Hi,
We found that the Broadcom 9460 RAID card will take ~40 seconds in
megasas_resume. It is mainly waiting for the FW to come to ready
state, please refer to the following kernel log. The FW version is
"megasas: 07.714.04.00-rc1". It seems that the
megasas_transition_to_ready() loop costs ~40 seconds in
megasas_resume. However, the same megasas_transition_to_ready()
function only takes a few milliseconds to complete in
megasas_init_fw(). The .read_fw_status_reg maps to
megasas_read_fw_status_reg_fusion. I tried to add
pci_enable_device_mem() and pci_set_master before
megasas_transition_to_ready() in megasas_resume() but it makes no
difference.
I don't really know what makes the difference between driver probe and
resume. The lspci information of the raid controller is here
https://gist.github.com/mschiu77/e74ec084cc925643add845fa4dc31ab6. Any
suggestions about what I can do to find out the cause? Thanks.
[ 62.357688] megaraid_sas 0000:45:00.0: megasas_resume is called
[ 62.357719] megaraid_sas 0000:45:00.0: Waiting for FW to come to ready state
[ 104.382571] megaraid_sas 0000:45:00.0: FW now in Ready state
[ 104.382576] megaraid_sas 0000:45:00.0: 63 bit DMA mask and 63 bit
consistent mask
[ 104.383350] megaraid_sas 0000:45:00.0: requested/available msix 33/33
[ 104.383669] megaraid_sas 0000:45:00.0: Performance mode :Latency
[ 104.383671] megaraid_sas 0000:45:00.0: FW supports sync cache : Yes
[ 104.383677] megaraid_sas 0000:45:00.0: megasas_disable_intr_fusion
is called outbound_intr_mask:0x40000009
[ 104.550570] megaraid_sas 0000:45:00.0: FW provided
supportMaxExtLDs: 1 max_lds: 64
[ 104.550574] megaraid_sas 0000:45:00.0: controller type : MR(4096MB)
[ 104.550575] megaraid_sas 0000:45:00.0: Online Controller Reset(OCR)
: Enabled
[ 104.550577] megaraid_sas 0000:45:00.0: Secure JBOD support : Yes
[ 104.550579] megaraid_sas 0000:45:00.0: NVMe passthru support : Yes
[ 104.550581] megaraid_sas 0000:45:00.0: FW provided TM
TaskAbort/Reset timeout : 6 secs/60 secs
[ 104.550583] megaraid_sas 0000:45:00.0: JBOD sequence map support : Yes
[ 104.550585] megaraid_sas 0000:45:00.0: PCI Lane Margining support : No
[ 104.550999] megaraid_sas 0000:45:00.0: megasas_enable_intr_fusion
is called outbound_intr_mask:0x40000000
Chris
