Move MHI to a firmware download error state for a failure to find
the firmware files or to load SBL or EBL image using BHI/BHIe. This
helps detect an error state sooner and shortens the wait for a
synchronous power up timeout.
Signed-off-by: Bhaumik Bhatt <bbhatt@xxxxxxxxxxxxxx>
---
drivers/bus/mhi/core/boot.c | 43 +++++++++++++++++++++++++------------------
1 file changed, 25 insertions(+), 18 deletions(-)
diff --git a/drivers/bus/mhi/core/boot.c b/drivers/bus/mhi/core/boot.c
index 92b8dd3..fcc71f2 100644
--- a/drivers/bus/mhi/core/boot.c
+++ b/drivers/bus/mhi/core/boot.c
@@ -425,13 +425,13 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
!mhi_cntrl->seg_len))) {
dev_err(dev,
"No firmware image defined or !sbl_size || !seg_len\n");
- return;
+ goto error_fw_load;
}
ret = request_firmware(&firmware, fw_name, dev);
if (ret) {
dev_err(dev, "Error loading firmware: %d\n", ret);
- return;
+ goto error_fw_load;
}
size = (mhi_cntrl->fbc_download) ? mhi_cntrl->sbl_size : firmware->size;
@@ -443,7 +443,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
buf = mhi_alloc_coherent(mhi_cntrl, size, &dma_addr, GFP_KERNEL);
if (!buf) {
release_firmware(firmware);
- return;
+ goto error_fw_load;
}
/* Download SBL or EDL image using BHI */
@@ -451,17 +451,17 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
ret = mhi_fw_load_bhi(mhi_cntrl, dma_addr, size);
mhi_free_coherent(mhi_cntrl, size, buf, dma_addr);
- if (!mhi_cntrl->fbc_download || ret || mhi_cntrl->ee == MHI_EE_EDL)
- release_firmware(firmware);
-
/* Error or in EDL mode, we're done */
if (ret) {
dev_err(dev, "MHI did not load SBL/EDL image, ret:%d\n", ret);
- return;
+ release_firmware(firmware);
+ goto error_fw_load;
}
- if (mhi_cntrl->ee == MHI_EE_EDL)
+ if (mhi_cntrl->ee == MHI_EE_EDL) {
+ release_firmware(firmware);
return;
+ }
write_lock_irq(&mhi_cntrl->pm_lock);
mhi_cntrl->dev_state = MHI_STATE_RESET;
@@ -474,13 +474,17 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
if (mhi_cntrl->fbc_download) {
ret = mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->fbc_image,
firmware->size);
- if (ret)
- goto error_alloc_fw_table;
+ if (ret) {
+ release_firmware(firmware);
+ goto error_fw_load;
+ }
/* Load the firmware into BHIE vec table */
mhi_firmware_copy(mhi_cntrl, firmware, mhi_cntrl->fbc_image);
}
+ release_firmware(firmware);
+
fw_load_ee_pthru:
/* Transitioning into MHI RESET->READY state */
ret = mhi_ready_state_transition(mhi_cntrl);
@@ -490,7 +494,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
if (ret) {
dev_err(dev, "MHI did not enter READY state\n");
- goto error_read;
+ goto error_ready_state;
}
/* Wait for the SBL event */
@@ -501,7 +505,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
if (!ret || MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) {
dev_err(dev, "MHI did not enter SBL\n");
- goto error_read;
+ goto error_ready_state;
}
/* Start full firmware image download */
@@ -509,17 +513,20 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl)
ret = mhi_fw_load_bhie(mhi_cntrl,
/* Vector table is the last entry */
&image_info->mhi_buf[image_info->entries - 1]);
- if (ret)
+ if (ret) {
dev_err(dev, "MHI did not load AMSS, ret:%d\n", ret);
-
- release_firmware(firmware);
+ goto error_fw_load;
+ }
return;
-error_read:
+error_ready_state:
mhi_free_bhie_table(mhi_cntrl, mhi_cntrl->fbc_image);
mhi_cntrl->fbc_image = NULL;
-error_alloc_fw_table:
- release_firmware(firmware);
+error_fw_load:
+ write_lock_irq(&mhi_cntrl->pm_lock);
+ mhi_cntrl->pm_state = MHI_PM_FW_DL_ERR;
+ wake_up_all(&mhi_cntrl->state_event);
+ write_unlock_irq(&mhi_cntrl->pm_lock);
}
--
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