Commit 10cb4c23 authored by Jie Lei's avatar Jie Lei Committed by JangShui Yang
Browse files

hns3 udma: the SEG registration failure is rectified. 

driver inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8V1IQ


CVE: NA

--------------------------------------------------------

This patch fix the page size is automatically calculated when segs
are registered consecutively and the page size is not 4K aligned.

Fixes: 33e5598b ("hns3 udma: addressing stage adaptation")
Signed-off-by: default avatarJie Lei <leijie31@huawei.com>
Signed-off-by: default avatarWeibo Zhao <zhaoweibo3@huawei.com>
parent c7a8bada

drivers/ub/hw/hns3/hns3_udma_segment.c

+3 −13
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include "hns3_udma_cmd.h"

#include "hns3_udma_dfx.h"

#include "hns3_udma_eid.h"

#include "hns3_udma_dca.h"

#include "hns3_udma_segment.h"



static uint32_t hw_index_to_key(int ind)
@@ -91,23 +92,13 @@ static int alloc_seg_key(struct udma_dev *udma_dev, struct udma_seg *seg) 
	return err;

}



static uint64_t get_continuos_mem_size(uint64_t seg_addr)

{

#define HNS3_DOUBLE 2

	return seg_addr / HNS3_UDMA_KB * HNS3_DOUBLE;

}



static void get_pbl_addr_level(struct udma_seg *seg, struct udma_dev *udma_dev)

{

	uint64_t cont_mem_size;

	uint64_t seg_size;

	uint64_t page_num;



	if (seg->size <= SEG_MEM_SIZE_1G) {

	page_num = umem_cal_npages(seg->iova, seg->size);

	if (page_num <= UDMA_PAGE_SIZE_1G) {

		seg->pbl_hop_num = UDMA_PBL_HOP_NUM - 1U;

		seg_size = roundup_pow_of_two(seg->size);

		cont_mem_size = get_continuos_mem_size(seg_size);

		page_num = cont_mem_size / PAGE_SIZE;

		udma_dev->caps.pbl_ba_pg_sz = ilog2(roundup_pow_of_two(page_num));

	} else {

		seg->pbl_hop_num = udma_dev->caps.pbl_hop_num;
@@ -115,7 +106,6 @@ static void get_pbl_addr_level(struct udma_seg *seg, struct udma_dev *udma_dev) 
	}

}





static int alloc_seg_pbl(struct udma_dev *udma_dev, struct udma_seg *seg,

			 bool is_user)

{

drivers/ub/hw/hns3/hns3_udma_segment.h

+1 −2
Original line number Diff line number Diff line
@@ -28,8 +28,7 @@ 
#define PA_PAGE_SHIFT		6

#define MPT_VA_H_SHIFT		32

#define MPT_LEN_H_SHIFT		32

#define HNS3_UDMA_KB		0x400

#define SEG_MEM_SIZE_1G		0X40000000 // 1GB

#define UDMA_PAGE_SIZE_1G	0x40000 // 1GB page size



enum {

	MPT_ST_VALID = 0x1,