Re: 答复: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
On 2020-11-12 06:48 PM, Carl Yin wrote:
Hi bbhatt:
On November 04, 2020 1:32 AM, bbhatt wrote:
On 2020-11-02 17:47, Carl Yin wrote:
> Hi bbhatt:
>
> On November 03, 2020 12:34 AM, Bhatt wrote:
>> On 2020-11-02 04:27, carl@quectel.com wrote:
>> > From: "carl.yin"
>> >
>> > MHI wwan modems support download firmware to nand or emmc by
>> > firehose protocol, process as next:
>> > 1. modem boot up and enter EE AMSS, create DIAG channels (4, 5)
>> > device 2. user space tool send EDL command via DIAG channel,
>> >then modem enter EE EDL
>> > 3. boot.c download 'flash programmer image' via BHI interface 4.
>> > modem enter EE FP, and create EDL channels (34, 35) device 5. user
>> > space tool download 'firmware image' to modem via EDL channels
>> >by firehose protocol
>> >
>> > Signed-off-by: carl.yin
[carl.yin] can you give some advice one above commit message? I am
afraid it is clear and brief.
Sure. Can we sync-up on a separate thread to work on this patch?
>> > ---
>> > drivers/bus/mhi/core/init.c | 2 ++
>> > drivers/bus/mhi/core/internal.h | 1 +
>> > drivers/bus/mhi/core/main.c | 5 -
>> > drivers/bus/mhi/core/pm.c | 13 -
>> > include/linux/mhi.h | 4 +++-
>> > 5 files changed, 22 insertions(+), 3 deletions(-)
>> >
>> > diff --git a/drivers/bus/mhi/core/init.c
>> > b/drivers/bus/mhi/core/init.c index ac4aa5c..e34616b 100644
>> > --- a/drivers/bus/mhi/core/init.c
>> > +++ b/drivers/bus/mhi/core/init.c
>> > @@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
>> > [MHI_EE_WFW] = "WFW",
>> > [MHI_EE_PTHRU] = "PASS THRU",
>> > [MHI_EE_EDL] = "EDL",
>> > + [MHI_EE_FP] = "FLASH PROGRAMMER",
>> > [MHI_EE_DISABLE_TRANSITION] = "DISABLE",
>> > [MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED", }; @@ -35,6 +36,7
@@
>> > const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
>> > [DEV_ST_TRANSITION_READY] = "READY",
>> > [DEV_ST_TRANSITION_SBL] = "SBL",
>> > [DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
>> > + [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
>> > [DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
>> > [DEV_ST_TRANSITION_DISABLE] = "DISABLE", }; diff --git
>> > a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
>> > index 4abf0cf..6ae897a 100644
>> > --- a/drivers/bus/mhi/core/internal.h
>> > +++ b/drivers/bus/mhi/core/internal.h
>> > @@ -386,6 +386,7 @@ enum dev_st_transition {
>> > DEV_ST_TRANSITION_READY,
>> > DEV_ST_TRANSITION_SBL,
>> > DEV_ST_TRANSITION_MISSION_MODE,
>> > + DEV_ST_TRANSITION_FP,
>> > DEV_ST_TRANSITION_SYS_ERR,
>> > DEV_ST_TRANSITION_DISABLE,
>> > DEV_ST_TRANSITION_MAX,
>> > diff --git a/drivers/bus/mhi/core/main.c
>> > b/drivers/bus/mhi/core/main.c index 3950792..a1e1561 100644
>> > --- a/drivers/bus/mhi/core/main.c
>> > +++ b/drivers/bus/mhi/core/main.c
>> > @@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
>> > irq_number, void *priv)
>> > wake_up_all(_cntrl->state_event);
>> >
>> > /* For fatal errors, we let controller decide next step */
>> > - if (MHI_IN_PBL(ee))
>> > + if (MHI_IN_PBL(mhi_cntrl->ee))
>> Let's please have this as a separate patch with a fixes tag, as it
>> fixes a pre-existing bug. I am sure Mani would want this.
[carl.yin] should I wait this bug fixed, then submit patch v3?
I have introduced a fix for this, added you in CC, and waiting for
Mani's review.
It would be nice if you could wait until that is picked.
>> > mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
>> > else
>> > mhi_pm_sys_err_handler(mhi_cntrl);
>> > @@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct
>> > mhi_controller *mhi_cntrl,
>> > case MHI_EE_SBL:
>> > st = DEV_ST_TRANSITION_SBL;
>> > break;
>> > + case MHI_EE_FP:
>> > + st = DEV_ST_TRANSITION_FP;
>> > + break;
>> When do you get this EE event on the control event ring? Does it come
>> by after you have detected EE as FP from mhi_sync_power_up() and move
>> to ready and then M0?
> [carl.yin] it is from the log, next is the sdx24's log.
> Another thing, I find mhi controller's status_cb() should not directly
> call mhi_power_down(), The function stack is
>
mhi_intvec_threaded_handler()->status_cb()->mhi_power_down()->free_irq().
> Should not free irq in the irq thread.
>
> [ 304.263111] mhi :03:00.0: Preparing channel: 4 [ 304.275580]
> mhi :03:00.0: Chan: 4 successfully moved to start state [
> 304.275580] mhi :03:00.0: Preparing channel: 5 [ 304.285901] mhi
> :03:00.0: Chan: 5 successfully moved to start state [ 307.380999]
> mhi :03:00.0: local ee:EDL device ee:AMSS dev_state:SYS_ERR [
> 307.381000] mhi :03:00.0: System error detected [ 307.381001]
> mhi-pci-generic :03:00.0: mhi_pci_status_cb ee=6,
> cb=7
> [ 307.381006] mhi
Re: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
On Mon, Nov 02, 2020 at 08:34:14AM -0800, Bhaumik Bhatt wrote:
> On 2020-11-02 04:27, carl@quectel.com wrote:
> > From: "carl.yin"
> >
> > MHI wwan modems support download firmware to nand or emmc
> > by firehose protocol, process as next:
> > 1. modem boot up and enter EE AMSS, create DIAG channels (4, 5) device
> > 2. user space tool send EDL command via DIAG channel,
> >then modem enter EE EDL
> > 3. boot.c download 'flash programmer image' via BHI interface
> > 4. modem enter EE FP, and create EDL channels (34, 35) device
> > 5. user space tool download 'firmware image' to modem via EDL channels
> >by firehose protocol
> >
> > Signed-off-by: carl.yin
> > ---
> > drivers/bus/mhi/core/init.c | 2 ++
> > drivers/bus/mhi/core/internal.h | 1 +
> > drivers/bus/mhi/core/main.c | 5 -
> > drivers/bus/mhi/core/pm.c | 13 -
> > include/linux/mhi.h | 4 +++-
> > 5 files changed, 22 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
> > index ac4aa5c..e34616b 100644
> > --- a/drivers/bus/mhi/core/init.c
> > +++ b/drivers/bus/mhi/core/init.c
> > @@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
> > [MHI_EE_WFW] = "WFW",
> > [MHI_EE_PTHRU] = "PASS THRU",
> > [MHI_EE_EDL] = "EDL",
> > + [MHI_EE_FP] = "FLASH PROGRAMMER",
> > [MHI_EE_DISABLE_TRANSITION] = "DISABLE",
> > [MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED",
> > };
> > @@ -35,6 +36,7 @@ const char * const
> > dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
> > [DEV_ST_TRANSITION_READY] = "READY",
> > [DEV_ST_TRANSITION_SBL] = "SBL",
> > [DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
> > + [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
> > [DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
> > [DEV_ST_TRANSITION_DISABLE] = "DISABLE",
> > };
> > diff --git a/drivers/bus/mhi/core/internal.h
> > b/drivers/bus/mhi/core/internal.h
> > index 4abf0cf..6ae897a 100644
> > --- a/drivers/bus/mhi/core/internal.h
> > +++ b/drivers/bus/mhi/core/internal.h
> > @@ -386,6 +386,7 @@ enum dev_st_transition {
> > DEV_ST_TRANSITION_READY,
> > DEV_ST_TRANSITION_SBL,
> > DEV_ST_TRANSITION_MISSION_MODE,
> > + DEV_ST_TRANSITION_FP,
> > DEV_ST_TRANSITION_SYS_ERR,
> > DEV_ST_TRANSITION_DISABLE,
> > DEV_ST_TRANSITION_MAX,
> > diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
> > index 3950792..a1e1561 100644
> > --- a/drivers/bus/mhi/core/main.c
> > +++ b/drivers/bus/mhi/core/main.c
> > @@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
> > irq_number, void *priv)
> > wake_up_all(_cntrl->state_event);
> >
> > /* For fatal errors, we let controller decide next step */
> > - if (MHI_IN_PBL(ee))
> > + if (MHI_IN_PBL(mhi_cntrl->ee))
> Let's please have this as a separate patch with a fixes tag, as it fixes a
> pre-existing bug. I am sure Mani would want this.
Yes. It is not recommended to club changes like this onto a single patch.
Thanks,
Mani
> > mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
> > else
> > mhi_pm_sys_err_handler(mhi_cntrl);
> > @@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller
> > *mhi_cntrl,
> > case MHI_EE_SBL:
> > st = DEV_ST_TRANSITION_SBL;
> > break;
> > + case MHI_EE_FP:
> > + st = DEV_ST_TRANSITION_FP;
> > + break;
> When do you get this EE event on the control event ring? Does it come by
> after you
> have detected EE as FP from mhi_sync_power_up() and move to ready and then
> M0?
> > case MHI_EE_WFW:
> > case MHI_EE_AMSS:
> > st = DEV_ST_TRANSITION_MISSION_MODE;
> > diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
> > index 3de7b16..2d68812 100644
> > --- a/drivers/bus/mhi/core/pm.c
> > +++ b/drivers/bus/mhi/core/pm.c
> > @@ -658,6 +658,12 @@ void mhi_pm_st_worker(struct work_struct *work)
> > case DEV_ST_TRANSITION_MISSION_MODE:
> > mhi_pm_mission_mode_transition(mhi_cntrl);
> > break;
> > + case DEV_ST_TRANSITION_FP:
> > + write_lock_irq(_cntrl->pm_lock);
> > + mhi_cntrl->ee = MHI_EE_FP;
> > + write_unlock_irq(_cntrl->pm_lock);
> > + mhi_create_devices(mhi_cntrl);
> > + break;
> > case DEV_ST_TRANSITION_READY:
> > mhi_ready_state_transition(mhi_cntrl);
> > break;
> > @@ -1077,10 +1083,15 @@ int mhi_sync_power_up(struct mhi_controller
> > *mhi_cntrl)
> >
> > wait_event_timeout(mhi_cntrl->state_event,
> >MHI_IN_MISSION_MODE(mhi_cntrl->ee) ||
> > +
答复: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
Hi bbhatt:
On November 04, 2020 1:32 AM, bbhatt wrote:
> On 2020-11-02 17:47, Carl Yin wrote:
> > Hi bbhatt:
> >
> > On November 03, 2020 12:34 AM, Bhatt wrote:
> >> On 2020-11-02 04:27, carl@quectel.com wrote:
> >> > From: "carl.yin"
> >> >
> >> > MHI wwan modems support download firmware to nand or emmc by
> >> > firehose protocol, process as next:
> >> > 1. modem boot up and enter EE AMSS, create DIAG channels (4, 5)
> >> > device 2. user space tool send EDL command via DIAG channel,
> >> >then modem enter EE EDL
> >> > 3. boot.c download 'flash programmer image' via BHI interface 4.
> >> > modem enter EE FP, and create EDL channels (34, 35) device 5. user
> >> > space tool download 'firmware image' to modem via EDL channels
> >> >by firehose protocol
> >> >
> >> > Signed-off-by: carl.yin
[carl.yin] can you give some advice one above commit message? I am afraid it is
clear and brief.
> >> > ---
> >> > drivers/bus/mhi/core/init.c | 2 ++
> >> > drivers/bus/mhi/core/internal.h | 1 +
> >> > drivers/bus/mhi/core/main.c | 5 -
> >> > drivers/bus/mhi/core/pm.c | 13 -
> >> > include/linux/mhi.h | 4 +++-
> >> > 5 files changed, 22 insertions(+), 3 deletions(-)
> >> >
> >> > diff --git a/drivers/bus/mhi/core/init.c
> >> > b/drivers/bus/mhi/core/init.c index ac4aa5c..e34616b 100644
> >> > --- a/drivers/bus/mhi/core/init.c
> >> > +++ b/drivers/bus/mhi/core/init.c
> >> > @@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
> >> > [MHI_EE_WFW] = "WFW",
> >> > [MHI_EE_PTHRU] = "PASS THRU",
> >> > [MHI_EE_EDL] = "EDL",
> >> > +[MHI_EE_FP] = "FLASH PROGRAMMER",
> >> > [MHI_EE_DISABLE_TRANSITION] = "DISABLE",
> >> > [MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED", }; @@ -35,6 +36,7
> @@
> >> > const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
> >> > [DEV_ST_TRANSITION_READY] = "READY",
> >> > [DEV_ST_TRANSITION_SBL] = "SBL",
> >> > [DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
> >> > +[DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
> >> > [DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
> >> > [DEV_ST_TRANSITION_DISABLE] = "DISABLE", }; diff --git
> >> > a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
> >> > index 4abf0cf..6ae897a 100644
> >> > --- a/drivers/bus/mhi/core/internal.h
> >> > +++ b/drivers/bus/mhi/core/internal.h
> >> > @@ -386,6 +386,7 @@ enum dev_st_transition {
> >> > DEV_ST_TRANSITION_READY,
> >> > DEV_ST_TRANSITION_SBL,
> >> > DEV_ST_TRANSITION_MISSION_MODE,
> >> > +DEV_ST_TRANSITION_FP,
> >> > DEV_ST_TRANSITION_SYS_ERR,
> >> > DEV_ST_TRANSITION_DISABLE,
> >> > DEV_ST_TRANSITION_MAX,
> >> > diff --git a/drivers/bus/mhi/core/main.c
> >> > b/drivers/bus/mhi/core/main.c index 3950792..a1e1561 100644
> >> > --- a/drivers/bus/mhi/core/main.c
> >> > +++ b/drivers/bus/mhi/core/main.c
> >> > @@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
> >> > irq_number, void *priv)
> >> > wake_up_all(_cntrl->state_event);
> >> >
> >> > /* For fatal errors, we let controller decide next step
> >> > */
> >> > -if (MHI_IN_PBL(ee))
> >> > +if (MHI_IN_PBL(mhi_cntrl->ee))
> >> Let's please have this as a separate patch with a fixes tag, as it
> >> fixes a pre-existing bug. I am sure Mani would want this.
[carl.yin] should I wait this bug fixed, then submit patch v3?
> >> > mhi_cntrl->status_cb(mhi_cntrl,
> >> > MHI_CB_FATAL_ERROR);
> >> > else
> >> > mhi_pm_sys_err_handler(mhi_cntrl);
> >> > @@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct
> >> > mhi_controller *mhi_cntrl,
> >> > case MHI_EE_SBL:
> >> > st = DEV_ST_TRANSITION_SBL;
> >> > break;
> >> > +case MHI_EE_FP:
> >> > +st = DEV_ST_TRANSITION_FP;
> >> > +break;
> >> When do you get this EE event on the control event ring? Does it come
> >> by after you have detected EE as FP from mhi_sync_power_up() and move
> >> to ready and then M0?
> > [carl.yin] it is from the log, next is the sdx24's log.
> > Another thing, I find mhi controller's status_cb() should not directly
> > call mhi_power_down(), The function stack is
> >
> mhi_intvec_threaded_handler()->status_cb()->mhi_power_down()->free_irq().
> > Should not free irq in the irq thread.
> >
> > [ 304.263111] mhi :03:00.0: Preparing channel: 4 [ 304.275580]
> > mhi :03:00.0: Chan: 4 successfully moved to start state [
> > 304.275580] mhi :03:00.0: Preparing channel: 5 [ 304.285901] mhi
> > :03:00.0: Chan: 5 successfully moved to start state [ 307.380999]
> > mhi :03:00.0: local ee:EDL device ee:AMSS
Re: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
On 2020-11-02 17:47, Carl Yin wrote:
Hi bbhatt:
On November 03, 2020 12:34 AM, Bhatt wrote:
On 2020-11-02 04:27, carl@quectel.com wrote:
> From: "carl.yin"
>
> MHI wwan modems support download firmware to nand or emmc by firehose
> protocol, process as next:
> 1. modem boot up and enter EE AMSS, create DIAG channels (4, 5) device
> 2. user space tool send EDL command via DIAG channel,
>then modem enter EE EDL
> 3. boot.c download 'flash programmer image' via BHI interface 4. modem
> enter EE FP, and create EDL channels (34, 35) device 5. user space
> tool download 'firmware image' to modem via EDL channels
>by firehose protocol
>
> Signed-off-by: carl.yin
> ---
> drivers/bus/mhi/core/init.c | 2 ++
> drivers/bus/mhi/core/internal.h | 1 +
> drivers/bus/mhi/core/main.c | 5 -
> drivers/bus/mhi/core/pm.c | 13 -
> include/linux/mhi.h | 4 +++-
> 5 files changed, 22 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
> index ac4aa5c..e34616b 100644
> --- a/drivers/bus/mhi/core/init.c
> +++ b/drivers/bus/mhi/core/init.c
> @@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
>[MHI_EE_WFW] = "WFW",
>[MHI_EE_PTHRU] = "PASS THRU",
>[MHI_EE_EDL] = "EDL",
> + [MHI_EE_FP] = "FLASH PROGRAMMER",
>[MHI_EE_DISABLE_TRANSITION] = "DISABLE",
>[MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED", }; @@ -35,6 +36,7 @@
> const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
>[DEV_ST_TRANSITION_READY] = "READY",
>[DEV_ST_TRANSITION_SBL] = "SBL",
>[DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
> + [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
>[DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
>[DEV_ST_TRANSITION_DISABLE] = "DISABLE", }; diff --git
> a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
> index 4abf0cf..6ae897a 100644
> --- a/drivers/bus/mhi/core/internal.h
> +++ b/drivers/bus/mhi/core/internal.h
> @@ -386,6 +386,7 @@ enum dev_st_transition {
>DEV_ST_TRANSITION_READY,
>DEV_ST_TRANSITION_SBL,
>DEV_ST_TRANSITION_MISSION_MODE,
> + DEV_ST_TRANSITION_FP,
>DEV_ST_TRANSITION_SYS_ERR,
>DEV_ST_TRANSITION_DISABLE,
>DEV_ST_TRANSITION_MAX,
> diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
> index 3950792..a1e1561 100644
> --- a/drivers/bus/mhi/core/main.c
> +++ b/drivers/bus/mhi/core/main.c
> @@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
> irq_number, void *priv)
>wake_up_all(_cntrl->state_event);
>
>/* For fatal errors, we let controller decide next step */
> - if (MHI_IN_PBL(ee))
> + if (MHI_IN_PBL(mhi_cntrl->ee))
Let's please have this as a separate patch with a fixes tag, as it
fixes a pre-existing
bug. I am sure Mani would want this.
>mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
>else
>mhi_pm_sys_err_handler(mhi_cntrl);
> @@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller
> *mhi_cntrl,
>case MHI_EE_SBL:
>st = DEV_ST_TRANSITION_SBL;
>break;
> + case MHI_EE_FP:
> + st = DEV_ST_TRANSITION_FP;
> + break;
When do you get this EE event on the control event ring? Does it come
by after
you have detected EE as FP from mhi_sync_power_up() and move to ready
and
then M0?
[carl.yin] it is from the log, next is the sdx24's log.
Another thing, I find mhi controller's status_cb() should not directly
call mhi_power_down(),
The function stack is
mhi_intvec_threaded_handler()->status_cb()->mhi_power_down()->free_irq().
Should not free irq in the irq thread.
[ 304.263111] mhi :03:00.0: Preparing channel: 4
[ 304.275580] mhi :03:00.0: Chan: 4 successfully moved to start
state
[ 304.275580] mhi :03:00.0: Preparing channel: 5
[ 304.285901] mhi :03:00.0: Chan: 5 successfully moved to start
state
[ 307.380999] mhi :03:00.0: local ee:EDL device ee:AMSS
dev_state:SYS_ERR
[ 307.381000] mhi :03:00.0: System error detected
[ 307.381001] mhi-pci-generic :03:00.0: mhi_pci_status_cb ee=6,
cb=7
[ 307.381006] mhi :03:00.0: Handling state transition: DISABLE
[ 307.381007] mhi :03:00.0: Transitioning from PM state: SYS_ERR
Detect to: SHUTDOWN Process
[ 307.381008] mhi :03:00.0: Triggering MHI Reset in device
[ 307.381114] mhi :03:00.0: local ee:EDL device ee:DISABLE
dev_state:RESET
[ 307.381120] mhi :03:00.0: Waiting for all pending event ring
processing to complete
[ 307.381120] mhi :03:00.0: Waiting for all pending threads to
complete
[ 307.381121] mhi :03:00.0: Reset all active channels and remove
MHI devices
..
[ 307.402279] mhi :03:00.0: Resetting EV CTXT and CMD CTXT
[ 307.402280] mhi :03:00.0: Exiting with PM state: DISABLE, MHI
state: RESET
[
RE: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
Hi bbhatt:
On November 03, 2020 12:34 AM, Bhatt wrote:
> On 2020-11-02 04:27, carl@quectel.com wrote:
> > From: "carl.yin"
> >
> > MHI wwan modems support download firmware to nand or emmc by firehose
> > protocol, process as next:
> > 1. modem boot up and enter EE AMSS, create DIAG channels (4, 5) device
> > 2. user space tool send EDL command via DIAG channel,
> >then modem enter EE EDL
> > 3. boot.c download 'flash programmer image' via BHI interface 4. modem
> > enter EE FP, and create EDL channels (34, 35) device 5. user space
> > tool download 'firmware image' to modem via EDL channels
> >by firehose protocol
> >
> > Signed-off-by: carl.yin
> > ---
> > drivers/bus/mhi/core/init.c | 2 ++
> > drivers/bus/mhi/core/internal.h | 1 +
> > drivers/bus/mhi/core/main.c | 5 -
> > drivers/bus/mhi/core/pm.c | 13 -
> > include/linux/mhi.h | 4 +++-
> > 5 files changed, 22 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
> > index ac4aa5c..e34616b 100644
> > --- a/drivers/bus/mhi/core/init.c
> > +++ b/drivers/bus/mhi/core/init.c
> > @@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
> > [MHI_EE_WFW] = "WFW",
> > [MHI_EE_PTHRU] = "PASS THRU",
> > [MHI_EE_EDL] = "EDL",
> > + [MHI_EE_FP] = "FLASH PROGRAMMER",
> > [MHI_EE_DISABLE_TRANSITION] = "DISABLE",
> > [MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED", }; @@ -35,6 +36,7 @@
> > const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
> > [DEV_ST_TRANSITION_READY] = "READY",
> > [DEV_ST_TRANSITION_SBL] = "SBL",
> > [DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
> > + [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
> > [DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
> > [DEV_ST_TRANSITION_DISABLE] = "DISABLE", }; diff --git
> > a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
> > index 4abf0cf..6ae897a 100644
> > --- a/drivers/bus/mhi/core/internal.h
> > +++ b/drivers/bus/mhi/core/internal.h
> > @@ -386,6 +386,7 @@ enum dev_st_transition {
> > DEV_ST_TRANSITION_READY,
> > DEV_ST_TRANSITION_SBL,
> > DEV_ST_TRANSITION_MISSION_MODE,
> > + DEV_ST_TRANSITION_FP,
> > DEV_ST_TRANSITION_SYS_ERR,
> > DEV_ST_TRANSITION_DISABLE,
> > DEV_ST_TRANSITION_MAX,
> > diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
> > index 3950792..a1e1561 100644
> > --- a/drivers/bus/mhi/core/main.c
> > +++ b/drivers/bus/mhi/core/main.c
> > @@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
> > irq_number, void *priv)
> > wake_up_all(_cntrl->state_event);
> >
> > /* For fatal errors, we let controller decide next step */
> > - if (MHI_IN_PBL(ee))
> > + if (MHI_IN_PBL(mhi_cntrl->ee))
> Let's please have this as a separate patch with a fixes tag, as it fixes a
> pre-existing
> bug. I am sure Mani would want this.
> > mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
> > else
> > mhi_pm_sys_err_handler(mhi_cntrl);
> > @@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller
> > *mhi_cntrl,
> > case MHI_EE_SBL:
> > st = DEV_ST_TRANSITION_SBL;
> > break;
> > + case MHI_EE_FP:
> > + st = DEV_ST_TRANSITION_FP;
> > + break;
> When do you get this EE event on the control event ring? Does it come by after
> you have detected EE as FP from mhi_sync_power_up() and move to ready and
> then M0?
[carl.yin] it is from the log, next is the sdx24's log.
Another thing, I find mhi controller's status_cb() should not directly call
mhi_power_down(),
The function stack is
mhi_intvec_threaded_handler()->status_cb()->mhi_power_down()->free_irq().
Should not free irq in the irq thread.
[ 304.263111] mhi :03:00.0: Preparing channel: 4
[ 304.275580] mhi :03:00.0: Chan: 4 successfully moved to start state
[ 304.275580] mhi :03:00.0: Preparing channel: 5
[ 304.285901] mhi :03:00.0: Chan: 5 successfully moved to start state
[ 307.380999] mhi :03:00.0: local ee:EDL device ee:AMSS dev_state:SYS_ERR
[ 307.381000] mhi :03:00.0: System error detected
[ 307.381001] mhi-pci-generic :03:00.0: mhi_pci_status_cb ee=6, cb=7
[ 307.381006] mhi :03:00.0: Handling state transition: DISABLE
[ 307.381007] mhi :03:00.0: Transitioning from PM state: SYS_ERR Detect
to: SHUTDOWN Process
[ 307.381008] mhi :03:00.0: Triggering MHI Reset in device
[ 307.381114] mhi :03:00.0: local ee:EDL device ee:DISABLE dev_state:RESET
[ 307.381120] mhi :03:00.0: Waiting for all pending event ring processing
to complete
[ 307.381120] mhi :03:00.0: Waiting for all pending threads to complete
[ 307.381121] mhi :03:00.0: Reset all active channels and remove MHI
devices
..
[
Re: [PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
On 2020-11-02 04:27, carl@quectel.com wrote:
From: "carl.yin"
MHI wwan modems support download firmware to nand or emmc
by firehose protocol, process as next:
1. modem boot up and enter EE AMSS, create DIAG channels (4, 5) device
2. user space tool send EDL command via DIAG channel,
then modem enter EE EDL
3. boot.c download 'flash programmer image' via BHI interface
4. modem enter EE FP, and create EDL channels (34, 35) device
5. user space tool download 'firmware image' to modem via EDL channels
by firehose protocol
Signed-off-by: carl.yin
---
drivers/bus/mhi/core/init.c | 2 ++
drivers/bus/mhi/core/internal.h | 1 +
drivers/bus/mhi/core/main.c | 5 -
drivers/bus/mhi/core/pm.c | 13 -
include/linux/mhi.h | 4 +++-
5 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index ac4aa5c..e34616b 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
[MHI_EE_WFW] = "WFW",
[MHI_EE_PTHRU] = "PASS THRU",
[MHI_EE_EDL] = "EDL",
+ [MHI_EE_FP] = "FLASH PROGRAMMER",
[MHI_EE_DISABLE_TRANSITION] = "DISABLE",
[MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED",
};
@@ -35,6 +36,7 @@ const char * const
dev_state_tran_str[DEV_ST_TRANSITION_MAX] = {
[DEV_ST_TRANSITION_READY] = "READY",
[DEV_ST_TRANSITION_SBL] = "SBL",
[DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
+ [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
[DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
[DEV_ST_TRANSITION_DISABLE] = "DISABLE",
};
diff --git a/drivers/bus/mhi/core/internal.h
b/drivers/bus/mhi/core/internal.h
index 4abf0cf..6ae897a 100644
--- a/drivers/bus/mhi/core/internal.h
+++ b/drivers/bus/mhi/core/internal.h
@@ -386,6 +386,7 @@ enum dev_st_transition {
DEV_ST_TRANSITION_READY,
DEV_ST_TRANSITION_SBL,
DEV_ST_TRANSITION_MISSION_MODE,
+ DEV_ST_TRANSITION_FP,
DEV_ST_TRANSITION_SYS_ERR,
DEV_ST_TRANSITION_DISABLE,
DEV_ST_TRANSITION_MAX,
diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 3950792..a1e1561 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int
irq_number, void *priv)
wake_up_all(_cntrl->state_event);
/* For fatal errors, we let controller decide next step */
- if (MHI_IN_PBL(ee))
+ if (MHI_IN_PBL(mhi_cntrl->ee))
Let's please have this as a separate patch with a fixes tag, as it fixes
a
pre-existing bug. I am sure Mani would want this.
mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
else
mhi_pm_sys_err_handler(mhi_cntrl);
@@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller
*mhi_cntrl,
case MHI_EE_SBL:
st = DEV_ST_TRANSITION_SBL;
break;
+ case MHI_EE_FP:
+ st = DEV_ST_TRANSITION_FP;
+ break;
When do you get this EE event on the control event ring? Does it come by
after you
have detected EE as FP from mhi_sync_power_up() and move to ready and
then M0?
case MHI_EE_WFW:
case MHI_EE_AMSS:
st = DEV_ST_TRANSITION_MISSION_MODE;
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index 3de7b16..2d68812 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -658,6 +658,12 @@ void mhi_pm_st_worker(struct work_struct *work)
case DEV_ST_TRANSITION_MISSION_MODE:
mhi_pm_mission_mode_transition(mhi_cntrl);
break;
+ case DEV_ST_TRANSITION_FP:
+ write_lock_irq(_cntrl->pm_lock);
+ mhi_cntrl->ee = MHI_EE_FP;
+ write_unlock_irq(_cntrl->pm_lock);
+ mhi_create_devices(mhi_cntrl);
+ break;
case DEV_ST_TRANSITION_READY:
mhi_ready_state_transition(mhi_cntrl);
break;
@@ -1077,10 +1083,15 @@ int mhi_sync_power_up(struct mhi_controller
*mhi_cntrl)
wait_event_timeout(mhi_cntrl->state_event,
MHI_IN_MISSION_MODE(mhi_cntrl->ee) ||
+ mhi_cntrl->ee == MHI_EE_FP ||
MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),
msecs_to_jiffies(mhi_cntrl->timeout_ms));
- ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT;
+ if (mhi_cntrl->ee == MHI_EE_FP)
+ mhi_queue_state_transition(mhi_cntrl, DEV_ST_TRANSITION_READY);
[PATCH v2] bus: mhi: core: Add support MHI EE FP for download firmware
From: "carl.yin"
MHI wwan modems support download firmware to nand or emmc
by firehose protocol, process as next:
1. modem boot up and enter EE AMSS, create DIAG channels (4, 5) device
2. user space tool send EDL command via DIAG channel,
then modem enter EE EDL
3. boot.c download 'flash programmer image' via BHI interface
4. modem enter EE FP, and create EDL channels (34, 35) device
5. user space tool download 'firmware image' to modem via EDL channels
by firehose protocol
Signed-off-by: carl.yin
---
drivers/bus/mhi/core/init.c | 2 ++
drivers/bus/mhi/core/internal.h | 1 +
drivers/bus/mhi/core/main.c | 5 -
drivers/bus/mhi/core/pm.c | 13 -
include/linux/mhi.h | 4 +++-
5 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index ac4aa5c..e34616b 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -26,6 +26,7 @@ const char * const mhi_ee_str[MHI_EE_MAX] = {
[MHI_EE_WFW] = "WFW",
[MHI_EE_PTHRU] = "PASS THRU",
[MHI_EE_EDL] = "EDL",
+ [MHI_EE_FP] = "FLASH PROGRAMMER",
[MHI_EE_DISABLE_TRANSITION] = "DISABLE",
[MHI_EE_NOT_SUPPORTED] = "NOT SUPPORTED",
};
@@ -35,6 +36,7 @@ const char * const dev_state_tran_str[DEV_ST_TRANSITION_MAX]
= {
[DEV_ST_TRANSITION_READY] = "READY",
[DEV_ST_TRANSITION_SBL] = "SBL",
[DEV_ST_TRANSITION_MISSION_MODE] = "MISSION_MODE",
+ [DEV_ST_TRANSITION_FP] = "FLASH_PROGRAMMER",
[DEV_ST_TRANSITION_SYS_ERR] = "SYS_ERR",
[DEV_ST_TRANSITION_DISABLE] = "DISABLE",
};
diff --git a/drivers/bus/mhi/core/internal.h b/drivers/bus/mhi/core/internal.h
index 4abf0cf..6ae897a 100644
--- a/drivers/bus/mhi/core/internal.h
+++ b/drivers/bus/mhi/core/internal.h
@@ -386,6 +386,7 @@ enum dev_st_transition {
DEV_ST_TRANSITION_READY,
DEV_ST_TRANSITION_SBL,
DEV_ST_TRANSITION_MISSION_MODE,
+ DEV_ST_TRANSITION_FP,
DEV_ST_TRANSITION_SYS_ERR,
DEV_ST_TRANSITION_DISABLE,
DEV_ST_TRANSITION_MAX,
diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
index 3950792..a1e1561 100644
--- a/drivers/bus/mhi/core/main.c
+++ b/drivers/bus/mhi/core/main.c
@@ -422,7 +422,7 @@ irqreturn_t mhi_intvec_threaded_handler(int irq_number,
void *priv)
wake_up_all(_cntrl->state_event);
/* For fatal errors, we let controller decide next step */
- if (MHI_IN_PBL(ee))
+ if (MHI_IN_PBL(mhi_cntrl->ee))
mhi_cntrl->status_cb(mhi_cntrl, MHI_CB_FATAL_ERROR);
else
mhi_pm_sys_err_handler(mhi_cntrl);
@@ -782,6 +782,9 @@ int mhi_process_ctrl_ev_ring(struct mhi_controller
*mhi_cntrl,
case MHI_EE_SBL:
st = DEV_ST_TRANSITION_SBL;
break;
+ case MHI_EE_FP:
+ st = DEV_ST_TRANSITION_FP;
+ break;
case MHI_EE_WFW:
case MHI_EE_AMSS:
st = DEV_ST_TRANSITION_MISSION_MODE;
diff --git a/drivers/bus/mhi/core/pm.c b/drivers/bus/mhi/core/pm.c
index 3de7b16..2d68812 100644
--- a/drivers/bus/mhi/core/pm.c
+++ b/drivers/bus/mhi/core/pm.c
@@ -658,6 +658,12 @@ void mhi_pm_st_worker(struct work_struct *work)
case DEV_ST_TRANSITION_MISSION_MODE:
mhi_pm_mission_mode_transition(mhi_cntrl);
break;
+ case DEV_ST_TRANSITION_FP:
+ write_lock_irq(_cntrl->pm_lock);
+ mhi_cntrl->ee = MHI_EE_FP;
+ write_unlock_irq(_cntrl->pm_lock);
+ mhi_create_devices(mhi_cntrl);
+ break;
case DEV_ST_TRANSITION_READY:
mhi_ready_state_transition(mhi_cntrl);
break;
@@ -1077,10 +1083,15 @@ int mhi_sync_power_up(struct mhi_controller *mhi_cntrl)
wait_event_timeout(mhi_cntrl->state_event,
MHI_IN_MISSION_MODE(mhi_cntrl->ee) ||
+ mhi_cntrl->ee == MHI_EE_FP ||
MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state),
msecs_to_jiffies(mhi_cntrl->timeout_ms));
- ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT;
+ if (mhi_cntrl->ee == MHI_EE_FP)
+ mhi_queue_state_transition(mhi_cntrl, DEV_ST_TRANSITION_READY);
+ else
+ ret = (MHI_IN_MISSION_MODE(mhi_cntrl->ee)) ? 0 : -ETIMEDOUT;
+
if (ret)
mhi_power_down(mhi_cntrl, false);
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 6e1122c..4620af8 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -120,6 +120,7 @@ struct mhi_link_info {
