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i40iw: Use utility function roundup_pow_of_two() 

Consolidate all power of 2 round calculations to
use kernel utility function roundup_pow_of_two().

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Shiraz Saleem 2017-12-22 09:46:55 -06:00 committed by Jason Gunthorpe
parent f32b766cf7
commit 8758768ad8
3 changed files with 7 additions and 33 deletions
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7
drivers/infiniband/hw/i40iw/i40iw_cm.c
View File

@ -92,14 +92,9 @@ void i40iw_free_sqbuf(struct i40iw_sc_vsi *vsi, void *bufp)
static u8 i40iw_derive_hw_ird_setting(u16 cm_ird)
{
u8 encoded_ird_size;
u8 pof2_cm_ird = 1;
/* round-off to next powerof2 */
while (pof2_cm_ird < cm_ird)
pof2_cm_ird *= 2;
/* ird_size field is encoded in qp_ctx */
switch (pof2_cm_ird) {
switch (cm_ird ? roundup_pow_of_two(cm_ird) : 0) {
case I40IW_HW_IRD_SETTING_64:
encoded_ird_size = 3;
break;

15
drivers/infiniband/hw/i40iw/i40iw_ctrl.c
View File

@ -3855,7 +3855,6 @@ enum i40iw_status_code i40iw_config_fpm_values(struct i40iw_sc_dev *dev, u32 qp_
struct i40iw_virt_mem virt_mem;
u32 i, mem_size;
u32 qpwantedoriginal, qpwanted, mrwanted, pblewanted;
u32 powerof2;
u64 sd_needed;
u32 loop_count = 0;
@ -3928,16 +3927,10 @@ enum i40iw_status_code i40iw_config_fpm_values(struct i40iw_sc_dev *dev, u32 qp_
if ((loop_count > 1000) ||
((!(loop_count % 10)) &&
(qpwanted > qpwantedoriginal * 2 / 3))) {
if (qpwanted > FPM_MULTIPLIER) {
qpwanted -= FPM_MULTIPLIER;
powerof2 = 1;
while (powerof2 < qpwanted)
powerof2 *= 2;
powerof2 /= 2;
qpwanted = powerof2;
} else {
qpwanted /= 2;
}
if (qpwanted > FPM_MULTIPLIER)
qpwanted = roundup_pow_of_two(qpwanted -
FPM_MULTIPLIER);
qpwanted >>= 1;
}
if (mrwanted > FPM_MULTIPLIER * 10)
mrwanted -= FPM_MULTIPLIER * 10;

18
drivers/infiniband/hw/i40iw/i40iw_uk.c
View File

@ -893,20 +893,6 @@ exit:
return ret_code;
}
/**
* i40iw_qp_roundup - return round up QP WQ depth
* @wqdepth: WQ depth in quantas to round up
*/
static int i40iw_qp_round_up(u32 wqdepth)
{
int scount = 1;
for (wqdepth--; scount <= 16; scount *= 2)
wqdepth |= wqdepth >> scount;
return ++wqdepth;
}
/**
* i40iw_get_wqe_shift - get shift count for maximum wqe size
* @sge: Maximum Scatter Gather Elements wqe
@ -934,7 +920,7 @@ void i40iw_get_wqe_shift(u32 sge, u32 inline_data, u8 *shift)
*/
enum i40iw_status_code i40iw_get_sqdepth(u32 sq_size, u8 shift, u32 *sqdepth)
{
*sqdepth = i40iw_qp_round_up((sq_size << shift) + I40IW_SQ_RSVD);
*sqdepth = roundup_pow_of_two((sq_size << shift) + I40IW_SQ_RSVD);
if (*sqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift))
*sqdepth = I40IW_QP_SW_MIN_WQSIZE << shift;
@ -953,7 +939,7 @@ enum i40iw_status_code i40iw_get_sqdepth(u32 sq_size, u8 shift, u32 *sqdepth)
*/
enum i40iw_status_code i40iw_get_rqdepth(u32 rq_size, u8 shift, u32 *rqdepth)
{
*rqdepth = i40iw_qp_round_up((rq_size << shift) + I40IW_RQ_RSVD);
*rqdepth = roundup_pow_of_two((rq_size << shift) + I40IW_RQ_RSVD);
if (*rqdepth < (I40IW_QP_SW_MIN_WQSIZE << shift))
*rqdepth = I40IW_QP_SW_MIN_WQSIZE << shift;