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cxgb4: Disable SR-IOV support for PF4-7 for T5

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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 <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Santosh Rastapur 2013-03-14 05:08:56 +00:00 committed by David S. Miller
parent 3a7f85540d
commit 7d6727cfe5
2 changed files with 10 additions and 19 deletions
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8
drivers/net/ethernet/chelsio/cxgb4/cxgb4.h
View File

@ -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

21
drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
View File

@ -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",