From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vipul Pandya Subject: [PATCH v2 net-next 10/22] cxgb4: Disable SR-IOV support for PF4-7 for T5 Date: Thu, 14 Mar 2013 20:38:56 +0530 Message-ID: <1363273748-25330-11-git-send-email-vipul@chelsio.com> References: <1363273748-25330-1-git-send-email-vipul@chelsio.com> Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org, roland-BHEL68pLQRGGvPXPguhicg@public.gmane.org, JBottomley-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org, dm-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org, leedom-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, naresh-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, divy-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, santosh-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, arvindb-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, abhishek-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org, vipul-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-scsi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Return-path: In-Reply-To: <1363273748-25330-1-git-send-email-vipul-ut6Up61K2wZBDgjK7y7TUQ@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org From: Santosh Rastapur All T5 adapters will only support VFs on PF0-3 despite the ability of the hardware to support them on PF4-7. This keeps our T4 and T5 adapters more similar which simplifies host driver software. Signed-off-by: Vipul Pandya --- v2: Replaced #ifdef with portable interface wmb in ring_tx_db drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 8 ++++---- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 21 ++++++--------------- 2 files changed, 10 insertions(+), 19 deletions(-) diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 45b18bd..681804b 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -534,11 +534,11 @@ enum chip_type { #ifdef CONFIG_PCI_IOV -/* T4 - 4 PFs support SRIOV - * T5 - 8 PFs support SRIOV +/* T4 supports SRIOV on PF0-3 and T5 on PF0-7. However, the Serial + * Configuration initialization for T5 only has SR-IOV functionality enabled + * on PF0-3 in order to simplify everything. */ -#define NUM_OF_PF_WITH_SRIOV_T4 4 -#define NUM_OF_PF_WITH_SRIOV_T5 8 +#define NUM_OF_PF_WITH_SRIOV 4 #endif diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c index c502e36..a59bb23 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c @@ -360,14 +360,13 @@ static bool vf_acls; module_param(vf_acls, bool, 0644); MODULE_PARM_DESC(vf_acls, "if set enable virtualization L2 ACL enforcement"); -/* Since T5 has more num of PFs, using NUM_OF_PF_WITH_SRIOV_T5 - * macro as num_vf array size +/* Configure the number of PCI-E Virtual Function which are to be instantiated + * on SR-IOV Capable Physical Functions. */ -static unsigned int num_vf[NUM_OF_PF_WITH_SRIOV_T5]; +static unsigned int num_vf[NUM_OF_PF_WITH_SRIOV]; module_param_array(num_vf, uint, NULL, 0644); -MODULE_PARM_DESC(num_vf, - "number of VFs for each of PFs 0-3 for T4 and PFs 0-7 for T5"); +MODULE_PARM_DESC(num_vf, "number of VFs for each of PFs 0-3"); #endif /* @@ -4633,10 +4632,8 @@ static int adap_init0_no_config(struct adapter *adapter, int reset) */ { int pf, vf; - int max_no_pf = is_t4(adapter->chip) ? NUM_OF_PF_WITH_SRIOV_T4 : - NUM_OF_PF_WITH_SRIOV_T5; - for (pf = 0; pf < max_no_pf; pf++) { + for (pf = 0; pf < ARRAY_SIZE(num_vf); pf++) { if (num_vf[pf] <= 0) continue; @@ -5483,9 +5480,6 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) struct port_info *pi; bool highdma = false; struct adapter *adapter = NULL; -#ifdef CONFIG_PCI_IOV - int max_no_pf; -#endif printk_once(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION); @@ -5704,10 +5698,7 @@ static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent) sriov: #ifdef CONFIG_PCI_IOV - max_no_pf = is_t4(adapter->chip) ? NUM_OF_PF_WITH_SRIOV_T4 : - NUM_OF_PF_WITH_SRIOV_T5; - - if (func < max_no_pf && num_vf[func] > 0) + if (func < ARRAY_SIZE(num_vf) && num_vf[func] > 0) if (pci_enable_sriov(pdev, num_vf[func]) == 0) dev_info(&pdev->dev, "instantiated %u virtual functions\n", -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html