From a72dc1992de85ca712836c845458fa72824e355e Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sat, 8 Jan 2022 14:48:59 +0100 Subject: [PATCH] qlcnic: Simplify DMA setting As stated in [1], dma_set_mask() with a 64-bit mask will never fail if dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also fail for the same reason. So qlcnic_set_dma_mask(), (in qlcnic_main.c) can be simplified a lot and inlined directly in its only caller. If dma_set_mask_and_coherent() succeeds, 'pci_using_dac' is known to be 1. So it can be removed from all the calling chain. qlcnic_setup_netdev() can finally be simplified as-well. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/4996ab0337d62ec6a54b2edf234cd5ced4b4d7ad.1641649611.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski --- drivers/net/ethernet/qlogic/qlcnic/qlcnic.h | 2 +- .../ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h | 2 +- .../ethernet/qlogic/qlcnic/qlcnic_83xx_init.c | 4 +- .../net/ethernet/qlogic/qlcnic/qlcnic_main.c | 38 +++++-------------- .../net/ethernet/qlogic/qlcnic/qlcnic_sriov.h | 2 +- .../qlogic/qlcnic/qlcnic_sriov_common.c | 9 ++--- 6 files changed, 19 insertions(+), 38 deletions(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h index be7abee160e7..b25102fded7b 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic.h @@ -1698,7 +1698,7 @@ int qlcnic_set_vxlan_port(struct qlcnic_adapter *adapter, u16 port); int qlcnic_set_vxlan_parsing(struct qlcnic_adapter *adapter, u16 port); int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter); int qlcnic_read_mac_addr(struct qlcnic_adapter *); -int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *, int); +int qlcnic_setup_netdev(struct qlcnic_adapter *, struct net_device *); void qlcnic_set_netdev_features(struct qlcnic_adapter *, struct qlcnic_esw_func_cfg *); void qlcnic_sriov_vf_set_multi(struct net_device *); diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h index 6f1d9c1fd1b0..23cd47d588e5 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.h @@ -609,7 +609,7 @@ int qlcnic_83xx_read_flash_descriptor_table(struct qlcnic_adapter *); int qlcnic_83xx_flash_read32(struct qlcnic_adapter *, u32, u8 *, int); int qlcnic_83xx_lockless_flash_read32(struct qlcnic_adapter *, u32, u8 *, int); -int qlcnic_83xx_init(struct qlcnic_adapter *, int); +int qlcnic_83xx_init(struct qlcnic_adapter *); int qlcnic_83xx_idc_ready_state_entry(struct qlcnic_adapter *); void qlcnic_83xx_idc_poll_dev_state(struct work_struct *); void qlcnic_83xx_idc_exit(struct qlcnic_adapter *); diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c index 27dffa299ca6..dbb800769cb6 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c @@ -2432,7 +2432,7 @@ static void qlcnic_83xx_init_rings(struct qlcnic_adapter *adapter) qlcnic_set_sds_ring_count(adapter, rx_cnt); } -int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac) +int qlcnic_83xx_init(struct qlcnic_adapter *adapter) { struct qlcnic_hardware_context *ahw = adapter->ahw; int err = 0; @@ -2466,7 +2466,7 @@ int qlcnic_83xx_init(struct qlcnic_adapter *adapter, int pci_using_dac) goto exit; if (qlcnic_sriov_vf_check(adapter)) { - err = qlcnic_sriov_vf_init(adapter, pci_using_dac); + err = qlcnic_sriov_vf_init(adapter); if (err) goto detach_mbx; else diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c index ed84f0f97623..d320567b2cca 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_main.c @@ -2258,8 +2258,7 @@ static int qlcnic_set_real_num_queues(struct qlcnic_adapter *adapter, } int -qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev, - int pci_using_dac) +qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev) { int err; struct pci_dev *pdev = adapter->pdev; @@ -2278,20 +2277,15 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev, netdev->features |= (NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_RXCSUM | NETIF_F_IPV6_CSUM | NETIF_F_GRO | - NETIF_F_HW_VLAN_CTAG_RX); + NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA); netdev->vlan_features |= (NETIF_F_SG | NETIF_F_IP_CSUM | - NETIF_F_IPV6_CSUM); + NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA); if (QLCNIC_IS_TSO_CAPABLE(adapter)) { netdev->features |= (NETIF_F_TSO | NETIF_F_TSO6); netdev->vlan_features |= (NETIF_F_TSO | NETIF_F_TSO6); } - if (pci_using_dac) { - netdev->features |= NETIF_F_HIGHDMA; - netdev->vlan_features |= NETIF_F_HIGHDMA; - } - if (qlcnic_vlan_tx_check(adapter)) netdev->features |= (NETIF_F_HW_VLAN_CTAG_TX); @@ -2341,20 +2335,6 @@ qlcnic_setup_netdev(struct qlcnic_adapter *adapter, struct net_device *netdev, return 0; } -static int qlcnic_set_dma_mask(struct pci_dev *pdev, int *pci_using_dac) -{ - if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) - *pci_using_dac = 1; - else if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) - *pci_using_dac = 0; - else { - dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n"); - return -EIO; - } - - return 0; -} - void qlcnic_free_tx_rings(struct qlcnic_adapter *adapter) { int ring; @@ -2441,8 +2421,8 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) struct net_device *netdev = NULL; struct qlcnic_adapter *adapter = NULL; struct qlcnic_hardware_context *ahw; - int err, pci_using_dac = -1; char board_name[QLCNIC_MAX_BOARD_NAME_LEN + 19]; /* MAC + ": " + name */ + int err; err = pci_enable_device(pdev); if (err) @@ -2453,9 +2433,11 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) goto err_out_disable_pdev; } - err = qlcnic_set_dma_mask(pdev, &pci_using_dac); - if (err) + err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (err) { + dev_err(&pdev->dev, "Unable to set DMA mask, aborting\n"); goto err_out_disable_pdev; + } err = pci_request_regions(pdev, qlcnic_driver_name); if (err) @@ -2569,7 +2551,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) } else if (qlcnic_83xx_check(adapter)) { qlcnic_83xx_check_vf(adapter, ent); adapter->portnum = adapter->ahw->pci_func; - err = qlcnic_83xx_init(adapter, pci_using_dac); + err = qlcnic_83xx_init(adapter); if (err) { switch (err) { case -ENOTRECOVERABLE: @@ -2633,7 +2615,7 @@ qlcnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) if (adapter->portnum == 0) qlcnic_set_drv_version(adapter); - err = qlcnic_setup_netdev(adapter, netdev, pci_using_dac); + err = qlcnic_setup_netdev(adapter, netdev); if (err) goto err_out_disable_mbx_intr; diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h index d0111cb3b40e..c42b99cd58bd 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov.h @@ -188,7 +188,7 @@ int qlcnic_sriov_init(struct qlcnic_adapter *, int); void qlcnic_sriov_cleanup(struct qlcnic_adapter *); void __qlcnic_sriov_cleanup(struct qlcnic_adapter *); void qlcnic_sriov_vf_register_map(struct qlcnic_hardware_context *); -int qlcnic_sriov_vf_init(struct qlcnic_adapter *, int); +int qlcnic_sriov_vf_init(struct qlcnic_adapter *); void qlcnic_sriov_vf_set_ops(struct qlcnic_adapter *); int qlcnic_sriov_func_to_index(struct qlcnic_adapter *, u8); void qlcnic_sriov_handle_bc_event(struct qlcnic_adapter *, u32); diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c index 42a44c97572a..9282321c2e7f 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_sriov_common.c @@ -525,8 +525,7 @@ static int qlcnic_sriov_vf_init_driver(struct qlcnic_adapter *adapter) return 0; } -static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter, - int pci_using_dac) +static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter) { int err; @@ -571,7 +570,7 @@ static int qlcnic_sriov_setup_vf(struct qlcnic_adapter *adapter, if (err) goto err_out_send_channel_term; - err = qlcnic_setup_netdev(adapter, adapter->netdev, pci_using_dac); + err = qlcnic_setup_netdev(adapter, adapter->netdev); if (err) goto err_out_send_channel_term; @@ -614,7 +613,7 @@ static int qlcnic_sriov_check_dev_ready(struct qlcnic_adapter *adapter) return 0; } -int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac) +int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter) { struct qlcnic_hardware_context *ahw = adapter->ahw; int err; @@ -631,7 +630,7 @@ int qlcnic_sriov_vf_init(struct qlcnic_adapter *adapter, int pci_using_dac) if (err) return err; - err = qlcnic_sriov_setup_vf(adapter, pci_using_dac); + err = qlcnic_sriov_setup_vf(adapter); if (err) return err;