From f73891261566c8b0dae759fde5498d98f4f17ab6 Mon Sep 17 00:00:00 2001 From: Bhaumik Bhatt Date: Mon, 2 Aug 2021 10:42:50 +0530 Subject: [PATCH] bus: mhi: Add MMIO region length to controller structure [ Upstream commit baa7a08569358d9d16e71ce36f287c39a665d776 ] 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 Reviewed-by: Hemant Kumar Reviewed-by: Manivannan Sadhasivam Signed-off-by: Bhaumik Bhatt Signed-off-by: Manivannan Sadhasivam Link: https://lore.kernel.org/r/20210802051255.5771-6-manivannan.sadhasivam@linaro.org Signed-off-by: Greg Kroah-Hartman Stable-dep-of: 6a0c637bfee6 ("bus: mhi: host: Range check CHDBOFF and ERDBOFF") Signed-off-by: Sasha Levin --- include/linux/mhi.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/mhi.h b/include/linux/mhi.h index d4841e5a5f45..5d9f8c6f3d40 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 @@ -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;