From: Kishon Vijay Abraham I <kishon@ti.com>
To: Murali Karicheri <m-karicheri2@ti.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Jingoo Han <jingoohan1@gmail.com>,
Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
<linux-pci@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH v4 7/9] PCI: keystone: Use Keystone specific msi_irq_chip
Date: Thu, 21 Feb 2019 15:45:16 +0530 [thread overview]
Message-ID: <20190221101518.22604-8-kishon@ti.com> (raw)
In-Reply-To: <20190221101518.22604-1-kishon@ti.com>
Use Keystone specific msi_irq_chip to configure the MSI controller
logic in the PCIe keystone wrapper instead of using the default
Designware msi_irq chip (dw_pci_msi_bottom_irq_chip) with
callback functions for configuring the Keystone MSI controller.
This will help to remove Keystone specific callback functions
added in dw_pcie_host_ops.
Move the default msi_irq_chip assignment to dw_pcie_host_init since
platforms that doesn't use the default msi_irq_chip will assign
msi_irq_chip in msi_host_init() callback.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
drivers/pci/controller/dwc/pci-keystone.c | 96 ++++++++++++++-----
.../pci/controller/dwc/pcie-designware-host.c | 5 +-
2 files changed, 74 insertions(+), 27 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 16feab853a7b..88a60e1a1486 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -104,14 +104,6 @@ struct keystone_pcie {
struct resource app;
};
-static phys_addr_t ks_pcie_get_msi_addr(struct pcie_port *pp)
-{
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
- struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
-
- return ks_pcie->app.start + MSI_IRQ;
-}
-
static u32 ks_pcie_app_readl(struct keystone_pcie *ks_pcie, u32 offset)
{
return readl(ks_pcie->va_app_base + offset);
@@ -123,11 +115,14 @@ static void ks_pcie_app_writel(struct keystone_pcie *ks_pcie, u32 offset,
writel(val, ks_pcie->va_app_base + offset);
}
-static void ks_pcie_msi_irq_ack(int irq, struct pcie_port *pp)
+static void ks_pcie_msi_irq_ack(struct irq_data *data)
{
- u32 reg_offset, bit_pos;
+ struct pcie_port *pp = irq_data_get_irq_chip_data(data);
struct keystone_pcie *ks_pcie;
+ u32 irq = data->hwirq;
struct dw_pcie *pci;
+ u32 reg_offset;
+ u32 bit_pos;
pci = to_dw_pcie_from_pp(pp);
ks_pcie = to_keystone_pcie(pci);
@@ -140,34 +135,91 @@ static void ks_pcie_msi_irq_ack(int irq, struct pcie_port *pp)
ks_pcie_app_writel(ks_pcie, IRQ_EOI, reg_offset + MSI_IRQ_OFFSET);
}
-static void ks_pcie_msi_set_irq(struct pcie_port *pp, int irq)
+static void ks_pcie_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
{
- u32 reg_offset, bit_pos;
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
- struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
+ struct pcie_port *pp = irq_data_get_irq_chip_data(data);
+ struct keystone_pcie *ks_pcie;
+ struct dw_pcie *pci;
+ u64 msi_target;
+
+ pci = to_dw_pcie_from_pp(pp);
+ ks_pcie = to_keystone_pcie(pci);
+
+ msi_target = ks_pcie->app.start + MSI_IRQ;
+ msg->address_lo = lower_32_bits(msi_target);
+ msg->address_hi = upper_32_bits(msi_target);
+ msg->data = data->hwirq;
+
+ dev_dbg(pci->dev, "msi#%d address_hi %#x address_lo %#x\n",
+ (int)data->hwirq, msg->address_hi, msg->address_lo);
+}
+
+static int ks_pcie_msi_set_affinity(struct irq_data *irq_data,
+ const struct cpumask *mask, bool force)
+{
+ return -EINVAL;
+}
+
+static void ks_pcie_msi_mask(struct irq_data *data)
+{
+ struct pcie_port *pp = irq_data_get_irq_chip_data(data);
+ struct keystone_pcie *ks_pcie;
+ u32 irq = data->hwirq;
+ struct dw_pcie *pci;
+ unsigned long flags;
+ u32 reg_offset;
+ u32 bit_pos;
+
+ raw_spin_lock_irqsave(&pp->lock, flags);
+
+ pci = to_dw_pcie_from_pp(pp);
+ ks_pcie = to_keystone_pcie(pci);
reg_offset = irq % 8;
bit_pos = irq >> 3;
- ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_SET(reg_offset),
+ ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_CLR(reg_offset),
BIT(bit_pos));
+
+ raw_spin_unlock_irqrestore(&pp->lock, flags);
}
-static void ks_pcie_msi_clear_irq(struct pcie_port *pp, int irq)
+static void ks_pcie_msi_unmask(struct irq_data *data)
{
- u32 reg_offset, bit_pos;
- struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
- struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
+ struct pcie_port *pp = irq_data_get_irq_chip_data(data);
+ struct keystone_pcie *ks_pcie;
+ u32 irq = data->hwirq;
+ struct dw_pcie *pci;
+ unsigned long flags;
+ u32 reg_offset;
+ u32 bit_pos;
+
+ raw_spin_lock_irqsave(&pp->lock, flags);
+
+ pci = to_dw_pcie_from_pp(pp);
+ ks_pcie = to_keystone_pcie(pci);
reg_offset = irq % 8;
bit_pos = irq >> 3;
- ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_CLR(reg_offset),
+ ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_SET(reg_offset),
BIT(bit_pos));
+
+ raw_spin_unlock_irqrestore(&pp->lock, flags);
}
+static struct irq_chip ks_pcie_msi_irq_chip = {
+ .name = "KEYSTONE-PCI-MSI",
+ .irq_ack = ks_pcie_msi_irq_ack,
+ .irq_compose_msi_msg = ks_pcie_compose_msi_msg,
+ .irq_set_affinity = ks_pcie_msi_set_affinity,
+ .irq_mask = ks_pcie_msi_mask,
+ .irq_unmask = ks_pcie_msi_unmask,
+};
+
static int ks_pcie_msi_host_init(struct pcie_port *pp)
{
+ pp->msi_irq_chip = &ks_pcie_msi_irq_chip;
return dw_pcie_allocate_domains(pp);
}
@@ -816,11 +868,7 @@ static const struct dw_pcie_host_ops ks_pcie_host_ops = {
.rd_other_conf = ks_pcie_rd_other_conf,
.wr_other_conf = ks_pcie_wr_other_conf,
.host_init = ks_pcie_host_init,
- .msi_set_irq = ks_pcie_msi_set_irq,
- .msi_clear_irq = ks_pcie_msi_clear_irq,
- .get_msi_addr = ks_pcie_get_msi_addr,
.msi_host_init = ks_pcie_msi_host_init,
- .msi_irq_ack = ks_pcie_msi_irq_ack,
.scan_bus = ks_pcie_v3_65_scan_bus,
};
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 042de09b0451..72cfedce5af1 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -277,9 +277,6 @@ int dw_pcie_allocate_domains(struct pcie_port *pp)
struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
struct fwnode_handle *fwnode = of_node_to_fwnode(pci->dev->of_node);
- if (!pp->msi_irq_chip)
- pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip;
-
pp->irq_domain = irq_domain_create_linear(fwnode, pp->num_vectors,
&dw_pcie_msi_domain_ops, pp);
if (!pp->irq_domain) {
@@ -462,6 +459,8 @@ int dw_pcie_host_init(struct pcie_port *pp)
}
if (!pp->ops->msi_host_init) {
+ pp->msi_irq_chip = &dw_pci_msi_bottom_irq_chip;
+
ret = dw_pcie_allocate_domains(pp);
if (ret)
goto error;
--
2.17.1
next prev parent reply other threads:[~2019-02-21 10:20 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-21 10:15 [PATCH v4 0/9] PCI: DWC/Keystone: MSI configuration cleanup Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 1/9] PCI: keystone: Cleanup interrupt related macros Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 2/9] PCI: keystone: Add separate functions for configuring MSI and legacy interrupt Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 3/9] PCI: keystone: Convert to using hierarchy domain for legacy interrupts Kishon Vijay Abraham I
2019-02-21 16:24 ` Lorenzo Pieralisi
2019-02-23 12:11 ` Marc Zyngier
2019-03-07 9:12 ` Kishon Vijay Abraham I
2019-03-07 12:02 ` Marc Zyngier
2019-03-18 5:33 ` Kishon Vijay Abraham I
2019-03-18 11:16 ` Marc Zyngier
2019-03-19 10:52 ` Kishon Vijay Abraham I
2019-03-19 11:35 ` Marc Zyngier
2019-02-21 10:15 ` [PATCH v4 4/9] PCI: keystone: Use hwirq to get the MSI IRQ number offset Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 5/9] PCI: keystone: Cleanup ks_pcie_msi_irq_handler Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 6/9] PCI: dwc: Add support to use non default msi_irq_chip Kishon Vijay Abraham I
2019-02-21 10:15 ` Kishon Vijay Abraham I [this message]
2019-02-21 10:15 ` [PATCH v4 8/9] PCI: dwc: Remove Keystone specific dw_pcie_host_ops Kishon Vijay Abraham I
2019-02-21 10:15 ` [PATCH v4 9/9] PCI: dwc: Do not write to MSI control registers if the platform doesn't use it Kishon Vijay Abraham I
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