RK3568 系统
移植展锐UWM2651 WIFI驱动 ，驱动加载出现 dma_mapping_error ，期望能给出有效的分析思路。附上部分日志。#[ 38.477914] sc2355 sprd-wlan:sprdwl_probe Power on wcn (0 time)
#[ 38.477965] WCN BASE: : start_marlin
#[ 38.477979] WCN BASE: : marlin power state:0x100, subsys: power 1
#[ 38.477991] WCN BASE: : GNSS and marlin have ready
#[ 38.478006] WCN BASE: : only one module open, need to notify loopcheck
#[ 38.478018] WCN BASE: : start_loopcheck
#[ 38.478046] sc2355 sprd-wlan:__sprdwl_cmd_getbuf cant't get vif, ctx_id: 0
#[ 38.478063] cmd get buf ftr
#[ 38.478081] sc2355 sprd-wlan:cmd->refcnt=1
#[ 38.478096] sc2355 sprd-wlan:ctx_id 0 send
#[ 38.478108] sc2355 sprd-wlan:sprdwl_tx_msg_func
#[ 38.478137] sc2355 sprd-wlan:sprdwl_timeout_recv_rsp, completion begin=0X0
#[ 38.478159] if_tx_one
#[ 38.478189] WCN PCIE dbg: pool=000000004b5442b8, chn=4, free=10
#[ 38.478203] sc2355 sprdwl-wlan tx to cp2 cmd data dump hex dump(len = 272)
#[ 38.478212] 91 95 00 00 00 00 00 00 01 00 00 00 01 02 01 01
#[ 38.478226] 01 01 01 01 01 01 01 03 01 01 01 01 01 01 01 01
#[ 38.478238] 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01 01
#[ 38.478250] 01 01 01 01 01 01 00 00 00 00 00 00 00 00 00 00
#[ 38.478261] 00 00 00 00 01 01 01 01 01 01 01 01 01 01 01 01
#[ 38.478272] 01 01 01 01 01 01 01 01 01 01 01 01 01 00 01 00
#[ 38.478284] 01 01 00 00 00 01 00 00 00 00 00 00 00 00 00 00
#[ 38.478295] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#[ 38.478307] 00 00 00 00 00 00 00 00 00 00 00 00 01 01 01 01
#[ 38.478318] 01 01 01 00 01 01 00 00 00 00 00 00 00 00 00 00
#[ 38.478408] 00 00 00 00 00 00 00 00 00 00 00 00 01 01 00 00
#[ 38.478423] 00 00 00 00 00 00 00 00 00 00 00 00 01 01 01 01
#[ 38.478432] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#[ 38.478441] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#[ 38.478452] 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
#[ 38.478464] 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 01
#[ 38.478475] 01 01 01 01 01 00 00 00 00 00 00 00 00 00 00 00
#[ 38.478505] dma mapping error
#[ 38.483387] dma map single attrs addr 00000000c3dfbd96 size 272 dir 1
#[ 38.483393] dma mapping error
#[ 38.483401] sc2355 sprd-wlan:mm_virt_to_phys: dma_mapping_error
#[ 38.483411] dma map single addr 00000000c3dfbd96 size 272 direction 1
#[ 38.483413] dma map single attrs addr 00000000c3dfbd96 size 272 dir 1
#[ 38.483422] dma mapping error
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