[PATCH v4 3/6] bus: mhi: Add MMIO region length to controller structure
From: Bhaumik Bhatt <hidden>
Date: 2021-05-06 19:52:12
Also in:
ath11k, linux-arm-msm, lkml
Subsystem:
mhi bus, the rest · Maintainers:
Manivannan Sadhasivam, Linus Torvalds
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. Signed-off-by: Bhaumik Bhatt <redacted> Reviewed-by: Jeffrey Hugo <redacted> Reviewed-by: Hemant Kumar <redacted> --- include/linux/mhi.h | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 944aa3a..9c347f5 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h@@ -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;
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