#include <rte_memcpy.h>
#include <rte_ethdev.h>
-#include "rte_fslmc.h"
-#include "fslmc_vfio.h"
+#include <rte_fslmc.h>
+#include <fslmc_vfio.h>
#define FSLMC_BUS_LOG(level, fmt, args...) \
- RTE_LOG(level, EAL, "%s(): " fmt "\n", __func__, ##args)
+ RTE_LOG(level, EAL, fmt "\n", ##args)
+
+#define VFIO_IOMMU_GROUP_PATH "/sys/kernel/iommu_groups"
struct rte_fslmc_bus rte_fslmc_bus;
+static void
+cleanup_fslmc_device_list(void)
+{
+ struct rte_dpaa2_device *dev;
+ struct rte_dpaa2_device *t_dev;
+
+ TAILQ_FOREACH_SAFE(dev, &rte_fslmc_bus.device_list, next, t_dev) {
+ TAILQ_REMOVE(&rte_fslmc_bus.device_list, dev, next);
+ free(dev);
+ dev = NULL;
+ }
+}
+
+static int
+scan_one_fslmc_device(char *dev_name)
+{
+ char *dup_dev_name, *t_ptr;
+ struct rte_dpaa2_device *dev;
+
+ if (!dev_name)
+ return -1;
+
+ /* Ignore the Container name itself */
+ if (!strncmp("dprc", dev_name, 4))
+ return 0;
+
+ /* Creating a temporary copy to perform cut-parse over string */
+ dup_dev_name = strdup(dev_name);
+ if (!dup_dev_name) {
+ FSLMC_BUS_LOG(ERR, "Out of memory.");
+ return -ENOMEM;
+ }
+
+ /* For all other devices, we allocate rte_dpaa2_device.
+ * For those devices where there is no driver, probe would release
+ * the memory associated with the rte_dpaa2_device after necessary
+ * initialization.
+ */
+ dev = calloc(1, sizeof(struct rte_dpaa2_device));
+ if (!dev) {
+ FSLMC_BUS_LOG(ERR, "Out of memory.");
+ free(dup_dev_name);
+ return -ENOMEM;
+ }
+
+ /* Parse the device name and ID */
+ t_ptr = strtok(dup_dev_name, ".");
+ if (!t_ptr) {
+ FSLMC_BUS_LOG(ERR, "Incorrect device string observed.");
+ goto cleanup;
+ }
+ if (!strncmp("dpni", t_ptr, 4))
+ dev->dev_type = DPAA2_ETH;
+ else if (!strncmp("dpseci", t_ptr, 6))
+ dev->dev_type = DPAA2_CRYPTO;
+ else if (!strncmp("dpcon", t_ptr, 5))
+ dev->dev_type = DPAA2_CON;
+ else if (!strncmp("dpbp", t_ptr, 4))
+ dev->dev_type = DPAA2_BPOOL;
+ else if (!strncmp("dpio", t_ptr, 4))
+ dev->dev_type = DPAA2_IO;
+ else if (!strncmp("dpci", t_ptr, 5))
+ dev->dev_type = DPAA2_CI;
+ else if (!strncmp("dpmcp", t_ptr, 5))
+ dev->dev_type = DPAA2_MPORTAL;
+ else
+ dev->dev_type = DPAA2_UNKNOWN;
+
+ t_ptr = strtok(NULL, ".");
+ if (!t_ptr) {
+ FSLMC_BUS_LOG(ERR, "Incorrect device string observed (%s).",
+ t_ptr);
+ goto cleanup;
+ }
+
+ sscanf(t_ptr, "%hu", &dev->object_id);
+ dev->device.name = strdup(dev_name);
+ if (!dev->device.name) {
+ FSLMC_BUS_LOG(ERR, "Out of memory.");
+ goto cleanup;
+ }
+
+ /* Add device in the fslmc device list */
+ TAILQ_INSERT_TAIL(&rte_fslmc_bus.device_list, dev, next);
+
+ /* Don't need the duplicated device filesystem entry anymore */
+ if (dup_dev_name)
+ free(dup_dev_name);
+
+ return 0;
+cleanup:
+ if (dup_dev_name)
+ free(dup_dev_name);
+ if (dev)
+ free(dev);
+ return -1;
+}
+
static int
rte_fslmc_scan(void)
{
int ret;
+ int device_count = 0;
+ char fslmc_dirpath[PATH_MAX];
+ DIR *dir;
+ struct dirent *entry;
+ static int process_once;
+ int groupid;
- ret = fslmc_vfio_setup_group();
- if (ret) {
- FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup VFIO");
- return ret;
+ if (process_once) {
+ FSLMC_BUS_LOG(DEBUG,
+ "Fslmc bus already scanned. Not rescanning");
+ return 0;
}
+ process_once = 1;
- ret = fslmc_vfio_process_group();
- if (ret) {
- FSLMC_BUS_LOG(ERR, "fslmc: Unable to setup devices");
- return -1;
+ ret = fslmc_get_container_group(&groupid);
+ if (ret != 0)
+ goto scan_fail;
+
+ /* Scan devices on the group */
+ sprintf(fslmc_dirpath, "%s/%d/devices", VFIO_IOMMU_GROUP_PATH,
+ groupid);
+ dir = opendir(fslmc_dirpath);
+ if (!dir) {
+ FSLMC_BUS_LOG(ERR, "Unable to open VFIO group dir.");
+ goto scan_fail;
}
- RTE_LOG(INFO, EAL, "fslmc: Bus scan completed\n");
+ while ((entry = readdir(dir)) != NULL) {
+ if (entry->d_name[0] == '.' || entry->d_type != DT_LNK)
+ continue;
+
+ ret = scan_one_fslmc_device(entry->d_name);
+ if (ret != 0) {
+ /* Error in parsing directory - exit gracefully */
+ goto scan_fail_cleanup;
+ }
+ device_count += 1;
+ }
+
+ FSLMC_BUS_LOG(INFO, "fslmc: Bus scan completed");
+
+ closedir(dir);
+ return 0;
+
+scan_fail_cleanup:
+ closedir(dir);
+
+ /* Remove all devices in the list */
+ cleanup_fslmc_device_list();
+scan_fail:
+ FSLMC_BUS_LOG(DEBUG, "FSLMC Bus Not Available. Skipping.");
+ /* Irrespective of failure, scan only return success */
return 0;
}
struct rte_dpaa2_device *dev;
struct rte_dpaa2_driver *drv;
+ if (TAILQ_EMPTY(&rte_fslmc_bus.device_list))
+ return 0;
+
+ ret = fslmc_vfio_setup_group();
+ if (ret) {
+ FSLMC_BUS_LOG(ERR, "Unable to setup VFIO %d", ret);
+ return 0;
+ }
+
+ ret = fslmc_vfio_process_group();
+ if (ret) {
+ FSLMC_BUS_LOG(ERR, "Unable to setup devices %d", ret);
+ return 0;
+ }
+
TAILQ_FOREACH(dev, &rte_fslmc_bus.device_list, next) {
TAILQ_FOREACH(drv, &rte_fslmc_bus.driver_list, next) {
ret = rte_fslmc_match(drv, dev);
break;
}
}
- return ret;
+
+ return 0;
}
static struct rte_device *
git.droids-corp.org / dpdk.git / blobdiff