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bus: mhi: Add MMIO region length to controller structure

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[ Upstream commit baa7a08569 ]

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: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210802051255.5771-6-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 6a0c637bfee6 ("bus: mhi: host: Range check CHDBOFF and ERDBOFF")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bhaumik Bhatt
2021-08-02 10:42:50 +05:30
committed by Greg Kroah-Hartman
parent 1cacbb711e
commit f738912615
1 changed files with 2 additions and 0 deletions
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2
include/linux/mhi.h
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@@ -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
@@ -383,6 +384,7 @@ 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;