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From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: gregkh@linuxfoundation.org
Cc: hemantk@codeaurora.org, bbhatt@codeaurora.org,
	linux-arm-msm@vger.kernel.org, jhugo@codeaurora.org,
	linux-kernel@vger.kernel.org, loic.poulain@linaro.org,
	Jeffrey Hugo <quic_jhugo@quicinc.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 05/10] bus: mhi: Add MMIO region length to controller structure
Date: Mon,  2 Aug 2021 10:42:50 +0530	[thread overview]
Message-ID: <20210802051255.5771-6-manivannan.sadhasivam@linaro.org> (raw)
In-Reply-To: <20210802051255.5771-1-manivannan.sadhasivam@linaro.org>

From: Bhaumik Bhatt <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>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Hemant Kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/1620330705-40192-4-git-send-email-bbhatt@codeaurora.org
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
 include/linux/mhi.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/mhi.h b/include/linux/mhi.h
index 5e08468854db..b8ca6943f0b7 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;
-- 
2.25.1


  parent reply	other threads:[~2021-08-02  5:13 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-02  5:12 [PATCH 00/10] MHI patches for v5.15 - Take 1 Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 01/10] bus: mhi: Add inbound buffers allocation flag Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 02/10] bus: mhi: pci_generic: Add Cinterion MV31-W PCIe to MHI Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 03/10] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 04/10] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Manivannan Sadhasivam
2021-08-02  5:12 ` Manivannan Sadhasivam [this message]
2021-08-02  5:12 ` [PATCH 06/10] ath11k: set register access length for MHI driver Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 07/10] bus: mhi: pci_generic: Set " Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 08/10] bus: mhi: core: Add range checks for BHI and BHIe Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 09/10] bus: mhi: core: Replace DMA allocation wrappers with original APIs Manivannan Sadhasivam
2021-08-02  5:12 ` [PATCH 10/10] bus: mhi: core: Improve debug messages for power up Manivannan Sadhasivam

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