| Message ID | 20230530141813.29333-1-kvalo@kernel.org |
|---|---|
| Headers | show |
| Series | wifi: ath11k: support firmware-2.bin | expand |
On 5/30/2023 8:18 AM, Kalle Valo wrote: > From: Kalle Valo <quic_kvalo@quicinc.com> > > Currently MHI loads the firmware image from the path provided by client > devices. ath11k needs to support firmware image embedded along with meta data > (named as firmware-2.bin). So allow the client driver to request the firmware > file from user space on it's own and provide the firmware image data and size > to MHI via a pointer struct mhi_controller::fw_data. > > This is an optional feature, if fw_data is NULL MHI load the firmware using the > name from struct mhi_controller::fw_image string as before. > > Tested with ath11k and WCN6855 hw2.0. > > Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com> > --- > drivers/bus/mhi/host/boot.c | 34 +++++++++++++++++++++++++--------- > include/linux/mhi.h | 6 ++++++ > 2 files changed, 31 insertions(+), 9 deletions(-) > > diff --git a/drivers/bus/mhi/host/boot.c b/drivers/bus/mhi/host/boot.c > index d2a19b07ccb8..edc0ec5a0933 100644 > --- a/drivers/bus/mhi/host/boot.c > +++ b/drivers/bus/mhi/host/boot.c > @@ -365,12 +365,10 @@ int mhi_alloc_bhie_table(struct mhi_controller *mhi_cntrl, > } > > static void mhi_firmware_copy(struct mhi_controller *mhi_cntrl, > - const struct firmware *firmware, > + const u8 *buf, size_t remainder, > struct image_info *img_info) > { > - size_t remainder = firmware->size; > size_t to_cpy; > - const u8 *buf = firmware->data; > struct mhi_buf *mhi_buf = img_info->mhi_buf; > struct bhi_vec_entry *bhi_vec = img_info->bhi_vec; > > @@ -393,9 +391,10 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > struct device *dev = &mhi_cntrl->mhi_dev->dev; > enum mhi_pm_state new_state; > const char *fw_name; > + const u8 *fw_data; > void *buf; > dma_addr_t dma_addr; > - size_t size; > + size_t size, fw_sz; > int i, ret; > > if (MHI_PM_IN_ERROR_STATE(mhi_cntrl->pm_state)) { > @@ -425,6 +424,20 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > fw_name = (mhi_cntrl->ee == MHI_EE_EDL) ? > mhi_cntrl->edl_image : mhi_cntrl->fw_image; > > + /* check if the driver has already provided the firmware data */ > + if (!fw_name && mhi_cntrl->fbc_download && > + mhi_cntrl->fw_data && mhi_cntrl->fw_sz) { > + if (!mhi_cntrl->sbl_size) { > + dev_err(dev, "fw_data provided but no sbl_size\n"); > + goto error_fw_load; > + } > + > + size = mhi_cntrl->sbl_size; > + fw_data = mhi_cntrl->fw_data; > + fw_sz = mhi_cntrl->fw_sz; > + goto skip_req_fw; > + } > + > if (!fw_name || (mhi_cntrl->fbc_download && (!mhi_cntrl->sbl_size || > !mhi_cntrl->seg_len))) { > dev_err(dev, > @@ -444,6 +457,10 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > if (size > firmware->size) > size = firmware->size; > > + fw_data = firmware->data; > + fw_sz = firmware->size; > + > +skip_req_fw: > buf = dma_alloc_coherent(mhi_cntrl->cntrl_dev, size, &dma_addr, > GFP_KERNEL); > if (!buf) { > @@ -452,7 +469,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > } > > /* Download image using BHI */ > - memcpy(buf, firmware->data, size); > + memcpy(buf, fw_data, size); > ret = mhi_fw_load_bhi(mhi_cntrl, dma_addr, size); > dma_free_coherent(mhi_cntrl->cntrl_dev, size, buf, dma_addr); > > @@ -464,7 +481,7 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > } > > /* Wait for ready since EDL image was loaded */ > - if (fw_name == mhi_cntrl->edl_image) { > + if (fw_name && fw_name == mhi_cntrl->edl_image) { > release_firmware(firmware); > goto fw_load_ready_state; > } > @@ -478,15 +495,14 @@ void mhi_fw_load_handler(struct mhi_controller *mhi_cntrl) > * device transitioning into MHI READY state > */ > if (mhi_cntrl->fbc_download) { > - ret = mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->fbc_image, > - firmware->size); > + ret = mhi_alloc_bhie_table(mhi_cntrl, &mhi_cntrl->fbc_image, fw_sz); > 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); > + mhi_firmware_copy(mhi_cntrl, fw_data, fw_sz, mhi_cntrl->fbc_image); > } > > release_firmware(firmware); > diff --git a/include/linux/mhi.h b/include/linux/mhi.h > index f6de4b6ecfc7..7bd58fcb7e58 100644 > --- a/include/linux/mhi.h > +++ b/include/linux/mhi.h > @@ -299,6 +299,10 @@ struct mhi_controller_config { > * @iova_start: IOMMU starting address for data (required) > * @iova_stop: IOMMU stop address for data (required) > * @fw_image: Firmware image name for normal booting (optional) > + * @fw_data: Firmware image data content for normal booting, used only > + * if fw_image is NULL (optional) It looks like your implementation requires fbc_download to be set, and while you mention that for fw_sz, you don't mention it here. While I think this would be useful for non-fbc usecases, we don't have that use currently. I think documenting the fbc_download requirement and letting the usecase that needs this for non-fbc extend it is reasonable. With this, Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> > + * @fw_sz: Firmware image data size for normal booting, used only if fw_image > + * is NULL and fbc_download is true (optional) > * @edl_image: Firmware image name for emergency download mode (optional) > * @rddm_size: RAM dump size that host should allocate for debugging purpose > * @sbl_size: SBL image size downloaded through BHIe (optional) > @@ -384,6 +388,8 @@ struct mhi_controller { > dma_addr_t iova_start; > dma_addr_t iova_stop; > const char *fw_image; > + const u8 *fw_data; > + size_t fw_sz; > const char *edl_image; > size_t rddm_size; > size_t sbl_size;
Jeffrey Hugo <quic_jhugo@quicinc.com> writes: >> --- a/include/linux/mhi.h >> +++ b/include/linux/mhi.h >> @@ -299,6 +299,10 @@ struct mhi_controller_config { >> * @iova_start: IOMMU starting address for data (required) >> * @iova_stop: IOMMU stop address for data (required) >> * @fw_image: Firmware image name for normal booting (optional) >> + * @fw_data: Firmware image data content for normal booting, used only >> + * if fw_image is NULL (optional) > > It looks like your implementation requires fbc_download to be set, and > while you mention that for fw_sz, you don't mention it here. While I > think this would be useful for non-fbc usecases, we don't have that > use currently. Thanks for the review. I submitted v4 to fix this.
From: Kalle Valo <quic_kvalo@quicinc.com> We need firmware-2.bin support in ath11k so that we can add ath11k specific meta data to firmware releases, for example feature flags so that ath11k can automatically detect what features the firmware release supports. Also makes it easier and more reliable to update the firmware for PCI devices as it's not possible to mix firmware files, everything will be in one file. Please review and comment. v3: * patch 1: add "bus: mhi: host: ..." to title * patch 1: add a comment to mhi_fw_load_handler() * patch 1: check sbl_size * patch 3: for smooth backwards compatibility don't print an error "failed to load firmware-2.bin: -2" v2: https://patchwork.kernel.org/project/linux-wireless/list/?series=727935&state=*&order=date * mhi_fw_load_handler(): fold two lines into one * struct mhi_controller_config: document that fbc_download needs to be set * run pahole struct mhi_controller_config Anilkumar Kolli (1): wifi: ath11k: add firmware-2.bin support Kalle Valo (2): bus: mhi: host: allow MHI client drivers to provide the firmware via a pointer wifi: ath11k: qmi: refactor ath11k_qmi_m3_load() drivers/bus/mhi/host/boot.c | 34 +++-- drivers/net/wireless/ath/ath11k/Makefile | 3 +- drivers/net/wireless/ath/ath11k/core.c | 8 ++ drivers/net/wireless/ath/ath11k/core.h | 15 +++ drivers/net/wireless/ath/ath11k/fw.c | 157 +++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/fw.h | 27 ++++ drivers/net/wireless/ath/ath11k/mhi.c | 18 ++- drivers/net/wireless/ath/ath11k/qmi.c | 54 +++++--- include/linux/mhi.h | 6 + 9 files changed, 289 insertions(+), 33 deletions(-) create mode 100644 drivers/net/wireless/ath/ath11k/fw.c create mode 100644 drivers/net/wireless/ath/ath11k/fw.h base-commit: 4ab7f08db5310ded48a5c1f3ec3f2e177ba6b1c2