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qed: Add aux. function translating sb_id -> igu_sb_id 

An additional step for relaxing the IGU order assumption, we now add
an auxiliary function that can be used for finding the HW status block
that's associated with a given MSI-x vector.

Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mintz, Yuval 2017-06-01 15:29:05 +03:00 committed by David S. Miller
parent d031548e91
commit a333f7f3fd
1 changed files with 21 additions and 10 deletions
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31
drivers/net/ethernet/qlogic/qed/qed_int.c
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@ -1412,15 +1412,26 @@ void qed_int_sb_setup(struct qed_hwfn *p_hwfn,
sb_info->igu_sb_id, 0, 0);
}
/**
* @brief qed_get_igu_sb_id - given a sw sb_id return the
* igu_sb_id
*
* @param p_hwfn
* @param sb_id
*
* @return u16
*/
static u16 qed_get_pf_igu_sb_id(struct qed_hwfn *p_hwfn, u16 vector_id)
{
struct qed_igu_block *p_block;
u16 igu_id;
for (igu_id = 0; igu_id < QED_MAPPING_MEMORY_SIZE(p_hwfn->cdev);
igu_id++) {
p_block = &p_hwfn->hw_info.p_igu_info->entry[igu_id];
if (!(p_block->status & QED_IGU_STATUS_VALID) ||
!p_block->is_pf ||
p_block->vector_number != vector_id)
continue;
return igu_id;
}
return QED_SB_INVALID_IDX;
}
static u16 qed_get_igu_sb_id(struct qed_hwfn *p_hwfn, u16 sb_id)
{
u16 igu_sb_id;
@ -1429,7 +1440,7 @@ static u16 qed_get_igu_sb_id(struct qed_hwfn *p_hwfn, u16 sb_id)
if (sb_id == QED_SP_SB_ID)
igu_sb_id = p_hwfn->hw_info.p_igu_info->igu_dsb_id;
else if (IS_PF(p_hwfn->cdev))
igu_sb_id = sb_id + p_hwfn->hw_info.p_igu_info->igu_base_sb;
igu_sb_id = qed_get_pf_igu_sb_id(p_hwfn, sb_id + 1);
else
igu_sb_id = qed_vf_get_igu_sb_id(p_hwfn, sb_id);