d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/ionic: add doorbells

Browse Source 
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>
This commit is contained in:
Alfredo Cardigliano 2020-01-19 16:53:45 +01:00 committed by Ferruh Yigit
parent 669c8de67c
commit c67719e133
4 changed files with 58 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/net/ionic/ionic_dev.c
View File

@ -5,6 +5,7 @@
#include <rte_malloc.h>
#include "ionic_dev.h"
#include "ionic_lif.h"
#include "ionic.h"
int
@ -297,3 +298,17 @@ 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;
}

18
drivers/net/ionic/ionic_dev.h
View File

@ -121,6 +121,22 @@ 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;
};
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);
@ -150,4 +166,6 @@ 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_ */

23
drivers/net/ionic/ionic_lif.c
View File

@ -10,15 +10,38 @@
#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_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_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,

2
drivers/net/ionic/ionic_lif.h
View File

@ -24,6 +24,8 @@ struct ionic_lif {
uint32_t index;
uint32_t hw_index;
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;