[PATCH v7 04/19] PCI: microchip: Rename data structure

From: Minda Chen
Date: Wed Sep 27 2023 - 06:08:24 EST

Next message: Minda Chen: "[PATCH v7 08/19] PCI: plda: Add event interrupt codes and IRQ domain ops"
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Add PLDA PCIe related data structures by rename
data structure name from mc_* to plda_*.

The modification includes:
mc_pcie --> plda_pcie_rp (Get most of data members)
mc_msi --> plda_msi

Signed-off-by: Minda Chen <minda.chen@xxxxxxxxxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
.../pci/controller/plda/pcie-microchip-host.c | 118 ++++++++----------
drivers/pci/controller/plda/pcie-plda.h | 20 +++
2 files changed, 71 insertions(+), 67 deletions(-)

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index a34ec6aad4be..f77aaf14909f 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -21,9 +21,6 @@
#include "../../pci.h"
#include "pcie-plda.h"

-/* Number of MSI IRQs */
-#define MC_MAX_NUM_MSI_IRQS 32
-
/* PCIe Bridge Phy and Controller Phy offsets */
#define MC_PCIE1_BRIDGE_ADDR 0x00008000u
#define MC_PCIE1_CTRL_ADDR 0x0000a000u
@@ -179,22 +176,9 @@ struct event_map {
u32 event_bit;
};

-struct mc_msi {
- struct mutex lock; /* Protect used bitmap */
- struct irq_domain *msi_domain;
- struct irq_domain *dev_domain;
- u32 num_vectors;
- u64 vector_phy;
- DECLARE_BITMAP(used, MC_MAX_NUM_MSI_IRQS);
-};
-
struct mc_pcie {
+ struct plda_pcie_rp plda;
void __iomem *axi_base_addr;
- struct device *dev;
- struct irq_domain *intx_domain;
- struct irq_domain *event_domain;
- raw_spinlock_t lock;
- struct mc_msi msi;
};

struct cause {
@@ -312,7 +296,7 @@ static struct mc_pcie *port;

static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam)
{
- struct mc_msi *msi = &port->msi;
+ struct plda_msi *msi = &port->plda.msi;
u16 reg;
u8 queue_size;

@@ -335,12 +319,11 @@ static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam)

static void mc_handle_msi(struct irq_desc *desc)
{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
+ struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
struct device *dev = port->dev;
- struct mc_msi *msi = &port->msi;
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ struct plda_msi *msi = &port->msi;
+ void __iomem *bridge_base_addr = port->bridge_addr;
unsigned long status;
u32 bit;
int ret;
@@ -364,9 +347,8 @@ static void mc_handle_msi(struct irq_desc *desc)

static void mc_msi_bottom_irq_ack(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ void __iomem *bridge_base_addr = port->bridge_addr;
u32 bitpos = data->hwirq;

writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
@@ -374,7 +356,7 @@ static void mc_msi_bottom_irq_ack(struct irq_data *data)

static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
phys_addr_t addr = port->msi.vector_phy;

msg->address_lo = lower_32_bits(addr);
@@ -401,8 +383,8 @@ static struct irq_chip mc_msi_bottom_irq_chip = {
static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *args)
{
- struct mc_pcie *port = domain->host_data;
- struct mc_msi *msi = &port->msi;
+ struct plda_pcie_rp *port = domain->host_data;
+ struct plda_msi *msi = &port->msi;
unsigned long bit;

mutex_lock(&msi->lock);
@@ -426,8 +408,8 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs)
{
struct irq_data *d = irq_domain_get_irq_data(domain, virq);
- struct mc_pcie *port = irq_data_get_irq_chip_data(d);
- struct mc_msi *msi = &port->msi;
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(d);
+ struct plda_msi *msi = &port->msi;

mutex_lock(&msi->lock);

@@ -457,11 +439,11 @@ static struct msi_domain_info mc_msi_domain_info = {
.chip = &mc_msi_irq_chip,
};

-static int mc_allocate_msi_domains(struct mc_pcie *port)
+static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
{
struct device *dev = port->dev;
struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
- struct mc_msi *msi = &port->msi;
+ struct plda_msi *msi = &port->msi;

mutex_init(&port->msi.lock);

@@ -485,11 +467,10 @@ static int mc_allocate_msi_domains(struct mc_pcie *port)

static void mc_handle_intx(struct irq_desc *desc)
{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
+ struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
struct device *dev = port->dev;
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ void __iomem *bridge_base_addr = port->bridge_addr;
unsigned long status;
u32 bit;
int ret;
@@ -513,9 +494,8 @@ static void mc_handle_intx(struct irq_desc *desc)

static void mc_ack_intx_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ void __iomem *bridge_base_addr = port->bridge_addr;
u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);

writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
@@ -523,9 +503,8 @@ static void mc_ack_intx_irq(struct irq_data *data)

static void mc_mask_intx_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ void __iomem *bridge_base_addr = port->bridge_addr;
unsigned long flags;
u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
u32 val;
@@ -539,9 +518,8 @@ static void mc_mask_intx_irq(struct irq_data *data)

static void mc_unmask_intx_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ void __iomem *bridge_base_addr = port->bridge_addr;
unsigned long flags;
u32 mask = BIT(data->hwirq + PM_MSI_INT_INTX_SHIFT);
u32 val;
@@ -630,21 +608,22 @@ static u32 local_events(struct mc_pcie *port)
return val;
}

-static u32 get_events(struct mc_pcie *port)
+static u32 get_events(struct plda_pcie_rp *port)
{
+ struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
u32 events = 0;

- events |= pcie_events(port);
- events |= sec_errors(port);
- events |= ded_errors(port);
- events |= local_events(port);
+ events |= pcie_events(mc_port);
+ events |= sec_errors(mc_port);
+ events |= ded_errors(mc_port);
+ events |= local_events(mc_port);

return events;
}

static irqreturn_t mc_event_handler(int irq, void *dev_id)
{
- struct mc_pcie *port = dev_id;
+ struct plda_pcie_rp *port = dev_id;
struct device *dev = port->dev;
struct irq_data *data;

@@ -660,7 +639,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)

static void mc_handle_event(struct irq_desc *desc)
{
- struct mc_pcie *port = irq_desc_get_handler_data(desc);
+ struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
unsigned long events;
u32 bit;
struct irq_chip *chip = irq_desc_get_chip(desc);
@@ -677,12 +656,13 @@ static void mc_handle_event(struct irq_desc *desc)

static void mc_ack_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;

- addr = port->axi_base_addr + event_descs[event].base +
+ addr = mc_port->axi_base_addr + event_descs[event].base +
event_descs[event].offset;
mask = event_descs[event].mask;
mask |= event_descs[event].enb_mask;
@@ -692,13 +672,14 @@ static void mc_ack_event_irq(struct irq_data *data)

static void mc_mask_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;
u32 val;

- addr = port->axi_base_addr + event_descs[event].base +
+ addr = mc_port->axi_base_addr + event_descs[event].base +
event_descs[event].mask_offset;
mask = event_descs[event].mask;
if (event_descs[event].enb_mask) {
@@ -722,13 +703,14 @@ static void mc_mask_event_irq(struct irq_data *data)

static void mc_unmask_event_irq(struct irq_data *data)
{
- struct mc_pcie *port = irq_data_get_irq_chip_data(data);
+ struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
+ struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
u32 event = data->hwirq;
void __iomem *addr;
u32 mask;
u32 val;

- addr = port->axi_base_addr + event_descs[event].base +
+ addr = mc_port->axi_base_addr + event_descs[event].base +
event_descs[event].mask_offset;
mask = event_descs[event].mask;

@@ -816,7 +798,7 @@ static int mc_pcie_init_clks(struct device *dev)
return 0;
}

-static int mc_pcie_init_irq_domains(struct mc_pcie *port)
+static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
{
struct device *dev = port->dev;
struct device_node *node = dev->of_node;
@@ -894,10 +876,9 @@ static void mc_pcie_setup_window(void __iomem *bridge_base_addr, u32 index,
}

static int mc_pcie_setup_windows(struct platform_device *pdev,
- struct mc_pcie *port)
+ struct plda_pcie_rp *port)
{
- void __iomem *bridge_base_addr =
- port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ void __iomem *bridge_base_addr = port->bridge_addr;
struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
struct resource_entry *entry;
u64 pci_addr;
@@ -976,7 +957,7 @@ static void mc_disable_interrupts(struct mc_pcie *port)
writel_relaxed(GENMASK(31, 0), bridge_base_addr + ISTATUS_HOST);
}

-static int mc_init_interrupts(struct platform_device *pdev, struct mc_pcie *port)
+static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
{
struct device *dev = &pdev->dev;
int irq;
@@ -1049,12 +1030,12 @@ static int mc_platform_init(struct pci_config_window *cfg)
mc_pcie_enable_msi(port, cfg->win);

/* Configure non-config space outbound ranges */
- ret = mc_pcie_setup_windows(pdev, port);
+ ret = mc_pcie_setup_windows(pdev, &port->plda);
if (ret)
return ret;

/* Address translation is up; safe to enable interrupts */
- ret = mc_init_interrupts(pdev, port);
+ ret = mc_init_interrupts(pdev, &port->plda);
if (ret)
return ret;

@@ -1065,6 +1046,7 @@ static int mc_host_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
void __iomem *bridge_base_addr;
+ struct plda_pcie_rp *plda;
int ret;
u32 val;

@@ -1072,7 +1054,8 @@ static int mc_host_probe(struct platform_device *pdev)
if (!port)
return -ENOMEM;

- port->dev = dev;
+ plda = &port->plda;
+ plda->dev = dev;

port->axi_base_addr = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(port->axi_base_addr))
@@ -1081,6 +1064,7 @@ static int mc_host_probe(struct platform_device *pdev)
mc_disable_interrupts(port);

bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
+ plda->bridge_addr = bridge_base_addr;

/* Allow enabling MSI by disabling MSI-X */
val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0);
@@ -1092,10 +1076,10 @@ static int mc_host_probe(struct platform_device *pdev)
val &= NUM_MSI_MSGS_MASK;
val >>= NUM_MSI_MSGS_SHIFT;

- port->msi.num_vectors = 1 << val;
+ plda->msi.num_vectors = 1 << val;

/* Pick vector address from design */
- port->msi.vector_phy = readl_relaxed(bridge_base_addr + IMSI_ADDR);
+ plda->msi.vector_phy = readl_relaxed(bridge_base_addr + IMSI_ADDR);

ret = mc_pcie_init_clks(dev);
if (ret) {
diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h
index 727fc54312c9..d04a571404b9 100644
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -6,6 +6,9 @@
#ifndef _PCIE_PLDA_H
#define _PCIE_PLDA_H

+/* Number of MSI IRQs */
+#define PLDA_MAX_NUM_MSI_IRQS 32
+
/* PCIe Bridge Phy Regs */
#define PCIE_PCI_IRQ_DW0 0xa8
#define MSIX_CAP_MASK BIT(31)
@@ -99,4 +102,21 @@
#define EVENT_PM_MSI_INT_SYS_ERR 12
#define NUM_PLDA_EVENTS 13

+struct plda_msi {
+ struct mutex lock; /* Protect used bitmap */
+ struct irq_domain *msi_domain;
+ struct irq_domain *dev_domain;
+ u32 num_vectors;
+ u64 vector_phy;
+ DECLARE_BITMAP(used, PLDA_MAX_NUM_MSI_IRQS);
+};
+
+struct plda_pcie_rp {
+ struct device *dev;
+ struct irq_domain *intx_domain;
+ struct irq_domain *event_domain;
+ raw_spinlock_t lock;
+ struct plda_msi msi;
+ void __iomem *bridge_addr;
+};
#endif
--
2.17.1

Next message: Minda Chen: "[PATCH v7 08/19] PCI: plda: Add event interrupt codes and IRQ domain ops"
Previous message: Jann Horn: "potential new userfaultfd vs khugepaged conflict [was: Re: [PATCH v2 2/3] userfaultfd: UFFDIO_REMAP uABI]"
In reply to: Minda Chen: "[PATCH v7 0/19] Refactoring Microchip PCIe driver and add StarFive PCIe"
Next in thread: Minda Chen: "[PATCH v7 08/19] PCI: plda: Add event interrupt codes and IRQ domain ops"
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