From f7cdd64bede8af6d86eeae6f640838ba4a039085 Mon Sep 17 00:00:00 2001 From: Raghu Vatsavayi Date: Mon, 28 Nov 2016 16:54:39 -0800 Subject: [PATCH] liquidio CN23XX: VF mailbox Adds support for VF mailbox setup. Signed-off-by: Raghu Vatsavayi Signed-off-by: Derek Chickles Signed-off-by: Satanand Burla Signed-off-by: Felix Manlunas Signed-off-by: David S. Miller --- .../ethernet/cavium/liquidio/cn23xx_vf_device.c | 59 ++++++++++++++++++++++ drivers/net/ethernet/cavium/liquidio/lio_vf_main.c | 10 ++++ 2 files changed, 69 insertions(+) diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c index ad4e44274298..7dfec44ace29 100644 --- a/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c +++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c @@ -17,6 +17,7 @@ ***********************************************************************/ #include #include +#include #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; diff --git a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c index 162e47bbe2dd..43a1e3f6fcf8 100644 --- a/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c +++ b/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c @@ -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; } -- 2.11.0