Doorbell registers are used by the driver to signal to the NIC
that requests are waiting on the message queues.
Signed-off-by: Alfredo Cardigliano <cardigliano@ntop.org>
Reviewed-by: Shannon Nelson <snelson@pensando.io>
---
drivers/net/ionic/ionic_dev.c | 15 +++++++++++++++
drivers/net/ionic/ionic_dev.h | 19 +++++++++++++++++++
drivers/net/ionic/ionic_lif.c | 24 ++++++++++++++++++++++++
drivers/net/ionic/ionic_lif.h | 4 +++-
4 files changed, 61 insertions(+), 1 deletion(-)
@@ -5,6 +5,7 @@
#include <rte_malloc.h>
#include "ionic_dev.h"
+#include "ionic_lif.h"
#include "ionic.h"
int
@@ -291,3 +292,17 @@ ionic_dev_cmd_lif_reset(struct ionic_dev *idev, uint16_t lif_index)
ionic_dev_cmd_go(idev, &cmd);
}
+
+int
+ionic_db_page_num(struct ionic_lif *lif, int pid)
+{
+ return (lif->index * 0) + pid;
+}
+
+void
+ionic_intr_init(struct ionic_dev *idev, struct ionic_intr_info *intr,
+ unsigned long index)
+{
+ ionic_intr_clean(idev->intr_ctrl, index);
+ intr->index = index;
+}
@@ -132,6 +132,23 @@ struct ionic_dev {
uint32_t port_info_sz;
};
+#define IONIC_INTR_INDEX_NOT_ASSIGNED (-1)
+#define IONIC_INTR_NAME_MAX_SZ (32)
+
+struct ionic_intr_info {
+ char name[IONIC_INTR_NAME_MAX_SZ];
+ int index;
+ uint32_t vector;
+ struct ionic_intr __iomem *ctrl;
+ uint64_t rearm_count;
+};
+
+struct ionic_lif;
+struct ionic_adapter;
+
+void ionic_intr_init(struct ionic_dev *idev, struct ionic_intr_info *intr,
+ unsigned long index);
+
int ionic_dev_setup(struct ionic_adapter *adapter);
void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
@@ -161,4 +178,6 @@ void ionic_dev_cmd_lif_init(struct ionic_dev *idev, uint16_t lif_index,
rte_iova_t addr);
void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, uint16_t lif_index);
+int ionic_db_page_num(struct ionic_lif *lif, int pid);
+
#endif /* _IONIC_DEV_H_ */
@@ -10,15 +10,39 @@
#include "ionic_lif.h"
#include "ionic_ethdev.h"
+static void *
+ionic_bus_map_dbpage(struct ionic_adapter *adapter, int page_num)
+{
+ char *vaddr = adapter->bars[IONIC_PCI_BAR_DBELL].vaddr;
+
+ if (adapter->num_bars <= IONIC_PCI_BAR_DBELL)
+ return NULL;
+
+ return (void *)&vaddr[page_num << PAGE_SHIFT];
+}
+
int
ionic_lif_alloc(struct ionic_lif *lif)
{
+ struct ionic_adapter *adapter = lif->adapter;
uint32_t socket_id = rte_socket_id();
+ int dbpage_num;
snprintf(lif->name, sizeof(lif->name), "lif%u", lif->index);
ionic_init_print(DEBUG, "Allocating Lif Info");
+ lif->kern_pid = 0;
+
+ dbpage_num = ionic_db_page_num(lif, 0);
+
+ lif->kern_dbpage = ionic_bus_map_dbpage(adapter, dbpage_num);
+
+ if (!lif->kern_dbpage) {
+ ionic_init_print(ERR, "Cannot map dbpage, aborting");
+ return -ENOMEM;
+ }
+
lif->info_sz = RTE_ALIGN(sizeof(*lif->info), PAGE_SIZE);
lif->info_z = rte_eth_dma_zone_reserve(lif->eth_dev,
@@ -23,8 +23,10 @@ struct ionic_lif {
uint16_t port_id; /**< Device port identifier */
uint32_t index;
uint32_t hw_index;
- char name[IONIC_LIF_NAME_MAX_SZ];
uint32_t state;
+ uint32_t kern_pid;
+ struct ionic_doorbell __iomem *kern_dbpage;
+ char name[IONIC_LIF_NAME_MAX_SZ];
uint32_t info_sz;
struct ionic_lif_info *info;
rte_iova_t info_pa;