All of lore.kernel.org
 help / color / mirror / Atom feed
From: Anilkumar Kolli <akolli@codeaurora.org>
To: ath11k@lists.infradead.org
Cc: Anilkumar Kolli <akolli@codeaurora.org>, linux-wireless@vger.kernel.org
Subject: [PATCH] ath11k: add 64bit check before reading msi high addr
Date: Thu, 19 Nov 2020 09:28:21 +0530	[thread overview]
Message-ID: <1605758301-11249-1-git-send-email-akolli@codeaurora.org> (raw)

In QCN9074 ath11k boot, firmware crash is observed in 64-bit
builds and is due to wrong 64 bit MSI address size. This patch
fixes the firmware crash. Read msi high addr if 64-bit addresses
allowed on MSI.

Tested-On: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r1-00026-QCAHKSWPL_SILICONZ-2

Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
---

 drivers/net/wireless/ath/ath11k/pci.c | 11 +++++++++--
 drivers/net/wireless/ath/ath11k/pci.h |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index b75f47dc36de..54ac0a861063 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -264,13 +264,18 @@ int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector)
 static void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
 				       u32 *msi_addr_hi)
 {
+	struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);
 	struct pci_dev *pci_dev = to_pci_dev(ab->dev);
 
 	pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
 			      msi_addr_lo);
 
-	pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
-			      msi_addr_hi);
+	if (test_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags)) {
+		pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
+				      msi_addr_hi);
+	} else {
+		*msi_addr_hi = 0;
+	}
 }
 
 int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ab_pci, char *user_name,
@@ -658,6 +663,8 @@ static int ath11k_pci_enable_msi(struct ath11k_pci *ab_pci)
 	}
 
 	ab_pci->msi_ep_base_data = msi_desc->msg.data;
+	if (msi_desc->msi_attrib.is_64)
+		set_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags);
 
 	ath11k_dbg(ab, ATH11K_DBG_PCI, "msi base data is %d\n", ab_pci->msi_ep_base_data);
 
diff --git a/drivers/net/wireless/ath/ath11k/pci.h b/drivers/net/wireless/ath/ath11k/pci.h
index 43562f774a37..9c503a17c237 100644
--- a/drivers/net/wireless/ath/ath11k/pci.h
+++ b/drivers/net/wireless/ath/ath11k/pci.h
@@ -38,6 +38,7 @@ struct ath11k_msi_config {
 
 enum ath11k_pci_flags {
 	ATH11K_PCI_FLAG_INIT_DONE,
+	ATH11K_PCI_FLAG_IS_MSI_64,
 };
 
 struct ath11k_pci {
-- 
2.7.4


-- 
ath11k mailing list
ath11k@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/ath11k

WARNING: multiple messages have this Message-ID (diff)
From: Anilkumar Kolli <akolli@codeaurora.org>
To: ath11k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org, Anilkumar Kolli <akolli@codeaurora.org>
Subject: [PATCH] ath11k: add 64bit check before reading msi high addr
Date: Thu, 19 Nov 2020 09:28:21 +0530	[thread overview]
Message-ID: <1605758301-11249-1-git-send-email-akolli@codeaurora.org> (raw)

In QCN9074 ath11k boot, firmware crash is observed in 64-bit
builds and is due to wrong 64 bit MSI address size. This patch
fixes the firmware crash. Read msi high addr if 64-bit addresses
allowed on MSI.

Tested-On: QCN9074 hw1.0 PCI WLAN.HK.2.4.0.1.r1-00026-QCAHKSWPL_SILICONZ-2

Signed-off-by: Anilkumar Kolli <akolli@codeaurora.org>
---

 drivers/net/wireless/ath/ath11k/pci.c | 11 +++++++++--
 drivers/net/wireless/ath/ath11k/pci.h |  1 +
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/pci.c b/drivers/net/wireless/ath/ath11k/pci.c
index b75f47dc36de..54ac0a861063 100644
--- a/drivers/net/wireless/ath/ath11k/pci.c
+++ b/drivers/net/wireless/ath/ath11k/pci.c
@@ -264,13 +264,18 @@ int ath11k_pci_get_msi_irq(struct device *dev, unsigned int vector)
 static void ath11k_pci_get_msi_address(struct ath11k_base *ab, u32 *msi_addr_lo,
 				       u32 *msi_addr_hi)
 {
+	struct ath11k_pci *ar_pci = ath11k_pci_priv(ab);
 	struct pci_dev *pci_dev = to_pci_dev(ab->dev);
 
 	pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_LO,
 			      msi_addr_lo);
 
-	pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
-			      msi_addr_hi);
+	if (test_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags)) {
+		pci_read_config_dword(pci_dev, pci_dev->msi_cap + PCI_MSI_ADDRESS_HI,
+				      msi_addr_hi);
+	} else {
+		*msi_addr_hi = 0;
+	}
 }
 
 int ath11k_pci_get_user_msi_assignment(struct ath11k_pci *ab_pci, char *user_name,
@@ -658,6 +663,8 @@ static int ath11k_pci_enable_msi(struct ath11k_pci *ab_pci)
 	}
 
 	ab_pci->msi_ep_base_data = msi_desc->msg.data;
+	if (msi_desc->msi_attrib.is_64)
+		set_bit(ATH11K_PCI_FLAG_IS_MSI_64, &ab_pci->flags);
 
 	ath11k_dbg(ab, ATH11K_DBG_PCI, "msi base data is %d\n", ab_pci->msi_ep_base_data);
 
diff --git a/drivers/net/wireless/ath/ath11k/pci.h b/drivers/net/wireless/ath/ath11k/pci.h
index 43562f774a37..9c503a17c237 100644
--- a/drivers/net/wireless/ath/ath11k/pci.h
+++ b/drivers/net/wireless/ath/ath11k/pci.h
@@ -38,6 +38,7 @@ struct ath11k_msi_config {
 
 enum ath11k_pci_flags {
 	ATH11K_PCI_FLAG_INIT_DONE,
+	ATH11K_PCI_FLAG_IS_MSI_64,
 };
 
 struct ath11k_pci {
-- 
2.7.4


             reply	other threads:[~2020-11-19  3:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-19  3:58 Anilkumar Kolli [this message]
2020-11-19  3:58 ` [PATCH] ath11k: add 64bit check before reading msi high addr Anilkumar Kolli
2020-11-23 18:36 ` Kalle Valo
2020-11-23 18:36 ` Kalle Valo

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1605758301-11249-1-git-send-email-akolli@codeaurora.org \
    --to=akolli@codeaurora.org \
    --cc=ath11k@lists.infradead.org \
    --cc=linux-wireless@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.