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bus: mhi: core: Improve debug logs for loading firmware

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Add log messages to track boot flow errors and timeouts in SBL or AMSS
firmware loading to aid in debug.

Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Reviewed-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20200521170249.21795-8-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bhaumik Bhatt 2020-05-21 22:32:42 +05:30 committed by Greg Kroah-Hartman
parent a21eaf592f
commit 0a895f091e
1 changed files with 18 additions and 3 deletions
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21
drivers/bus/mhi/core/boot.c
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@ -121,7 +121,8 @@ static int __mhi_download_rddm_in_panic(struct mhi_controller *mhi_cntrl)
ee = mhi_get_exec_env(mhi_cntrl);
}
dev_dbg(dev, "Waiting for image download completion, current EE: %s\n",
dev_dbg(dev,
"Waiting for RDDM image download via BHIe, current EE:%s\n",
TO_MHI_EXEC_STR(ee));
while (retry--) {
@ -152,11 +153,14 @@ static int __mhi_download_rddm_in_panic(struct mhi_controller *mhi_cntrl)
int mhi_download_rddm_img(struct mhi_controller *mhi_cntrl, bool in_panic)
{
void __iomem *base = mhi_cntrl->bhie;
struct device *dev = &mhi_cntrl->mhi_dev->dev;
u32 rx_status;
if (in_panic)
return __mhi_download_rddm_in_panic(mhi_cntrl);
dev_dbg(dev, "Waiting for RDDM image download via BHIe\n");
/* Wait for the image download to complete */
wait_event_timeout(mhi_cntrl->state_event,
mhi_read_reg_field(mhi_cntrl, base,
@ -174,6 +178,7 @@ static int mhi_fw_load_amss(struct mhi_controller *mhi_cntrl,
const struct mhi_buf *mhi_buf)
{
void __iomem *base = mhi_cntrl->bhie;
struct device *dev = &mhi_cntrl->mhi_dev->dev;
rwlock_t *pm_lock = &mhi_cntrl->pm_lock;
u32 tx_status, sequence_id;
int ret;
@ -184,6 +189,7 @@ static int mhi_fw_load_amss(struct mhi_controller *mhi_cntrl,
return -EIO;
}
dev_dbg(dev, "Starting AMSS download via BHIe\n");
mhi_write_reg(mhi_cntrl, base, BHIE_TXVECADDR_HIGH_OFFS,
upper_32_bits(mhi_buf->dma_addr));
@ -435,7 +441,12 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
release_firmware(firmware);
/* Error or in EDL mode, we're done */
if (ret || mhi_cntrl->ee == MHI_EE_EDL)
if (ret) {
dev_err(dev, "MHI did not load SBL, ret:%d\n", ret);
return;
}
if (mhi_cntrl->ee == MHI_EE_EDL)
return;
write_lock_irq(&mhi_cntrl->pm_lock);
@ -463,8 +474,10 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
if (!mhi_cntrl->fbc_download)
return;
if (ret)
if (ret) {
dev_err(dev, "MHI did not enter READY state\n");
goto error_read;
}
/* Wait for the SBL event */
ret = wait_event_timeout(mhi_cntrl->state_event,
@ -482,6 +495,8 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
ret = mhi_fw_load_amss(mhi_cntrl,
/* Vector table is the last entry */
&image_info->mhi_buf[image_info->entries - 1]);
if (ret)
dev_err(dev, "MHI did not load AMSS, ret:%d\n", ret);
release_firmware(firmware);