From 4513f92576856c552212fb9608aca56b88022454 Mon Sep 17 00:00:00 2001 From: Ariel Elior Date: Tue, 1 Jan 2013 05:22:25 +0000 Subject: [PATCH] bnx2x: Add to VF <-> PF channel the release request VF driver uses this request when removed. The PF driver reclaims all resources allocated for that VF at this time. Signed-off-by: Ariel Elior Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 1 + .../net/ethernet/broadcom/bnx2x/bnx2x_main.c | 43 +++++++++++++++++++ .../net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h | 15 +++++++ 3 files changed, 59 insertions(+) diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h index eebc01df969b..4dc754bf9d57 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h @@ -2220,6 +2220,7 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms, int bnx2x_get_vf_id(struct bnx2x *bp, u32 *vf_id); int bnx2x_send_msg2pf(struct bnx2x *bp, u8 *done, dma_addr_t msg_mapping); int bnx2x_vfpf_acquire(struct bnx2x *bp, u8 tx_count, u8 rx_count); +int bnx2x_vfpf_release(struct bnx2x *bp); /* Congestion management fairness mode */ #define CMNG_FNS_NONE 0 #define CMNG_FNS_MINMAX 1 diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c index e53f851c7dfc..3dd5b26022fd 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c @@ -12363,6 +12363,9 @@ static void bnx2x_remove_one(struct pci_dev *pdev) /* Make sure RESET task is not scheduled before continuing */ cancel_delayed_work_sync(&bp->sp_rtnl_task); + /* send message via vfpf channel to release the resources of this vf */ + if (IS_VF(bp)) + bnx2x_vfpf_release(bp); if (bp->regview) iounmap(bp->regview); @@ -13343,3 +13346,43 @@ int bnx2x_vfpf_acquire(struct bnx2x *bp, u8 tx_count, u8 rx_count) return 0; } + +int bnx2x_vfpf_release(struct bnx2x *bp) +{ + struct vfpf_release_tlv *req = &bp->vf2pf_mbox->req.release; + struct pfvf_general_resp_tlv *resp = &bp->vf2pf_mbox->resp.general_resp; + u32 rc = 0, vf_id; + + /* clear mailbox and prep first tlv */ + bnx2x_vfpf_prep(bp, &req->first_tlv, CHANNEL_TLV_RELEASE, sizeof(*req)); + + if (bnx2x_get_vf_id(bp, &vf_id)) + return -EAGAIN; + + req->vf_id = vf_id; + + /* add list termination tlv */ + bnx2x_add_tlv(bp, req, req->first_tlv.tl.length, CHANNEL_TLV_LIST_END, + sizeof(struct channel_list_end_tlv)); + + /* output tlvs list */ + bnx2x_dp_tlv_list(bp, req); + + /* send release request */ + rc = bnx2x_send_msg2pf(bp, &resp->hdr.status, bp->vf2pf_mbox_mapping); + + if (rc) + /* PF timeout */ + return rc; + if (resp->hdr.status == PFVF_STATUS_SUCCESS) { + /* PF released us */ + DP(BNX2X_MSG_SP, "vf released\n"); + } else { + /* PF reports error */ + BNX2X_ERR("PF failed our release request - are we out of sync? response status: %d\n", + resp->hdr.status); + return -EAGAIN; + } + + return 0; +} diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h index 728491fdb9d2..561c6568b43f 100644 --- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h +++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_vfpf.h @@ -68,6 +68,11 @@ struct pfvf_tlv { u8 padding[3]; }; +/* response tlv used for most tlvs */ +struct pfvf_general_resp_tlv { + struct pfvf_tlv hdr; +}; + /* used to terminate and pad a tlv list */ struct channel_list_end_tlv { struct channel_tlv tl; @@ -125,6 +130,13 @@ struct pfvf_acquire_resp_tlv { } resc; }; +/* release the VF's acquired resources */ +struct vfpf_release_tlv { + struct vfpf_first_tlv first_tlv; + u16 vf_id; + u8 padding[2]; +}; + struct tlv_buffer_size { u8 tlv_buffer[TLV_BUFFER_SIZE]; }; @@ -132,11 +144,13 @@ struct tlv_buffer_size { union vfpf_tlvs { struct vfpf_first_tlv first_tlv; struct vfpf_acquire_tlv acquire; + struct vfpf_release_tlv release; struct channel_list_end_tlv list_end; struct tlv_buffer_size tlv_buf_size; }; union pfvf_tlvs { + struct pfvf_general_resp_tlv general_resp; struct pfvf_acquire_resp_tlv acquire_resp; struct channel_list_end_tlv list_end; struct tlv_buffer_size tlv_buf_size; @@ -147,6 +161,7 @@ union pfvf_tlvs { enum channel_tlvs { CHANNEL_TLV_NONE, CHANNEL_TLV_ACQUIRE, + CHANNEL_TLV_RELEASE, CHANNEL_TLV_LIST_END, CHANNEL_TLV_MAX }; -- 2.20.1