecture, etc.
*/
ret = adap_init0_tweaks(adapter);
if (ret < 0) {
dev_warn(adapter, "Unable to do init0-tweaks %d\n", -ret);
goto bye;
}
/*
* And finally tell the firmware to initialize itself using the
* parameters from the Configuration File.
*/
ret = t4_fw_initialize(adapter, adapter->mbox);
if (ret < 0) {
dev_warn(adapter, "Initializing Firmware failed, error %d\n",
-ret);
goto bye;
}
/*
* Return successfully and note that we're operating with parameters
* not supplied by the driver, rather than from hard-wired
* initialization constants buried in the driver.
*/
dev_info(adapter,
"Successfully configured using Firmware Configuration File \"%s\", version %#x, computed checksum %#x\n",
config_name, finiver, cfcsum);
return 0;
/*
* Something bad happened. Return the error ... (If the "error"
* is that there's no Configuration File on the adapter we don't
* want to issue a warning since this is fairly common.)
*/
bye:
if (config_issued && ret != -ENOENT)
dev_warn(adapter, "\"%s\" configuration file error %d\n",
config_name, -ret);
dev_debug(adapter, "%s: returning ret = %d ..\n", __func__, ret);
return ret;
}
static int adap_init0(struct adapter *adap)
{
int ret = 0;
u32 v, port_vec;
enum dev_state state;
u32 params[7], val[7];
int reset = 1;
int mbox = adap->mbox;
/*
* Contact FW, advertising Master capability.
*/
ret = t4_fw_hello(adap, adap->mbox, adap->mbox, MASTER_MAY, &state);
if (ret < 0) {
dev_err(adap, "%s: could not connect to FW, error %d\n",
__func__, -ret);
goto bye;
}
CXGBE_DEBUG_MBOX(adap, "%s: adap->mbox = %d; ret = %d\n", __func__,
adap->mbox, ret);
if (ret == mbox)
adap->flags |= MASTER_PF;
if (state == DEV_STATE_INIT) {
/*
* Force halt and reset FW because a previous instance may have
* exited abnormally without properly shutting down
*/
ret = t4_fw_halt(adap, adap->mbox, reset);
if (ret < 0) {
dev_err(adap, "Failed to halt. Exit.\n");
goto bye;
}
ret = t4_fw_restart(adap, adap->mbox, reset);
if (ret < 0) {
dev_err(adap, "Failed to restart. Exit.\n");
goto bye;
}
state = (enum dev_state)((unsigned)state & ~DEV_STATE_INIT);
}
t4_get_version_info(adap);
ret = t4_get_core_clock(adap, &adap->params.vpd);
if (ret < 0) {
dev_err(adap, "%s: could not get core clock, error %d\n",
__func__, -ret);
goto bye;
}
/*
* If the firmware is initialized already (and we're not forcing a
* master initialization), note that we're living with existing
* adapter parameters. Otherwise, it's time to try initializing the
* adapter ...
*/
if (state == DEV_STATE_INIT) {
dev_info(adap, "Coming up as %s: Adapter already initialized\n",
adap->flags & MASTER_PF ? "MASTER" : "SLAVE");
} else {
dev_info(adap, "Coming up as MASTER: Initializing adapter\n");
ret = adap_init0_config(adap, reset);
if (ret == -ENOENT) {
dev_err(adap,
"No Configuration File present on adapter. Using hard-wired configuration parameters.\n");
goto bye;
}
}
if (ret < 0) {
dev_err(adap, "could not initialize adapter, error %d\n", -ret);
goto bye;
}
/* Find out what ports are available to us. */
v = V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_PORTVEC);
ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &v, &port_vec);
if (ret < 0) {
dev_err(adap, "%s: failure in t4_query_params; error = %d\n",
__func__, ret);
goto bye;
}
adap->params.nports = hweight32(port_vec);
adap->params.portvec = port_vec;
dev_debug(adap, "%s: adap->params.nports = %u\n", __func__,
adap->params.nports);
/*
* Give the SGE code a chance to pull in anything that it needs ...
* Note that this must be called after we retrieve our VPD parameters
* in order to know how to convert core ticks to seconds, etc.
*/
ret = t4_sge_init(adap);
if (ret < 0) {
dev_err(adap, "t4_sge_init failed with error %d\n",
-ret);
goto bye;
}
/*
* Grab some of our basic fundamental operating parameters.
*/
#define FW_PARAM_DEV(param) \
(V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
#define FW_PARAM_PFVF(param) \
(V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param) | \
V_FW_PARAMS_PARAM_Y(0) | \
V_FW_PARAMS_PARAM_Z(0))
/* If we're running on newer firmware, let it know that we're
* prepared to deal with encapsulated CPL messages. Older
* firmware won't understand this and we'll just get
* unencapsulated messages ...
*/
params[0] = FW_PARAM_PFVF(CPLFW4MSG_ENCAP);
val[0] = 1;
(void)t4_set_params(adap, adap->mbox, adap->pf, 0, 1, params, val);
/*
* Find out whether we're allowed to use the T5+ ULPTX MEMWRITE DSGL
* capability. Earlier versions of the firmware didn't have the
* ULPTX_MEMWRITE_DSGL so we'll interpret a query failure as no
* permission to use ULPTX MEMWRITE DSGL.
*/
if (is_t4(adap->params.chip)) {
adap->params.ulptx_memwrite_dsgl = false;
} else {
params[0] = FW_PARAM_DEV(ULPTX_MEMWRITE_DSGL);
ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
1, params, val);
adap->params.ulptx_memwrite_dsgl = (ret == 0 && val[0] != 0);
}
/*
* The MTU/MSS Table is initialized by now, so load their values. If
* we're initializing the adapter, then we'll make any modifications
* we want to the MTU/MSS Table and also initialize the congestion
* parameters.
*/
t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
if (state != DEV_STATE_INIT) {
int i;
/*
* The default MTU Table contains values 1492 and 1500.
* However, for TCP, it's better to have two values which are
* a multiple of 8 +/- 4 bytes apart near this popular MTU.
* This allows us to have a TCP Data Payload which is a
* multiple of 8 regardless of what combination of TCP Options
* are in use (always a multiple of 4 bytes) which is
* important for performance reasons. For instance, if no
* options are in use, then we have a 20-byte IP header and a
* 20-byte TCP header. In this case, a 1500-byte MSS would
* result in a TCP Data Payload of 1500 - 40 == 1460 bytes
* which is not a multiple of 8. So using an MSS of 1488 in
* this case results in a TCP Data Payload of 1448 bytes which
* is a multiple of 8. On the other hand, if 12-byte TCP Time
* Stamps have been negotiated, then an MTU of 1500 bytes
* results in a TCP Data Payload of 1448 bytes which, as
* above, is a multiple of 8 bytes ...
*/
for (i = 0; i < NMTUS; i++)
if (adap->params.mtus[i] == 1492) {
adap->params.mtus[i] = 1488;
break;
}
t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
adap->params.b_wnd);
}
t4_init_sge_params(adap);
t4_init_tp_params(adap);
configure_pcie_ext_tag(adap);
adap->params.drv_memwin = MEMWIN_NIC;
adap->flags |= FW_OK;
dev_debug(adap, "%s: returning zero..\n", __func__);
return 0;
/*
* Something bad happened. If a command timed out or failed with EIO
* FW does not operate within its spec or something catastrophic
* happened to HW/FW, stop issuing commands.
*/
bye:
if (ret != -ETIMEDOUT && ret != -EIO)
t4_fw_bye(adap, adap->mbox);
return ret;
}
/**
* t4_os_portmod_changed - handle port module changes
* @adap: the adapter associated with the module change
* @port_id: the port index whose module status has changed
*
* This is the OS-dependent handler for port module changes. It is
* invoked when a port module is removed or inserted for any OS-specific
* processing.
*/
void t4_os_portmod_changed(const struct adapter *adap, int port_id)
{
static const char * const mod_str[] = {
NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
};
const struct port_info *pi = &adap->port[port_id];
if (pi->mod_type == FW_PORT_MOD_TYPE_NONE)
dev_info(adap, "Port%d: port module unplugged\n", pi->port_id);
else if (pi->mod_type < ARRAY_SIZE(mod_str))
dev_info(adap, "Port%d: %s port module inserted\n", pi->port_id,
mod_str[pi->mod_type]);
else if (pi->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED)
dev_info(adap, "Port%d: unsupported port module inserted\n",
pi->port_id);
else if (pi->mod_type == FW_PORT_MOD_TYPE_UNKNOWN)
dev_info(adap, "Port%d: unknown port module inserted\n",
pi->port_id);
else if (pi->mod_type == FW_PORT_MOD_TYPE_ERROR)
dev_info(adap, "Port%d: transceiver module error\n",
pi->port_id);
else
dev_info(adap, "Port%d: unknown module type %d inserted\n",
pi->port_id, pi->mod_type);
}
/**
* link_start - enable a port
* @dev: the port to enable
*
* Performs the MAC and PHY actions needed to enable a port.
*/
int link_start(struct port_info *pi)
{
struct adapter *adapter = pi->adapter;
int ret;
unsigned int mtu;
mtu = pi->eth_dev->data->dev_conf.rxmode.max_rx_pkt_len -
(ETHER_HDR_LEN + ETHER_CRC_LEN);
/*
* We do not set address filters and promiscuity here, the stack does
* that step explicitly.
*/
ret = t4_set_rxmode(adapter, adapter->mbox, pi->viid, mtu, -1, -1,
-1, 1, true);
if (ret == 0) {
ret = t4_change_mac(adapter, adapter->mbox, pi->viid,
pi->xact_addr_filt,
(u8 *)&pi->eth_dev->data->mac_addrs[0],
true, true);
if (ret >= 0) {
pi->xact_addr_filt = ret;
ret = 0;
}
}
if (ret == 0)
ret = t4_link_l1cfg(adapter, adapter->mbox, pi->tx_chan,
&pi->link_cfg);
if (ret == 0) {
/*
* Enabling a Virtual Interface can result in an interrupt
* during the processing of the VI Enable command and, in some
* paths, result in an attempt to issue another command in the
* interrupt context. Thus, we disable interrupts during the
* course of the VI Enable command ...
*/
ret = t4_enable_vi_params(adapter, adapter->mbox, pi->viid,
true, true, false);
}
return ret;
}
/**
* cxgb4_write_rss - write the RSS table for a given port
* @pi: the port
* @queues: array of queue indices for RSS
*
* Sets up the portion of the HW RSS table for the port's VI to distribute
* packets to the Rx queues in @queues.
*/
int cxgb4_write_rss(const struct port_info *pi, const u16 *queues)
{
u16 *rss;
int i, err;
struct adapter *adapter = pi->adapter;
const struct sge_eth_rxq *rxq;
/* Should never be called before setting up sge eth rx queues */
BUG_ON(!(adapter->flags & FULL_INIT_DONE));
rxq = &adapter->sge.ethrxq[pi->first_qset];
rss = rte_zmalloc(NULL, pi->rss_size * sizeof(u16), 0);
if (!rss)
return -ENOMEM;
/* map the queue indices to queue ids */
for (i = 0; i < pi->rss_size; i++, queues++)
rss[i] = rxq[*queues].rspq.abs_id;
err = t4_config_rss_range(adapter, adapter->pf, pi->viid, 0,
pi->rss_size, rss, pi->rss_size);
/*
* If Tunnel All Lookup isn't specified in the global RSS
* Configuration, then we need to specify a default Ingress
* Queue for any ingress packets which aren't hashed. We'll
* use our first ingress queue ...
*/
if (!err)
err = t4_config_vi_rss(adapter, adapter->mbox, pi->viid,
F_FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN |
F_FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN |
F_FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN |
F_FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN |
F_FW_RSS_VI_CONFIG_CMD_UDPEN,
rss[0]);
rte_free(rss);
return err;
}
/**
* setup_rss - configure RSS
* @adapter: the adapter
*
* Sets up RSS to distribute packets to multiple receive queues. We
* configure the RSS CPU lookup table to distribute to the number of HW
* receive queues, and the response queue lookup table to narrow that
* down to the response queues actually configured for each port.
* We always configure the RSS mapping for all ports since the mapping
* table has plenty of entries.
*/
int setup_rss(struct port_info *pi)
{
int j, err;
struct adapter *adapter = pi->adapter;
dev_debug(adapter, "%s: pi->rss_size = %u; pi->n_rx_qsets = %u\n",
__func__, pi->rss_size, pi->n_rx_qsets);
if (!(pi->flags & PORT_RSS_DONE)) {
if (adapter->flags & FULL_INIT_DONE) {
/* Fill default values with equal distribution */
for (j = 0; j < pi->rss_size; j++)
pi->rss[j] = j % pi->n_rx_qsets;
err = cxgb4_write_rss(pi, pi->rss);
if (err)
return err;
pi->flags |= PORT_RSS_DONE;
}
}
return 0;
}
/*
* Enable NAPI scheduling and interrupt generation for all Rx queues.
*/
static void enable_rx(struct adapter *adap, struct sge_rspq *q)
{
/* 0-increment GTS to start the timer and enable interrupts */
t4_write_reg(adap, MYPF_REG(A_SGE_PF_GTS),
V_SEINTARM(q->intr_params) |
V_INGRESSQID(q->cntxt_id));
}
void cxgbe_enable_rx_queues(struct port_info *pi)
{
struct adapter *adap = pi->adapter;
struct sge *s = &adap->sge;
unsigned int i;
for (i = 0; i < pi->n_rx_qsets; i++)
enable_rx(adap, &s->ethrxq[pi->first_qset + i].rspq);
}
/**
* fw_caps_to_speed_caps - translate Firmware Port Caps to Speed Caps.
* @port_type: Firmware Port Type
* @fw_caps: Firmware Port Capabilities
* @speed_caps: Device Info Speed Capabilities
*
* Translate a Firmware Port Capabilities specification to Device Info
* Speed Capabilities.
*/
static void fw_caps_to_speed_caps(enum fw_port_type port_type,
unsigned int fw_caps,
u32 *speed_caps)
{
#define SET_SPEED(__speed_name) \
do { \
*speed_caps |= ETH_LINK_ ## __speed_name; \
} while (0)
#define FW_CAPS_TO_SPEED(__fw_name) \
do { \
if (fw_caps & FW_PORT_CAP_ ## __fw_name) \
SET_SPEED(__fw_name); \
} while (0)
switch (port_type) {
case FW_PORT_TYPE_BT_SGMII:
case FW_PORT_TYPE_BT_XFI:
case FW_PORT_TYPE_BT_XAUI:
FW_CAPS_TO_SPEED(SPEED_100M);
FW_CAPS_TO_SPEED(SPEED_1G);
FW_CAPS_TO_SPEED(SPEED_10G);
break;
case FW_PORT_TYPE_KX4:
case FW_PORT_TYPE_KX:
case FW_PORT_TYPE_FIBER_XFI:
case FW_PORT_TYPE_FIBER_XAUI:
case FW_PORT_TYPE_SFP:
case FW_PORT_TYPE_QSFP_10G:
case FW_PORT_TYPE_QSA:
FW_CAPS_TO_SPEED(SPEED_1G);
FW_CAPS_TO_SPEED(SPEED_10G);
break;
case FW_PORT_TYPE_KR:
SET_SPEED(SPEED_10G);
break;
case FW_PORT_TYPE_BP_AP:
case FW_PORT_TYPE_BP4_AP:
SET_SPEED(SPEED_1G);
SET_SPEED(SPEED_10G);
break;
case FW_PORT_TYPE_BP40_BA:
case FW_PORT_TYPE_QSFP:
SET_SPEED(SPEED_40G);
break;
case FW_PORT_TYPE_CR_QSFP:
case FW_PORT_TYPE_SFP28:
case FW_PORT_TYPE_KR_SFP28:
FW_CAPS_TO_SPEED(SPEED_1G);
FW_CAPS_TO_SPEED(SPEED_10G);
FW_CAPS_TO_SPEED(SPEED_25G);
break;
case FW_PORT_TYPE_CR2_QSFP:
SET_SPEED(SPEED_50G);
break;
case FW_PORT_TYPE_KR4_100G:
case FW_PORT_TYPE_CR4_QSFP:
FW_CAPS_TO_SPEED(SPEED_25G);
FW_CAPS_TO_SPEED(SPEED_40G);
FW_CAPS_TO_SPEED(SPEED_100G);
break;
default:
break;
}
#undef FW_CAPS_TO_SPEED
#undef SET_SPEED
}
/**
* cxgbe_get_speed_caps - Fetch supported speed capabilities
* @pi: Underlying port's info
* @speed_caps: Device Info speed capabilities
*
* Fetch supported speed capabilities of the underlying port.
*/
void cxgbe_get_speed_caps(struct port_info *pi, u32 *speed_caps)
{
*speed_caps = 0;
fw_caps_to_speed_caps(pi->port_type, pi->link_cfg.supported,
speed_caps);
if (!(pi->link_cfg.supported & FW_PORT_CAP_ANEG))
*speed_caps |= ETH_LINK_SPEED_FIXED;
}
/**
* cxgb_up - enable the adapter
* @adap: adapter being enabled
*
* Called when the first port is enabled, this function performs the
* actions necessary to make an adapter operational, such as completing
* the initialization of HW modules, and enabling interrupts.
*/
int cxgbe_up(struct adapter *adap)
{
enable_rx(adap, &adap->sge.fw_evtq);
t4_sge_tx_monitor_start(adap);
t4_intr_enable(adap);
adap->flags |= FULL_INIT_DONE;
/* TODO: deadman watchdog ?? */
return 0;
}
/*
* Close the port
*/
int cxgbe_down(struct port_info *pi)
{
struct adapter *adapter = pi->adapter;
int err = 0;
err = t4_enable_vi(adapter, adapter->mbox, pi->viid, false, false);
if (err) {
dev_err(adapter, "%s: disable_vi failed: %d\n", __func__, err);
return err;
}
t4_reset_link_config(adapter, pi->port_id);
return 0;
}
/*
* Release resources when all the ports have been stopped.
*/
void cxgbe_close(struct adapter *adapter)
{
struct port_info *pi;
int i;
if (adapter->flags & FULL_INIT_DONE) {
t4_intr_disable(adapter);
t4_sge_tx_monitor_stop(adapter);
t4_free_sge_resources(adapter);
for_each_port(adapter, i) {
pi = adap2pinfo(adapter, i);
if (pi->viid != 0)
t4_free_vi(adapter, adapter->mbox,
adapter->pf, 0, pi->viid);
rte_free(pi->eth_dev->data->mac_addrs);
}
adapter->flags &= ~FULL_INIT_DONE;
}
if (adapter->flags & FW_OK)
t4_fw_bye(adapter, adapter->mbox);
}
int cxgbe_probe(struct adapter *adapter)
{
struct port_info *pi;
int chip;
int func, i;
int err = 0;
u32 whoami;
whoami = t4_read_reg(adapter, A_PL_WHOAMI);
chip = t4_get_chip_type(adapter,
CHELSIO_PCI_ID_VER(adapter->pdev->id.device_id));
if (chip < 0)
return chip;
func = CHELSIO_CHIP_VERSION(chip) <= CHELSIO_T5 ?
G_SOURCEPF(whoami) : G_T6_SOURCEPF(whoami);
adapter->mbox = func;
adapter->pf = func;
t4_os_lock_init(&adapter->mbox_lock);
TAILQ_INIT(&adapter->mbox_list);
err = t4_prep_adapter(adapter);
if (err)
return err;
setup_memwin(adapter);
err = adap_init0(adapter);
if (err) {
dev_err(adapter, "%s: Adapter initialization failed, error %d\n",
__func__, err);
goto out_free;
}
if (!is_t4(adapter->params.chip)) {
/*
* The userspace doorbell BAR is split evenly into doorbell
* regions, each associated with an egress queue. If this
* per-queue region is large enough (at least UDBS_SEG_SIZE)
* then it can be used to submit a tx work request with an
* implied doorbell. Enable write combining on the BAR if
* there is room for such work requests.
*/
int s_qpp, qpp, num_seg;
s_qpp = (S_QUEUESPERPAGEPF0 +
(S_QUEUESPERPAGEPF1 - S_QUEUESPERPAGEPF0) *
adapter->pf);
qpp = 1 << ((t4_read_reg(adapter,
A_SGE_EGRESS_QUEUES_PER_PAGE_PF) >> s_qpp)
& M_QUEUESPERPAGEPF0);
num_seg = CXGBE_PAGE_SIZE / UDBS_SEG_SIZE;
if (qpp > num_seg)
dev_warn(adapter, "Incorrect SGE EGRESS QUEUES_PER_PAGE configuration, continuing in debug mode\n");
adapter->bar2 = (void *)adapter->pdev->mem_resource[2].addr;
if (!adapter->bar2) {
dev_err(adapter, "cannot map device bar2 region\n");
err = -ENOMEM;
goto out_free;
}
t4_write_reg(adapter, A_SGE_STAT_CFG, V_STATSOURCE_T5(7) |
V_STATMODE(0));
}
for_each_port(adapter, i) {
char name[RTE_ETH_NAME_MAX_LEN];
struct rte_eth_dev_data *data = NULL;
const unsigned int numa_node = rte_socket_id();
pi = &adapter->port[i];
pi->adapter = adapter;
pi->xact_addr_filt = -1;
pi->port_id = i;
snprintf(name, sizeof(name), "cxgbe%d",
adapter->eth_dev->data->port_id + i);
if (i == 0) {
/* First port is already allocated by DPDK */
pi->eth_dev = adapter->eth_dev;
goto allocate_mac;
}
/*
* now do all data allocation - for eth_dev structure,
* and internal (private) data for the remaining ports
*/
/* reserve an ethdev entry */
pi->eth_dev = rte_eth_dev_allocate(name);
if (!pi->eth_dev)
goto out_free;
data = rte_zmalloc_socket(name, sizeof(*data), 0, numa_node);
if (!data)
goto out_free;
data->port_id = adapter->eth_dev->data->port_id + i;
pi->eth_dev->data = data;
allocate_mac:
pi->eth_dev->device = &adapter->pdev->device;
pi->eth_dev->data->dev_private = pi;
pi->eth_dev->dev_ops = adapter->eth_dev->dev_ops;
pi->eth_dev->tx_pkt_burst = adapter->eth_dev->tx_pkt_burst;
pi->eth_dev->rx_pkt_burst = adapter->eth_dev->rx_pkt_burst;
rte_eth_copy_pci_info(pi->eth_dev, adapter->pdev);
pi->eth_dev->data->mac_addrs = rte_zmalloc(name,
ETHER_ADDR_LEN, 0);
if (!pi->eth_dev->data->mac_addrs) {
dev_err(adapter, "%s: Mem allocation failed for storing mac addr, aborting\n",
__func__);
err = -1;
goto out_free;
}
}
if (adapter->flags & FW_OK) {
err = t4_port_init(adapter, adapter->mbox, adapter->pf, 0);
if (err) {
dev_err(adapter, "%s: t4_port_init failed with err %d\n",
__func__, err);
goto out_free;
}
}
cfg_queues(adapter->eth_dev);
print_adapter_info(adapter);
print_port_info(adapter);
err = init_rss(adapter);
if (err)
goto out_free;
return 0;
out_free:
for_each_port(adapter, i) {
pi = adap2pinfo(adapter, i);
if (pi->viid != 0)
t4_free_vi(adapter, adapter->mbox, adapter->pf,
0, pi->viid);
/* Skip first port since it'll be de-allocated by DPDK */
if (i == 0)
continue;
if (pi->eth_dev->data)
rte_free(pi->eth_dev->data);
}
if (adapter->flags & FW_OK)
t4_fw_bye(adapter, adapter->mbox);
return -err;
}
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