From: Bhaumik Bhatt <bbhatt@codeaurora.org>
To: manivannan.sadhasivam@linaro.org
Cc: linux-arm-msm@vger.kernel.org, hemantk@codeaurora.org,
jhugo@codeaurora.org, linux-kernel@vger.kernel.org,
loic.poulain@linaro.org, linux-wireless@vger.kernel.org,
kvalo@codeaurora.org, ath11k@lists.infradead.org,
Bhaumik Bhatt <bbhatt@codeaurora.org>
Subject: [PATCH v2 3/6] bus: mhi: Add MMIO region length to controller structure
Date: Tue, 4 May 2021 16:37:55 -0700 [thread overview]
Message-ID: <1620171478-35679-4-git-send-email-bbhatt@codeaurora.org> (raw)
In-Reply-To: <1620171478-35679-1-git-send-email-bbhatt@codeaurora.org>
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 <bbhatt@codeaurora.org>
---
include/linux/mhi.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 944aa3a..f6901db 100644
--- a/include/linux/mhi.h
+++ b/include/linux/mhi.h
@@ -293,6 +293,7 @@ struct mhi_controller_config {
* @mhi_dev: MHI device instance for the controller
* @debugfs_dentry: MHI controller debugfs directory
* @regs: Base address of MHI MMIO register space (required)
+ * @reg_len: Length of the MHI MMIO region (required)
* @bhi: Points to base of MHI BHI register space
* @bhie: Points to base of MHI BHIe register space
* @wake_db: MHI WAKE doorbell register address
@@ -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;
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2021-05-04 23:38 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 23:37 [PATCH v2 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 1/6] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Bhaumik Bhatt
2021-05-04 23:37 ` Bhaumik Bhatt [this message]
2021-05-05 14:37 ` [PATCH v2 3/6] bus: mhi: Add MMIO region length to controller structure Jeffrey Hugo
2021-05-04 23:37 ` [PATCH v2 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 5/6] bus: mhi: pci_generic: Set " Bhaumik Bhatt
2021-05-04 23:37 ` [PATCH v2 6/6] bus: mhi: core: Add range checks for BHI and BHIe Bhaumik Bhatt
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