| Message ID | 20230530141813.29333-2-kvalo@kernel.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | wifi: ath11k: support firmware-2.bin | expand |
On Tue, May 30, 2023 at 05:18:11PM +0300, 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> Reviewed-by: Manivannan Sadhasivam <mani@kernel.org> - Mani > --- > 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) > + * @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; > -- > 2.30.2 > >
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) + * @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;