| Message ID | 1606199334-18206-1-git-send-email-akolli@codeaurora.org |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] ath11k: add 64bit check before reading msi high addr | expand |
Anilkumar Kolli <akolli@codeaurora.org> wrote: > 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> > Signed-off-by: Kalle Valo <kvalo@codeaurora.org> Patch applied to ath-next branch of ath.git, thanks. e8e55d8919ea ath11k: add 64bit check before reading msi high addr -- https://patchwork.kernel.org/project/linux-wireless/patch/1606199334-18206-1-git-send-email-akolli@codeaurora.org/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
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 *ab_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 {
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> --- V2: - Fixes compilation issues drivers/net/wireless/ath/ath11k/pci.c | 11 +++++++++-- drivers/net/wireless/ath/ath11k/pci.h | 1 + 2 files changed, 10 insertions(+), 2 deletions(-)