diff options
Diffstat (limited to 'target/linux/generic/pending-5.10/850-0010-PCI-aardvark-Add-support-for-masking-MSI-interrupts.patch')
-rw-r--r-- | target/linux/generic/pending-5.10/850-0010-PCI-aardvark-Add-support-for-masking-MSI-interrupts.patch | 117 |
1 files changed, 0 insertions, 117 deletions
diff --git a/target/linux/generic/pending-5.10/850-0010-PCI-aardvark-Add-support-for-masking-MSI-interrupts.patch b/target/linux/generic/pending-5.10/850-0010-PCI-aardvark-Add-support-for-masking-MSI-interrupts.patch deleted file mode 100644 index 10ac58bd28..0000000000 --- a/target/linux/generic/pending-5.10/850-0010-PCI-aardvark-Add-support-for-masking-MSI-interrupts.patch +++ /dev/null @@ -1,117 +0,0 @@ -From 7f353accca6e4a3222991c65b1a6801503973bd3 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> -Date: Fri, 2 Jul 2021 16:44:10 +0200 -Subject: [PATCH] PCI: aardvark: Add support for masking MSI interrupts -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -We should not unmask MSIs at setup, but only when kernel asks for them -to be unmasked. - -At setup, mask all MSIs, and implement IRQ chip callbacks for masking -and unmasking particular MSIs. - -Signed-off-by: Pali Rohár <pali@kernel.org> -Signed-off-by: Marek Behún <kabel@kernel.org> ---- - drivers/pci/controller/pci-aardvark.c | 54 ++++++++++++++++++++++++--- - 1 file changed, 49 insertions(+), 5 deletions(-) - ---- a/drivers/pci/controller/pci-aardvark.c -+++ b/drivers/pci/controller/pci-aardvark.c -@@ -281,6 +281,7 @@ struct advk_pcie { - raw_spinlock_t irq_lock; - struct irq_domain *msi_domain; - struct irq_domain *msi_inner_domain; -+ raw_spinlock_t msi_irq_lock; - DECLARE_BITMAP(msi_used, MSI_IRQ_NUM); - struct mutex msi_used_lock; - u16 msi_msg; -@@ -577,12 +578,10 @@ static void advk_pcie_setup_hw(struct ad - advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_REG); - advk_writel(pcie, PCIE_IRQ_ALL_MASK, HOST_CTRL_INT_STATUS_REG); - -- /* Disable All ISR0/1 Sources */ -+ /* Disable All ISR0/1 and MSI Sources */ - advk_writel(pcie, PCIE_ISR0_ALL_MASK, PCIE_ISR0_MASK_REG); - advk_writel(pcie, PCIE_ISR1_ALL_MASK, PCIE_ISR1_MASK_REG); -- -- /* Unmask all MSIs */ -- advk_writel(pcie, ~(u32)PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG); -+ advk_writel(pcie, PCIE_MSI_ALL_MASK, PCIE_MSI_MASK_REG); - - /* Unmask summary MSI interrupt */ - reg = advk_readl(pcie, PCIE_ISR0_MASK_REG); -@@ -1200,10 +1199,52 @@ static int advk_msi_set_affinity(struct - return -EINVAL; - } - -+static void advk_msi_irq_mask(struct irq_data *d) -+{ -+ struct advk_pcie *pcie = d->domain->host_data; -+ irq_hw_number_t hwirq = irqd_to_hwirq(d); -+ unsigned long flags; -+ u32 mask; -+ -+ raw_spin_lock_irqsave(&pcie->msi_irq_lock, flags); -+ mask = advk_readl(pcie, PCIE_MSI_MASK_REG); -+ mask |= BIT(hwirq); -+ advk_writel(pcie, mask, PCIE_MSI_MASK_REG); -+ raw_spin_unlock_irqrestore(&pcie->msi_irq_lock, flags); -+} -+ -+static void advk_msi_irq_unmask(struct irq_data *d) -+{ -+ struct advk_pcie *pcie = d->domain->host_data; -+ irq_hw_number_t hwirq = irqd_to_hwirq(d); -+ unsigned long flags; -+ u32 mask; -+ -+ raw_spin_lock_irqsave(&pcie->msi_irq_lock, flags); -+ mask = advk_readl(pcie, PCIE_MSI_MASK_REG); -+ mask &= ~BIT(hwirq); -+ advk_writel(pcie, mask, PCIE_MSI_MASK_REG); -+ raw_spin_unlock_irqrestore(&pcie->msi_irq_lock, flags); -+} -+ -+static void advk_msi_top_irq_mask(struct irq_data *d) -+{ -+ pci_msi_mask_irq(d); -+ irq_chip_mask_parent(d); -+} -+ -+static void advk_msi_top_irq_unmask(struct irq_data *d) -+{ -+ pci_msi_unmask_irq(d); -+ irq_chip_unmask_parent(d); -+} -+ - static struct irq_chip advk_msi_bottom_irq_chip = { - .name = "MSI", - .irq_compose_msi_msg = advk_msi_irq_compose_msi_msg, - .irq_set_affinity = advk_msi_set_affinity, -+ .irq_mask = advk_msi_irq_mask, -+ .irq_unmask = advk_msi_irq_unmask, - }; - - static int advk_msi_irq_domain_alloc(struct irq_domain *domain, -@@ -1293,7 +1334,9 @@ static const struct irq_domain_ops advk_ - }; - - static struct irq_chip advk_msi_irq_chip = { -- .name = "advk-MSI", -+ .name = "advk-MSI", -+ .irq_mask = advk_msi_top_irq_mask, -+ .irq_unmask = advk_msi_top_irq_unmask, - }; - - static struct msi_domain_info advk_msi_domain_info = { -@@ -1307,6 +1350,7 @@ static int advk_pcie_init_msi_irq_domain - struct device *dev = &pcie->pdev->dev; - phys_addr_t msi_msg_phys; - -+ raw_spin_lock_init(&pcie->msi_irq_lock); - mutex_init(&pcie->msi_used_lock); - - msi_msg_phys = virt_to_phys(&pcie->msi_msg); |