From cab9aff8c76fd34fdc252eba90ee1bb016c5829b Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Tue, 2 Aug 2016 16:56:12 +0530 Subject: [PATCH] net: thunderx: Add support for 16 LMACs of 83xx 83xx will have 4 BGX blocks i.e 16 LMACs, to avoid changing the same with every platform, nicpf struct elements which track LMAC related info are now allocated runtime based on platform's max possible BGX count. Signed-off-by: Sunil Goutham --- drivers/net/ethernet/cavium/thunder/nic_main.c | 61 ++++++++++++++++++----- drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 2 - 2 files changed, 49 insertions(+), 14 deletions(-) diff --git a/drivers/net/ethernet/cavium/thunder/nic_main.c b/drivers/net/ethernet/cavium/thunder/nic_main.c index 74bb811..0139186 100644 --- a/drivers/net/ethernet/cavium/thunder/nic_main.c +++ b/drivers/net/ethernet/cavium/thunder/nic_main.c @@ -53,12 +53,12 @@ struct nicpf { #define NIC_SET_VF_LMAC_MAP(bgx, lmac) (((bgx & 0xF) << 4) | (lmac & 0xF)) #define NIC_GET_BGX_FROM_VF_LMAC_MAP(map) ((map >> 4) & 0xF) #define NIC_GET_LMAC_FROM_VF_LMAC_MAP(map) (map & 0xF) - u8 vf_lmac_map[MAX_LMAC]; + u8 *vf_lmac_map; struct delayed_work dwork; struct workqueue_struct *check_link; - u8 link[MAX_LMAC]; - u8 duplex[MAX_LMAC]; - u32 speed[MAX_LMAC]; + u8 *link; + u8 *duplex; + u32 *speed; u16 cpi_base[MAX_NUM_VFS_SUPPORTED]; u16 rssi_base[MAX_NUM_VFS_SUPPORTED]; bool mbx_lock[MAX_NUM_VFS_SUPPORTED]; @@ -185,7 +185,7 @@ static void nic_mbx_send_ready(struct nicpf *nic, int vf) mbx.nic_cfg.sqs_mode = (vf >= nic->num_vf_en) ? true : false; mbx.nic_cfg.node_id = nic->node; - mbx.nic_cfg.loopback_supported = vf < MAX_LMAC; + mbx.nic_cfg.loopback_supported = vf < nic->num_vf_en; nic_send_msg_to_vf(nic, vf, &mbx); } @@ -336,8 +336,17 @@ static void nic_set_lmac_vf_mapping(struct nicpf *nic) } } -static void nic_get_hw_info(struct nicpf *nic) +static void nic_free_lmacmem(struct nicpf *nic) { + kfree(nic->vf_lmac_map); + kfree(nic->link); + kfree(nic->duplex); + kfree(nic->speed); +} + +static int nic_get_hw_info(struct nicpf *nic) +{ + u8 max_lmac; u16 sdevid; struct hw_info *hw = nic->hw; @@ -385,18 +394,40 @@ static void nic_get_hw_info(struct nicpf *nic) break; } hw->tl4_cnt = MAX_QUEUES_PER_QSET * pci_sriov_get_totalvfs(nic->pdev); + + /* Allocate memory for LMAC tracking elements */ + max_lmac = hw->bgx_cnt * MAX_LMAC_PER_BGX; + nic->vf_lmac_map = kmalloc_array(max_lmac, sizeof(u8), GFP_KERNEL); + if (!nic->vf_lmac_map) + goto error; + nic->link = kmalloc_array(max_lmac, sizeof(u8), GFP_KERNEL); + if (!nic->link) + goto error; + nic->duplex = kmalloc_array(max_lmac, sizeof(u8), GFP_KERNEL); + if (!nic->duplex) + goto error; + nic->speed = kmalloc_array(max_lmac, sizeof(u32), GFP_KERNEL); + if (!nic->speed) + goto error; + return 0; + +error: + nic_free_lmacmem(nic); + return -ENOMEM; } #define BGX0_BLOCK 8 #define BGX1_BLOCK 9 -static void nic_init_hw(struct nicpf *nic) +static int nic_init_hw(struct nicpf *nic) { - int i; + int i, err; u64 cqm_cfg; /* Get HW capability info */ - nic_get_hw_info(nic); + err = nic_get_hw_info(nic); + if (err) + return err; /* Enable NIC HW block */ nic_reg_write(nic, NIC_PF_CFG, 0x3); @@ -442,6 +473,8 @@ static void nic_init_hw(struct nicpf *nic) cqm_cfg = nic_reg_read(nic, NIC_PF_CQM_CFG); if (cqm_cfg < NICPF_CQM_MIN_DROP_LEVEL) nic_reg_write(nic, NIC_PF_CQM_CFG, NICPF_CQM_MIN_DROP_LEVEL); + + return 0; } /* Channel parse index configuration */ @@ -741,7 +774,7 @@ static int nic_config_loopback(struct nicpf *nic, struct set_loopback *lbk) { int bgx_idx, lmac_idx; - if (lbk->vf_id > MAX_LMAC) + if (lbk->vf_id >= nic->num_vf_en) return -1; bgx_idx = NIC_GET_BGX_FROM_VF_LMAC_MAP(nic->vf_lmac_map[lbk->vf_id]); @@ -837,7 +870,7 @@ static void nic_handle_mbx_intr(struct nicpf *nic, int vf) switch (mbx.msg.msg) { case NIC_MBOX_MSG_READY: nic_mbx_send_ready(nic, vf); - if (vf < MAX_LMAC) { + if (vf < nic->num_vf_en) { nic->link[vf] = 0; nic->duplex[vf] = 0; nic->speed[vf] = 0; @@ -1240,7 +1273,9 @@ static int nic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) nic->node = nic_get_node_id(pdev); /* Initialize hardware */ - nic_init_hw(nic); + err = nic_init_hw(nic); + if (err) + goto err_release_regions; nic_set_lmac_vf_mapping(nic); @@ -1275,6 +1310,7 @@ err_unregister_interrupts: err_release_regions: pci_release_regions(pdev); err_disable_device: + nic_free_lmacmem(nic); devm_kfree(dev, nic->hw); devm_kfree(dev, nic); pci_disable_device(pdev); @@ -1298,6 +1334,7 @@ static void nic_remove(struct pci_dev *pdev) nic_unregister_interrupts(nic); pci_release_regions(pdev); + nic_free_lmacmem(nic); devm_kfree(&pdev->dev, nic->hw); devm_kfree(&pdev->dev, nic); diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h index 6225ff4..c7d7cc6 100644 --- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h +++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h @@ -29,8 +29,6 @@ #define MAX_DMAC_PER_LMAC_TNS_BYPASS_MODE 2 -#define MAX_LMAC (MAX_BGX_PER_CN88XX * MAX_LMAC_PER_BGX) - /* Registers */ #define BGX_CMRX_CFG 0x00 #define CMR_PKT_TX_EN BIT_ULL(13) -- 2.7.4