From 2fdd6bafe37db6b417c9609271db4ea5a92550c0 Mon Sep 17 00:00:00 2001 From: lipeng Date: Fri, 28 Apr 2017 14:49:46 +0800 Subject: [PATCH] net: hns: support deferred probe when can not obtain irq In the hip06 and hip07 SoCs, the interrupt lines from the DSAF controllers are connected to mbigen hw module. The mbigen module is probed with module_init, and, as such, is not guaranteed to probe before the HNS driver. So we need to support deferred probe. Signed-off-by: lipeng Reviewed-by: Yisen Zhuang Reviewed-by: Matthias Brugger Signed-off-by: David S. Miller --- drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c | 4 +++- drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c | 8 +++++++- drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h | 2 +- 3 files changed, 11 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c index eba406bea52f..93e71e27401b 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_ppe.c @@ -510,7 +510,9 @@ int hns_ppe_init(struct dsaf_device *dsaf_dev) hns_ppe_get_cfg(dsaf_dev->ppe_common[i]); - hns_rcb_get_cfg(dsaf_dev->rcb_common[i]); + ret = hns_rcb_get_cfg(dsaf_dev->rcb_common[i]); + if (ret) + goto get_cfg_fail; } for (i = 0; i < HNS_PPE_COM_NUM; i++) diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c index c20a0f4f8f02..e2e28532e4dc 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.c @@ -492,7 +492,7 @@ static int hns_rcb_get_base_irq_idx(struct rcb_common_cb *rcb_common) *hns_rcb_get_cfg - get rcb config *@rcb_common: rcb common device */ -void hns_rcb_get_cfg(struct rcb_common_cb *rcb_common) +int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common) { struct ring_pair_cb *ring_pair_cb; u32 i; @@ -517,10 +517,16 @@ void hns_rcb_get_cfg(struct rcb_common_cb *rcb_common) ring_pair_cb->virq[HNS_RCB_IRQ_IDX_RX] = is_ver1 ? platform_get_irq(pdev, base_irq_idx + i * 2 + 1) : platform_get_irq(pdev, base_irq_idx + i * 3); + if ((ring_pair_cb->virq[HNS_RCB_IRQ_IDX_TX] == -EPROBE_DEFER) || + (ring_pair_cb->virq[HNS_RCB_IRQ_IDX_RX] == -EPROBE_DEFER)) + return -EPROBE_DEFER; + ring_pair_cb->q.phy_base = RCB_COMM_BASE_TO_RING_BASE(rcb_common->phy_base, i); hns_rcb_ring_pair_get_cfg(ring_pair_cb); } + + return 0; } /** diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h index a664ee88ab45..602816498c8d 100644 --- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h +++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h @@ -121,7 +121,7 @@ int hns_rcb_common_get_cfg(struct dsaf_device *dsaf_dev, int comm_index); void hns_rcb_common_free_cfg(struct dsaf_device *dsaf_dev, u32 comm_index); int hns_rcb_common_init_hw(struct rcb_common_cb *rcb_common); void hns_rcb_start(struct hnae_queue *q, u32 val); -void hns_rcb_get_cfg(struct rcb_common_cb *rcb_common); +int hns_rcb_get_cfg(struct rcb_common_cb *rcb_common); void hns_rcb_get_queue_mode(enum dsaf_mode dsaf_mode, u16 *max_vfn, u16 *max_q_per_vf); -- 2.20.1