/* Function to check number of LMACs present and set VF::LMAC mapping.
* Mapping will be used while initializing channels.
*/
static void nic_set_lmac_vf_mapping(struct nicpf *nic)
{
unsigned bgx_map = bgx_get_map(nic->node);
int bgx, next_bgx_lmac = 0;
int lmac, lmac_cnt = 0;
u64 lmac_credit;
nic->num_vf_en = 0;
for (bgx = 0; bgx < NIC_MAX_BGX; bgx++) {
if (!(bgx_map & (1 << bgx)))
continue;
lmac_cnt = bgx_get_lmac_count(nic->node, bgx);
for (lmac = 0; lmac < lmac_cnt; lmac++)
nic->vf_lmac_map[next_bgx_lmac++] =
NIC_SET_VF_LMAC_MAP(bgx, lmac);
nic->num_vf_en += lmac_cnt;
/* Program LMAC credits */
lmac_credit = (1ull << 1); /* channel credit enable */
lmac_credit |= (0x1ff << 2); /* Max outstanding pkt count */
/* 48KB BGX Tx buffer size, each unit is of size 16bytes */
lmac_credit |= (((((48 * 1024) / lmac_cnt) -
NIC_HW_MAX_FRS) / 16) << 12);
lmac = bgx * MAX_LMAC_PER_BGX;
for (; lmac < lmac_cnt + (bgx * MAX_LMAC_PER_BGX); lmac++)
nic_reg_write(nic,
NIC_PF_LMAC_0_7_CREDIT + (lmac * 8),
lmac_credit);
}
}
/* Function to check number of LMACs present and set VF::LMAC mapping.
* Mapping will be used while initializing channels.
*/
static void nic_set_lmac_vf_mapping(struct nicpf *nic)
{
unsigned bgx_map = bgx_get_map(nic->node);
int bgx, next_bgx_lmac = 0;
int lmac, lmac_cnt = 0;
u64 lmac_credit;
nic->num_vf_en = 0;
for (bgx = 0; bgx < nic->hw->bgx_cnt; bgx++) {
if (!(bgx_map & (1 << bgx)))
continue;
lmac_cnt = bgx_get_lmac_count(nic->node, bgx);
for (lmac = 0; lmac < lmac_cnt; lmac++)
nic->vf_lmac_map[next_bgx_lmac++] =
NIC_SET_VF_LMAC_MAP(bgx, lmac);
nic->num_vf_en += lmac_cnt;
/* Program LMAC credits */
lmac_credit = (1ull << 1); /* channel credit enable */
lmac_credit |= (0x1ff << 2); /* Max outstanding pkt count */
/* 48KB BGX Tx buffer size, each unit is of size 16bytes */
lmac_credit |= (((((48 * 1024) / lmac_cnt) -
NIC_HW_MAX_FRS) / 16) << 12);
lmac = bgx * MAX_LMAC_PER_BGX;
for (; lmac < lmac_cnt + (bgx * MAX_LMAC_PER_BGX); lmac++)
nic_reg_write(nic,
NIC_PF_LMAC_0_7_CREDIT + (lmac * 8),
lmac_credit);
/* On CN81XX there are only 8 VFs but max possible no of
* interfaces are 9.
*/
if (nic->num_vf_en >= pci_sriov_get_totalvfs(nic->pdev)) {
nic->num_vf_en = pci_sriov_get_totalvfs(nic->pdev);
break;
}
}
}
