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From: Bhaumik Bhatt <>
	Bhaumik Bhatt <>
Subject: [PATCH v4 3/6] bus: mhi: Add MMIO region length to controller structure
Date: Thu,  6 May 2021 12:32:22 -0700	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

From: Bhaumik Bhatt <>

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 <>
Reviewed-by: Jeffrey Hugo <>
Reviewed-by: Hemant Kumar <>
 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;
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project

  parent reply	other threads:[~2021-05-06 19:33 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-06 19:32 [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 1/6] bus: mhi: core: Set BHI/BHIe offsets on power up preparation Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 2/6] bus: mhi: core: Set BHI and BHIe pointers to NULL in clean-up Bhaumik Bhatt
2021-05-06 19:32 ` Bhaumik Bhatt [this message]
2021-05-06 19:32 ` [PATCH v4 4/6] ath11k: set register access length for MHI driver Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 5/6] bus: mhi: pci_generic: Set " Bhaumik Bhatt
2021-05-06 19:32 ` [PATCH v4 6/6] bus: mhi: core: Add range checks for BHI and BHIe Bhaumik Bhatt
2021-05-06 19:51 [PATCH v4 0/6] BHI/BHIe improvements for MHI power purposes Bhaumik Bhatt
2021-05-06 19:51 ` [PATCH v4 3/6] bus: mhi: Add MMIO region length to controller structure Bhaumik Bhatt
2021-05-21 13:38   ` Manivannan Sadhasivam

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