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liquidio CN23XX: VF mailbox

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Adds support for VF mailbox setup.

Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Raghu Vatsavayi 2016-11-28 16:54:39 -08:00 committed by David S. Miller
parent 9003baf09e
commit f7cdd64bed
2 changed files with 69 additions and 0 deletions
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59
drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c
View File

@ -17,6 +17,7 @@
***********************************************************************/
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/vmalloc.h>
#include "liquidio_common.h"
#include "octeon_droq.h"
#include "octeon_iq.h"
@ -24,6 +25,7 @@
#include "octeon_device.h"
#include "cn23xx_vf_device.h"
#include "octeon_main.h"
#include "octeon_mailbox.h"
static int cn23xx_vf_reset_io_queues(struct octeon_device *oct, u32 num_queues)
{
@ -231,6 +233,61 @@ static void cn23xx_setup_vf_oq_regs(struct octeon_device *oct, u32 oq_no)
(u8 *)oct->mmio[0].hw_addr + CN23XX_VF_SLI_OQ_PKTS_CREDIT(oq_no);
}
static void cn23xx_vf_mbox_thread(struct work_struct *work)
{
struct cavium_wk *wk = (struct cavium_wk *)work;
struct octeon_mbox *mbox = (struct octeon_mbox *)wk->ctxptr;
octeon_mbox_process_message(mbox);
}
static int cn23xx_free_vf_mbox(struct octeon_device *oct)
{
cancel_delayed_work_sync(&oct->mbox[0]->mbox_poll_wk.work);
vfree(oct->mbox[0]);
return 0;
}
static int cn23xx_setup_vf_mbox(struct octeon_device *oct)
{
struct octeon_mbox *mbox = NULL;
mbox = vmalloc(sizeof(*mbox));
if (!mbox)
return 1;
memset(mbox, 0, sizeof(struct octeon_mbox));
spin_lock_init(&mbox->lock);
mbox->oct_dev = oct;
mbox->q_no = 0;
mbox->state = OCTEON_MBOX_STATE_IDLE;
/* VF mbox interrupt reg */
mbox->mbox_int_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_VF_SLI_PKT_MBOX_INT(0);
/* VF reads from SIG0 reg */
mbox->mbox_read_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_PKT_PF_VF_MBOX_SIG(0, 0);
/* VF writes into SIG1 reg */
mbox->mbox_write_reg =
(u8 *)oct->mmio[0].hw_addr + CN23XX_SLI_PKT_PF_VF_MBOX_SIG(0, 1);
INIT_DELAYED_WORK(&mbox->mbox_poll_wk.work,
cn23xx_vf_mbox_thread);
mbox->mbox_poll_wk.ctxptr = mbox;
oct->mbox[0] = mbox;
writeq(OCTEON_PFVFSIG, mbox->mbox_read_reg);
return 0;
}
static int cn23xx_enable_vf_io_queues(struct octeon_device *oct)
{
u32 q_no;
@ -338,6 +395,8 @@ int cn23xx_setup_octeon_vf_device(struct octeon_device *oct)
oct->fn_list.setup_iq_regs = cn23xx_setup_vf_iq_regs;
oct->fn_list.setup_oq_regs = cn23xx_setup_vf_oq_regs;
oct->fn_list.setup_mbox = cn23xx_setup_vf_mbox;
oct->fn_list.free_mbox = cn23xx_free_vf_mbox;
oct->fn_list.setup_device_regs = cn23xx_setup_vf_device_regs;
oct->fn_list.enable_io_queues = cn23xx_enable_vf_io_queues;

10
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c
View File

@ -143,6 +143,10 @@ static void octeon_destroy_resources(struct octeon_device *oct)
int i;
switch (atomic_read(&oct->status)) {
case OCT_DEV_MBOX_SETUP_DONE:
oct->fn_list.free_mbox(oct);
/* fallthrough */
case OCT_DEV_IN_RESET:
case OCT_DEV_DROQ_INIT_DONE:
mdelay(100);
@ -316,6 +320,12 @@ static int octeon_device_init(struct octeon_device *oct)
}
atomic_set(&oct->status, OCT_DEV_DROQ_INIT_DONE);
if (oct->fn_list.setup_mbox(oct)) {
dev_err(&oct->pci_dev->dev, "Mailbox setup failed\n");
return 1;
}
atomic_set(&oct->status, OCT_DEV_MBOX_SETUP_DONE);
return 0;
}