numam-dpdk/drivers/bus/ifpga/ifpga_bus.c
David Marchand eeded2044a log: register with standardized names
Let's try to enforce the convention where most drivers use a pmd. logtype
with their class reflected in it, and libraries use a lib. logtype.

Introduce two new macros:
- RTE_LOG_REGISTER_DEFAULT can be used when a single logtype is
  used in a component. It is associated to the default name provided
  by the build system,
- RTE_LOG_REGISTER_SUFFIX can be used when multiple logtypes are used,
  and then the passed name is appended to the default name,

RTE_LOG_REGISTER is left untouched for existing external users
and for components that do not comply with the convention.

There is a new Meson variable log_prefix to adapt the default name
for baseband (pmd.bb.), bus (no pmd.) and mempool (no pmd.) classes.

Note: achieved with below commands + reverted change on net/bonding +
edits on crypto/virtio, compress/mlx5, regex/mlx5

$ git grep -l RTE_LOG_REGISTER drivers/ |
  while read file; do
    pattern=${file##drivers/};
    class=${pattern%%/*};
    pattern=${pattern#$class/};
    drv=${pattern%%/*};
    case "$class" in
      baseband) pattern=pmd.bb.$drv;;
      bus) pattern=bus.$drv;;
      mempool) pattern=mempool.$drv;;
      *) pattern=pmd.$class.$drv;;
    esac
    sed -i -e 's/RTE_LOG_REGISTER(\(.*\), '$pattern',/RTE_LOG_REGISTER_DEFAULT(\1,/' $file;
    sed -i -e 's/RTE_LOG_REGISTER(\(.*\), '$pattern'\.\(.*\),/RTE_LOG_REGISTER_SUFFIX(\1, \2,/' $file;
  done

$ git grep -l RTE_LOG_REGISTER lib/ |
  while read file; do
    pattern=${file##lib/};
    pattern=lib.${pattern%%/*};
    sed -i -e 's/RTE_LOG_REGISTER(\(.*\), '$pattern',/RTE_LOG_REGISTER_DEFAULT(\1,/' $file;
    sed -i -e 's/RTE_LOG_REGISTER(\(.*\), '$pattern'\.\(.*\),/RTE_LOG_REGISTER_SUFFIX(\1, \2,/' $file;
  done

Signed-off-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>
2021-05-11 15:17:55 +02:00

476 lines
10 KiB
C

/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2018 Intel Corporation
*/
#include <string.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/queue.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <rte_errno.h>
#include <rte_bus.h>
#include <rte_per_lcore.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_eal.h>
#include <rte_common.h>
#include <rte_devargs.h>
#include <rte_kvargs.h>
#include <rte_alarm.h>
#include <rte_string_fns.h>
#include <rte_debug.h>
#include "rte_rawdev.h"
#include "rte_rawdev_pmd.h"
#include "rte_bus_ifpga.h"
#include "ifpga_logs.h"
#include "ifpga_common.h"
/* Forward declaration to access Intel FPGA bus
* on which iFPGA devices are connected
*/
static struct rte_bus rte_ifpga_bus;
static struct ifpga_afu_dev_list ifpga_afu_dev_list =
TAILQ_HEAD_INITIALIZER(ifpga_afu_dev_list);
static struct ifpga_afu_drv_list ifpga_afu_drv_list =
TAILQ_HEAD_INITIALIZER(ifpga_afu_drv_list);
/* register a ifpga bus based driver */
void rte_ifpga_driver_register(struct rte_afu_driver *driver)
{
RTE_VERIFY(driver);
TAILQ_INSERT_TAIL(&ifpga_afu_drv_list, driver, next);
}
/* un-register a fpga bus based driver */
void rte_ifpga_driver_unregister(struct rte_afu_driver *driver)
{
TAILQ_REMOVE(&ifpga_afu_drv_list, driver, next);
}
static struct rte_afu_device *
ifpga_find_afu_dev(const struct rte_rawdev *rdev,
const struct rte_afu_id *afu_id)
{
struct rte_afu_device *afu_dev = NULL;
TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
if (afu_dev &&
afu_dev->rawdev == rdev &&
!ifpga_afu_id_cmp(&afu_dev->id, afu_id))
return afu_dev;
}
return NULL;
}
struct rte_afu_device *
rte_ifpga_find_afu_by_name(const char *name)
{
struct rte_afu_device *afu_dev = NULL;
TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
if (afu_dev &&
!strcmp(afu_dev->device.name, name))
return afu_dev;
}
return NULL;
}
static const char * const valid_args[] = {
#define IFPGA_ARG_NAME "ifpga"
IFPGA_ARG_NAME,
#define IFPGA_ARG_PORT "port"
IFPGA_ARG_PORT,
#define IFPGA_AFU_BTS "afu_bts"
IFPGA_AFU_BTS,
NULL
};
/*
* Scan the content of the FPGA bus, and the devices in the devices
* list
*/
static struct rte_afu_device *
ifpga_scan_one(struct rte_rawdev *rawdev,
struct rte_devargs *devargs)
{
struct rte_kvargs *kvlist = NULL;
struct rte_afu_device *afu_dev = NULL;
struct rte_afu_pr_conf afu_pr_conf;
int ret = 0;
char *path = NULL;
memset(&afu_pr_conf, 0, sizeof(struct rte_afu_pr_conf));
kvlist = rte_kvargs_parse(devargs->args, valid_args);
if (!kvlist) {
IFPGA_BUS_ERR("error when parsing param");
goto end;
}
if (rte_kvargs_count(kvlist, IFPGA_ARG_PORT) == 1) {
if (rte_kvargs_process(kvlist, IFPGA_ARG_PORT,
&rte_ifpga_get_integer32_arg, &afu_pr_conf.afu_id.port) < 0) {
IFPGA_BUS_ERR("error to parse %s",
IFPGA_ARG_PORT);
goto end;
}
} else {
IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
IFPGA_ARG_PORT);
goto end;
}
if (rte_kvargs_count(kvlist, IFPGA_AFU_BTS) == 1) {
if (rte_kvargs_process(kvlist, IFPGA_AFU_BTS,
&rte_ifpga_get_string_arg, &path) < 0) {
IFPGA_BUS_ERR("Failed to parse %s",
IFPGA_AFU_BTS);
goto end;
}
afu_pr_conf.pr_enable = 1;
} else {
afu_pr_conf.pr_enable = 0;
}
afu_pr_conf.afu_id.uuid.uuid_low = 0;
afu_pr_conf.afu_id.uuid.uuid_high = 0;
if (ifpga_find_afu_dev(rawdev, &afu_pr_conf.afu_id))
goto end;
afu_dev = calloc(1, sizeof(*afu_dev));
if (!afu_dev)
goto end;
afu_dev->device.bus = &rte_ifpga_bus;
afu_dev->device.devargs = devargs;
afu_dev->device.numa_node = SOCKET_ID_ANY;
afu_dev->device.name = devargs->name;
afu_dev->rawdev = rawdev;
afu_dev->id.uuid.uuid_low = 0;
afu_dev->id.uuid.uuid_high = 0;
afu_dev->id.port = afu_pr_conf.afu_id.port;
if (rawdev->dev_ops && rawdev->dev_ops->dev_info_get)
rawdev->dev_ops->dev_info_get(rawdev, afu_dev, sizeof(*afu_dev));
if (rawdev->dev_ops &&
rawdev->dev_ops->dev_start &&
rawdev->dev_ops->dev_start(rawdev))
goto end;
strlcpy(afu_pr_conf.bs_path, path, sizeof(afu_pr_conf.bs_path));
if (rawdev->dev_ops &&
rawdev->dev_ops->firmware_load &&
rawdev->dev_ops->firmware_load(rawdev,
&afu_pr_conf)){
IFPGA_BUS_ERR("firmware load error %d\n", ret);
goto end;
}
afu_dev->id.uuid.uuid_low = afu_pr_conf.afu_id.uuid.uuid_low;
afu_dev->id.uuid.uuid_high = afu_pr_conf.afu_id.uuid.uuid_high;
rte_kvargs_free(kvlist);
free(path);
return afu_dev;
end:
if (kvlist)
rte_kvargs_free(kvlist);
if (path)
free(path);
if (afu_dev)
free(afu_dev);
return NULL;
}
/*
* Scan the content of the FPGA bus, and the devices in the devices
* list
*/
static int
ifpga_scan(void)
{
struct rte_devargs *devargs;
struct rte_kvargs *kvlist = NULL;
struct rte_rawdev *rawdev = NULL;
char *name = NULL;
char name1[RTE_RAWDEV_NAME_MAX_LEN];
struct rte_afu_device *afu_dev = NULL;
/* for FPGA devices we scan the devargs_list populated via cmdline */
RTE_EAL_DEVARGS_FOREACH(IFPGA_ARG_NAME, devargs) {
if (devargs->bus != &rte_ifpga_bus)
continue;
kvlist = rte_kvargs_parse(devargs->args, valid_args);
if (!kvlist) {
IFPGA_BUS_ERR("error when parsing param");
goto end;
}
if (rte_kvargs_count(kvlist, IFPGA_ARG_NAME) == 1) {
if (rte_kvargs_process(kvlist, IFPGA_ARG_NAME,
&rte_ifpga_get_string_arg, &name) < 0) {
IFPGA_BUS_ERR("error to parse %s",
IFPGA_ARG_NAME);
goto end;
}
} else {
IFPGA_BUS_ERR("arg %s is mandatory for ifpga bus",
IFPGA_ARG_NAME);
goto end;
}
memset(name1, 0, sizeof(name1));
snprintf(name1, RTE_RAWDEV_NAME_MAX_LEN, "IFPGA:%s", name);
rawdev = rte_rawdev_pmd_get_named_dev(name1);
if (!rawdev)
goto end;
afu_dev = ifpga_scan_one(rawdev, devargs);
if (afu_dev != NULL)
TAILQ_INSERT_TAIL(&ifpga_afu_dev_list, afu_dev, next);
}
end:
if (kvlist)
rte_kvargs_free(kvlist);
if (name)
free(name);
return 0;
}
/*
* Match the AFU Driver and AFU Device using the ID Table
*/
static int
rte_afu_match(const struct rte_afu_driver *afu_drv,
const struct rte_afu_device *afu_dev)
{
const struct rte_afu_uuid *id_table;
for (id_table = afu_drv->id_table;
((id_table->uuid_low != 0) && (id_table->uuid_high != 0));
id_table++) {
/* check if device's identifiers match the driver's ones */
if ((id_table->uuid_low != afu_dev->id.uuid.uuid_low) ||
id_table->uuid_high !=
afu_dev->id.uuid.uuid_high)
continue;
return 1;
}
return 0;
}
static int
ifpga_probe_one_driver(struct rte_afu_driver *drv,
struct rte_afu_device *afu_dev)
{
int ret;
if (!rte_afu_match(drv, afu_dev))
/* Match of device and driver failed */
return 1;
/* reference driver structure */
afu_dev->driver = drv;
/* call the driver probe() function */
ret = drv->probe(afu_dev);
if (ret)
afu_dev->driver = NULL;
else
afu_dev->device.driver = &drv->driver;
return ret;
}
static int
ifpga_probe_all_drivers(struct rte_afu_device *afu_dev)
{
struct rte_afu_driver *drv = NULL;
int ret = 0;
if (afu_dev == NULL)
return -1;
/* Check if a driver is already loaded */
if (rte_dev_is_probed(&afu_dev->device)) {
IFPGA_BUS_DEBUG("Device %s is already probed\n",
rte_ifpga_device_name(afu_dev));
return -EEXIST;
}
TAILQ_FOREACH(drv, &ifpga_afu_drv_list, next) {
ret = ifpga_probe_one_driver(drv, afu_dev);
if (ret < 0)
/* negative value is an error */
return ret;
if (ret > 0)
/* positive value means driver doesn't support it */
continue;
return 0;
}
if ((ret > 0) && (afu_dev->driver == NULL))
return 0;
else
return ret;
}
/*
* Scan the content of the Intel FPGA bus, and call the probe() function for
* all registered drivers that have a matching entry in its id_table
* for discovered devices.
*/
static int
ifpga_probe(void)
{
struct rte_afu_device *afu_dev = NULL;
int ret = 0;
TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
ret = ifpga_probe_all_drivers(afu_dev);
if (ret == -EEXIST)
continue;
if (ret < 0)
IFPGA_BUS_ERR("failed to initialize %s device\n",
rte_ifpga_device_name(afu_dev));
}
return ret;
}
static int
ifpga_plug(struct rte_device *dev)
{
return ifpga_probe_all_drivers(RTE_DEV_TO_AFU(dev));
}
static int
ifpga_remove_driver(struct rte_afu_device *afu_dev)
{
const char *name;
name = rte_ifpga_device_name(afu_dev);
if (afu_dev->driver == NULL) {
IFPGA_BUS_DEBUG("no driver attach to device %s\n", name);
return 1;
}
return afu_dev->driver->remove(afu_dev);
}
static int
ifpga_unplug(struct rte_device *dev)
{
struct rte_afu_device *afu_dev = NULL;
int ret;
if (dev == NULL)
return -EINVAL;
afu_dev = RTE_DEV_TO_AFU(dev);
if (!afu_dev)
return -ENOENT;
ret = ifpga_remove_driver(afu_dev);
if (ret)
return ret;
TAILQ_REMOVE(&ifpga_afu_dev_list, afu_dev, next);
rte_devargs_remove(dev->devargs);
free(afu_dev);
return 0;
}
static struct rte_device *
ifpga_find_device(const struct rte_device *start,
rte_dev_cmp_t cmp, const void *data)
{
struct rte_afu_device *afu_dev;
TAILQ_FOREACH(afu_dev, &ifpga_afu_dev_list, next) {
if (start && &afu_dev->device == start) {
start = NULL;
continue;
}
if (cmp(&afu_dev->device, data) == 0)
return &afu_dev->device;
}
return NULL;
}
static int
ifpga_parse(const char *name, void *addr)
{
int *out = addr;
struct rte_rawdev *rawdev = NULL;
char rawdev_name[RTE_RAWDEV_NAME_MAX_LEN];
char *c1 = NULL;
char *c2 = NULL;
int port = IFPGA_BUS_DEV_PORT_MAX;
char str_port[8];
int str_port_len = 0;
int ret;
memset(str_port, 0, 8);
c1 = strchr(name, '|');
if (c1 != NULL) {
str_port_len = c1 - name;
c2 = c1 + 1;
}
if (str_port_len < 8 &&
str_port_len > 0) {
memcpy(str_port, name, str_port_len);
ret = sscanf(str_port, "%d", &port);
if (ret == -1)
return 0;
}
memset(rawdev_name, 0, sizeof(rawdev_name));
snprintf(rawdev_name, RTE_RAWDEV_NAME_MAX_LEN, "IFPGA:%s", c2);
rawdev = rte_rawdev_pmd_get_named_dev(rawdev_name);
if ((port < IFPGA_BUS_DEV_PORT_MAX) &&
rawdev &&
(addr != NULL))
*out = port;
if ((port < IFPGA_BUS_DEV_PORT_MAX) &&
rawdev)
return 0;
else
return 1;
}
static struct rte_bus rte_ifpga_bus = {
.scan = ifpga_scan,
.probe = ifpga_probe,
.find_device = ifpga_find_device,
.plug = ifpga_plug,
.unplug = ifpga_unplug,
.parse = ifpga_parse,
};
RTE_REGISTER_BUS(IFPGA_BUS_NAME, rte_ifpga_bus);
RTE_LOG_REGISTER_DEFAULT(ifpga_bus_logtype, NOTICE);