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authorHemant Agrawal <hemant.agrawal@nxp.com>2018-04-25 18:26:59 +0530
committerThomas Monjalon <thomas@monjalon.net>2018-05-14 00:35:47 +0200
commit50245be05d1af2db808b41a0470448e39e2cb727 (patch)
treec437b005ff13ff3d476298f7c222285162928098 /drivers/bus/fslmc
parent6e0752205bb2df36e51d2411263a89a868e2f53f (diff)
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bus/fslmc: support device blacklisting
Signed-off-by: Hemant Agrawal <hemant.agrawal@nxp.com> Acked-by: Shreyansh Jain <shreyansh.jain@nxp.com>
Diffstat (limited to 'drivers/bus/fslmc')
-rw-r--r--drivers/bus/fslmc/fslmc_bus.c107
-rw-r--r--drivers/bus/fslmc/rte_fslmc.h4
2 files changed, 100 insertions, 11 deletions
diff --git a/drivers/bus/fslmc/fslmc_bus.c b/drivers/bus/fslmc/fslmc_bus.c
index fde5f19..677fcc2 100644
--- a/drivers/bus/fslmc/fslmc_bus.c
+++ b/drivers/bus/fslmc/fslmc_bus.c
@@ -23,6 +23,7 @@
int dpaa2_logtype_bus;
#define VFIO_IOMMU_GROUP_PATH "/sys/kernel/iommu_groups"
+#define FSLMC_BUS_NAME fslmc
struct rte_fslmc_bus rte_fslmc_bus;
uint8_t dpaa2_virt_mode;
@@ -93,6 +94,22 @@ insert_in_device_list(struct rte_dpaa2_device *newdev)
TAILQ_INSERT_TAIL(&rte_fslmc_bus.device_list, newdev, next);
}
+static struct rte_devargs *
+fslmc_devargs_lookup(struct rte_dpaa2_device *dev)
+{
+ struct rte_devargs *devargs;
+ char dev_name[32];
+
+ RTE_EAL_DEVARGS_FOREACH("fslmc", devargs) {
+ devargs->bus->parse(devargs->name, &dev_name);
+ if (strcmp(dev_name, dev->device.name) == 0) {
+ DPAA2_BUS_INFO("**Devargs matched %s", dev_name);
+ return devargs;
+ }
+ }
+ return NULL;
+}
+
static void
dump_device_list(void)
{
@@ -184,6 +201,7 @@ scan_one_fslmc_device(char *dev_name)
DPAA2_BUS_ERR("Unable to clone device name. Out of memory");
goto cleanup;
}
+ dev->device.devargs = fslmc_devargs_lookup(dev);
/* Add device in the fslmc device list */
insert_in_device_list(dev);
@@ -202,6 +220,54 @@ cleanup:
}
static int
+rte_fslmc_parse(const char *name, void *addr)
+{
+ uint16_t dev_id;
+ char *t_ptr;
+ char *sep = strchr(name, ':');
+
+ if (strncmp(name, RTE_STR(FSLMC_BUS_NAME),
+ strlen(RTE_STR(FSLMC_BUS_NAME)))) {
+ return -EINVAL;
+ }
+
+ if (!sep) {
+ DPAA2_BUS_ERR("Incorrect device name observed");
+ return -EINVAL;
+ }
+
+ t_ptr = (char *)(sep + 1);
+
+ if (strncmp("dpni", t_ptr, 4) &&
+ strncmp("dpseci", t_ptr, 6) &&
+ strncmp("dpcon", t_ptr, 5) &&
+ strncmp("dpbp", t_ptr, 4) &&
+ strncmp("dpio", t_ptr, 4) &&
+ strncmp("dpci", t_ptr, 4) &&
+ strncmp("dpmcp", t_ptr, 5) &&
+ strncmp("dpdmai", t_ptr, 6)) {
+ DPAA2_BUS_ERR("Unknown or unsupported device");
+ return -EINVAL;
+ }
+
+ t_ptr = strchr(name, '.');
+ if (!t_ptr) {
+ DPAA2_BUS_ERR("Incorrect device string observed (%s)", t_ptr);
+ return -EINVAL;
+ }
+
+ t_ptr = (char *)(t_ptr + 1);
+ if (sscanf(t_ptr, "%hu", &dev_id) <= 0) {
+ DPAA2_BUS_ERR("Incorrect device string observed (%s)", t_ptr);
+ return -EINVAL;
+ }
+
+ if (addr)
+ strcpy(addr, (char *)(sep + 1));
+ return 0;
+}
+
+static int
rte_fslmc_scan(void)
{
int ret;
@@ -276,6 +342,8 @@ static int
rte_fslmc_probe(void)
{
int ret = 0;
+ int probe_all;
+
struct rte_dpaa2_device *dev;
struct rte_dpaa2_driver *drv;
@@ -305,6 +373,8 @@ rte_fslmc_probe(void)
return 0;
}
+ probe_all = rte_fslmc_bus.bus.conf.scan_mode != RTE_BUS_SCAN_WHITELIST;
+
TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
ret = rte_fslmc_match(drv, dev);
@@ -314,9 +384,21 @@ rte_fslmc_probe(void)
if (!drv->probe)
continue;
- ret = drv->probe(drv, dev);
- if (ret)
- DPAA2_BUS_ERR("Unable to probe");
+ if (dev->device.devargs &&
+ dev->device.devargs->policy == RTE_DEV_BLACKLISTED) {
+ DPAA2_BUS_LOG(DEBUG, "%s Blacklisted, skipping",
+ dev->device.name);
+ continue;
+ }
+
+ if (probe_all ||
+ (dev->device.devargs &&
+ dev->device.devargs->policy ==
+ RTE_DEV_WHITELISTED)) {
+ ret = drv->probe(drv, dev);
+ if (ret)
+ DPAA2_BUS_ERR("Unable to probe");
+ }
break;
}
}
@@ -331,17 +413,19 @@ static struct rte_device *
rte_fslmc_find_device(const struct rte_device *start, rte_dev_cmp_t cmp,
const void *data)
{
+ const struct rte_dpaa2_device *dstart;
struct rte_dpaa2_device *dev;
- TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
- if (start != NULL) {
- if (&dev->device == start)
- start = NULL; /* starting point found */
- continue;
- }
-
+ if (start != NULL) {
+ dstart = RTE_DEV_TO_FSLMC_CONST(start);
+ dev = TAILQ_NEXT(dstart, next);
+ } else {
+ dev = TAILQ_FIRST(&rte_fslmc_bus.device_list);
+ }
+ while (dev != NULL) {
if (cmp(&dev->device, data) == 0)
return &dev->device;
+ dev = TAILQ_NEXT(dev, next);
}
return NULL;
@@ -424,6 +508,7 @@ struct rte_fslmc_bus rte_fslmc_bus = {
.bus = {
.scan = rte_fslmc_scan,
.probe = rte_fslmc_probe,
+ .parse = rte_fslmc_parse,
.find_device = rte_fslmc_find_device,
.get_iommu_class = rte_dpaa2_get_iommu_class,
},
@@ -432,7 +517,7 @@ struct rte_fslmc_bus rte_fslmc_bus = {
.device_count = {0},
};
-RTE_REGISTER_BUS(fslmc, rte_fslmc_bus.bus);
+RTE_REGISTER_BUS(FSLMC_BUS_NAME, rte_fslmc_bus.bus);
RTE_INIT(fslmc_init_log);
static void
diff --git a/drivers/bus/fslmc/rte_fslmc.h b/drivers/bus/fslmc/rte_fslmc.h
index 7b34368..33552b4 100644
--- a/drivers/bus/fslmc/rte_fslmc.h
+++ b/drivers/bus/fslmc/rte_fslmc.h
@@ -31,6 +31,7 @@ extern "C" {
#include <rte_dev.h>
#include <rte_bus.h>
#include <rte_tailq.h>
+#include <rte_devargs.h>
#include <fslmc_vfio.h>
@@ -49,6 +50,9 @@ struct rte_dpaa2_driver;
TAILQ_HEAD(rte_fslmc_device_list, rte_dpaa2_device);
TAILQ_HEAD(rte_fslmc_driver_list, rte_dpaa2_driver);
+#define RTE_DEV_TO_FSLMC_CONST(ptr) \
+ container_of(ptr, const struct rte_dpaa2_device, device)
+
extern struct rte_fslmc_bus rte_fslmc_bus;
enum rte_dpaa2_dev_type {