common/octeontx2: handle intra device operations

[dpdk.git] / drivers / common / octeontx2 / otx2_common.c

diff --git a/drivers/common/octeontx2/otx2_common.c b/drivers/common/octeontx2/otx2_common.c
index a4b91b4..7e45366 100644 (file)
--- a/drivers/common/octeontx2/otx2_common.c
+++ b/drivers/common/octeontx2/otx2_common.c
@@ -2,9 +2,172 @@
  * Copyright(C) 2019 Marvell International Ltd.
  */
 
+#include <rte_atomic.h>
+#include <rte_malloc.h>
 #include <rte_log.h>
 
 #include "otx2_common.h"
+#include "otx2_dev.h"
+#include "otx2_mbox.h"
+
+/**
+ * @internal
+ * Set default NPA configuration.
+ */
+void
+otx2_npa_set_defaults(struct otx2_idev_cfg *idev)
+{
+       idev->npa_pf_func = 0;
+       rte_atomic16_set(&idev->npa_refcnt, 0);
+}
+
+/**
+ * @internal
+ * Get intra device config structure.
+ */
+struct otx2_idev_cfg *
+otx2_intra_dev_get_cfg(void)
+{
+       const char name[] = "octeontx2_intra_device_conf";
+       const struct rte_memzone *mz;
+       struct otx2_idev_cfg *idev;
+
+       mz = rte_memzone_lookup(name);
+       if (mz != NULL)
+               return mz->addr;
+
+       /* Request for the first time */
+       mz = rte_memzone_reserve_aligned(name, sizeof(struct otx2_idev_cfg),
+                                        SOCKET_ID_ANY, 0, OTX2_ALIGN);
+       if (mz != NULL) {
+               idev = mz->addr;
+               idev->sso_pf_func = 0;
+               idev->npa_lf = NULL;
+               otx2_npa_set_defaults(idev);
+               return idev;
+       }
+       return NULL;
+}
+
+/**
+ * @internal
+ * Get SSO PF_FUNC.
+ */
+uint16_t
+otx2_sso_pf_func_get(void)
+{
+       struct otx2_idev_cfg *idev;
+       uint16_t sso_pf_func;
+
+       sso_pf_func = 0;
+       idev = otx2_intra_dev_get_cfg();
+
+       if (idev != NULL)
+               sso_pf_func = idev->sso_pf_func;
+
+       return sso_pf_func;
+}
+
+/**
+ * @internal
+ * Set SSO PF_FUNC.
+ */
+void
+otx2_sso_pf_func_set(uint16_t sso_pf_func)
+{
+       struct otx2_idev_cfg *idev;
+
+       idev = otx2_intra_dev_get_cfg();
+
+       if (idev != NULL) {
+               idev->sso_pf_func = sso_pf_func;
+               rte_smp_wmb();
+       }
+}
+
+/**
+ * @internal
+ * Get NPA PF_FUNC.
+ */
+uint16_t
+otx2_npa_pf_func_get(void)
+{
+       struct otx2_idev_cfg *idev;
+       uint16_t npa_pf_func;
+
+       npa_pf_func = 0;
+       idev = otx2_intra_dev_get_cfg();
+
+       if (idev != NULL)
+               npa_pf_func = idev->npa_pf_func;
+
+       return npa_pf_func;
+}
+
+/**
+ * @internal
+ * Get NPA lf object.
+ */
+struct otx2_npa_lf *
+otx2_npa_lf_obj_get(void)
+{
+       struct otx2_idev_cfg *idev;
+
+       idev = otx2_intra_dev_get_cfg();
+
+       if (idev != NULL && rte_atomic16_read(&idev->npa_refcnt))
+               return idev->npa_lf;
+
+       return NULL;
+}
+
+/**
+ * @internal
+ * Is NPA lf active for the given device?.
+ */
+int
+otx2_npa_lf_active(void *otx2_dev)
+{
+       struct otx2_dev *dev = otx2_dev;
+       struct otx2_idev_cfg *idev;
+
+       /* Check if npalf is actively used on this dev */
+       idev = otx2_intra_dev_get_cfg();
+       if (!idev || !idev->npa_lf || idev->npa_lf->mbox != dev->mbox)
+               return 0;
+
+       return rte_atomic16_read(&idev->npa_refcnt);
+}
+
+/*
+ * @internal
+ * Gets reference only to existing NPA LF object.
+ */
+int otx2_npa_lf_obj_ref(void)
+{
+       struct otx2_idev_cfg *idev;
+       uint16_t cnt;
+       int rc;
+
+       idev = otx2_intra_dev_get_cfg();
+
+       /* Check if ref not possible */
+       if (idev == NULL)
+               return -EINVAL;
+
+
+       /* Get ref only if > 0 */
+       cnt = rte_atomic16_read(&idev->npa_refcnt);
+       while (cnt != 0) {
+               rc = rte_atomic16_cmpset(&idev->npa_refcnt_u16, cnt, cnt + 1);
+               if (rc)
+                       break;
+
+               cnt = rte_atomic16_read(&idev->npa_refcnt);
+       }
+
+       return cnt ? 0 : -EINVAL;
+}
 
 /**
  * @internal