Commit baa7a085 authored by Bhaumik Bhatt's avatar Bhaumik Bhatt Committed by Greg Kroah-Hartman
Browse files

bus: mhi: Add MMIO region length to controller structure 

Make controller driver specify the MMIO register region length
for range checking of BHI or BHIe space. This can help validate
that offsets are in acceptable memory region or not and avoid any
boot-up issues due to BHI or BHIe memory accesses.

Link: https://lore.kernel.org/r/1620330705-40192-4-git-send-email-bbhatt@codeaurora.org


Reviewed-by: default avatarJeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: default avatarHemant Kumar <hemantk@codeaurora.org>
Reviewed-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: default avatarBhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: default avatarManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210802051255.5771-6-manivannan.sadhasivam@linaro.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3aa8f43b

include/linux/mhi.h

+2 −0
Original line number Diff line number Diff line
@@ -303,6 +303,7 @@ struct mhi_controller_config { 
 * @rddm_size: RAM dump size that host should allocate for debugging purpose

 * @sbl_size: SBL image size downloaded through BHIe (optional)

 * @seg_len: BHIe vector size (optional)

 * @reg_len: Length of the MHI MMIO region (required)

 * @fbc_image: Points to firmware image buffer

 * @rddm_image: Points to RAM dump buffer

 * @mhi_chan: Points to the channel configuration table
@@ -386,6 +387,7 @@ struct mhi_controller { 
	size_t rddm_size;

	size_t sbl_size;

	size_t seg_len;

	size_t reg_len;

	struct image_info *fbc_image;

	struct image_info *rddm_image;

	struct mhi_chan *mhi_chan;