Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 107392b7 authored by Ram Amrani's avatar Ram Amrani Committed by David S. Miller
Browse files

qed: align DPI configuration to HW requirements 



When calculating doorbell BAR partitioning round up the number of
CPUs to the nearest power of 2 so the size of the DPI (per user
section) configured in the hardware will be stored properly and
not truncated.

Signed-off-by: default avatarRam Amrani <Ram.Amrani@cavium.com>
Signed-off-by: default avatarYuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e015d58b

drivers/net/ethernet/qlogic/qed/qed.h

+1 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ extern const struct qed_common_ops qed_common_ops_pass; 
#define QED_WFQ_UNIT	100



#define QED_WID_SIZE            (1024)

#define QED_MIN_WIDS		(4)

#define QED_PF_DEMS_SIZE        (4)



/* cau states */

drivers/net/ethernet/qlogic/qed/qed_dev.c

+5 −7
Original line number Diff line number Diff line
@@ -1318,17 +1318,15 @@ static int 
qed_hw_init_dpi_size(struct qed_hwfn *p_hwfn,

		     struct qed_ptt *p_ptt, u32 pwm_region_size, u32 n_cpus)

{

	u32 dpi_page_size_1, dpi_page_size_2, dpi_page_size;

	u32 dpi_bit_shift, dpi_count;

	u32 dpi_bit_shift, dpi_count, dpi_page_size;

	u32 min_dpis;

	u32 n_wids;



	/* Calculate DPI size */

	dpi_page_size_1 = QED_WID_SIZE * n_cpus;

	dpi_page_size_2 = max_t(u32, QED_WID_SIZE, PAGE_SIZE);

	dpi_page_size = max_t(u32, dpi_page_size_1, dpi_page_size_2);

	dpi_page_size = roundup_pow_of_two(dpi_page_size);

	n_wids = max_t(u32, QED_MIN_WIDS, n_cpus);

	dpi_page_size = QED_WID_SIZE * roundup_pow_of_two(n_wids);

	dpi_page_size = (dpi_page_size + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1);

	dpi_bit_shift = ilog2(dpi_page_size / 4096);



	dpi_count = pwm_region_size / dpi_page_size;



	min_dpis = p_hwfn->pf_params.rdma_pf_params.min_dpis;