diff options
Diffstat (limited to 'target/linux/generic/pending-5.10/850-0003-PCI-aardvark-Fix-support-for-MSI-interrupts.patch')
| -rw-r--r-- | target/linux/generic/pending-5.10/850-0003-PCI-aardvark-Fix-support-for-MSI-interrupts.patch | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/target/linux/generic/pending-5.10/850-0003-PCI-aardvark-Fix-support-for-MSI-interrupts.patch b/target/linux/generic/pending-5.10/850-0003-PCI-aardvark-Fix-support-for-MSI-interrupts.patch deleted file mode 100644 index 813cbe5148..0000000000 --- a/target/linux/generic/pending-5.10/850-0003-PCI-aardvark-Fix-support-for-MSI-interrupts.patch +++ /dev/null @@ -1,72 +0,0 @@ -From bb03b126ea6c9e57177b537dd022246fa5dbef16 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali@kernel.org> -Date: Fri, 12 Feb 2021 16:24:07 +0100 -Subject: [PATCH] PCI: aardvark: Fix support for MSI interrupts -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -Aardvark hardware supports Multi-MSI and MSI_FLAG_MULTI_PCI_MSI is already -set for the MSI chip. But when allocating MSI interrupt numbers for -Multi-MSI, the numbers need to be properly aligned, otherwise endpoint -devices send MSI interrupt with incorrect numbers. - -Fix this issue by using function bitmap_find_free_region() instead of -bitmap_find_next_zero_area(). - -To ensure that aligned MSI interrupt numbers are used by endpoint devices, -we cannot use Linux virtual irq numbers (as they are random and not -properly aligned). Instead we need to use the aligned hwirq numbers. - -This change fixes receiving MSI interrupts on Armada 3720 boards and -allows using NVMe disks which use Multi-MSI feature with 3 interrupts. - -Without this NVMe disks freeze booting as linux nvme-core.c is waiting -60s for an interrupt. - -Signed-off-by: Pali Rohár <pali@kernel.org> -Signed-off-by: Marek Behún <kabel@kernel.org> ---- - drivers/pci/controller/pci-aardvark.c | 16 ++++++---------- - 1 file changed, 6 insertions(+), 10 deletions(-) - ---- a/drivers/pci/controller/pci-aardvark.c -+++ b/drivers/pci/controller/pci-aardvark.c -@@ -1191,7 +1191,7 @@ static void advk_msi_irq_compose_msi_msg - - msg->address_lo = lower_32_bits(msi_msg); - msg->address_hi = upper_32_bits(msi_msg); -- msg->data = data->irq; -+ msg->data = data->hwirq; - } - - static int advk_msi_set_affinity(struct irq_data *irq_data, -@@ -1208,15 +1208,11 @@ static int advk_msi_irq_domain_alloc(str - int hwirq, i; - - mutex_lock(&pcie->msi_used_lock); -- hwirq = bitmap_find_next_zero_area(pcie->msi_used, MSI_IRQ_NUM, -- 0, nr_irqs, 0); -- if (hwirq >= MSI_IRQ_NUM) { -- mutex_unlock(&pcie->msi_used_lock); -- return -ENOSPC; -- } -- -- bitmap_set(pcie->msi_used, hwirq, nr_irqs); -+ hwirq = bitmap_find_free_region(pcie->msi_used, MSI_IRQ_NUM, -+ order_base_2(nr_irqs)); - mutex_unlock(&pcie->msi_used_lock); -+ if (hwirq < 0) -+ return -ENOSPC; - - for (i = 0; i < nr_irqs; i++) - irq_domain_set_info(domain, virq + i, hwirq + i, -@@ -1234,7 +1230,7 @@ static void advk_msi_irq_domain_free(str - struct advk_pcie *pcie = domain->host_data; - - mutex_lock(&pcie->msi_used_lock); -- bitmap_clear(pcie->msi_used, d->hwirq, nr_irqs); -+ bitmap_release_region(pcie->msi_used, d->hwirq, order_base_2(nr_irqs)); - mutex_unlock(&pcie->msi_used_lock); - } - |