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PCI: microchip: Rename interrupt related functions

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Rename mc_* to plda_* for IRQ functions and related IRQ domain ops data
instances.

MSI, INTx interrupt code and IRQ init code can all be re-used.

Link: https://lore.kernel.org/linux-pci/20240328091835.14797-11-minda.chen@starfivetech.com
Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
This commit is contained in:
Minda Chen 2024-03-28 17:18:23 +08:00 committed by Bjorn Helgaas
parent 39bd5f8225
commit f966c028cf
1 changed files with 57 additions and 52 deletions
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109
drivers/pci/controller/plda/pcie-microchip-host.c
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@ -318,7 +318,7 @@ static void mc_pcie_enable_msi(struct mc_pcie *port, void __iomem *ecam)
ecam + MC_MSI_CAP_CTRL_OFFSET + PCI_MSI_ADDRESS_HI);
}
static void mc_handle_msi(struct irq_desc *desc)
static void plda_handle_msi(struct irq_desc *desc)
{
struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
@ -346,7 +346,7 @@ static void mc_handle_msi(struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
static void mc_msi_bottom_irq_ack(struct irq_data *data)
static void plda_msi_bottom_irq_ack(struct irq_data *data)
{
struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
void __iomem *bridge_base_addr = port->bridge_addr;
@ -355,7 +355,7 @@ static void mc_msi_bottom_irq_ack(struct irq_data *data)
writel_relaxed(BIT(bitpos), bridge_base_addr + ISTATUS_MSI);
}
static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
static void plda_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
{
struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
phys_addr_t addr = port->msi.vector_phy;
@ -368,21 +368,23 @@ static void mc_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
(int)data->hwirq, msg->address_hi, msg->address_lo);
}
static int mc_msi_set_affinity(struct irq_data *irq_data,
const struct cpumask *mask, bool force)
static int plda_msi_set_affinity(struct irq_data *irq_data,
const struct cpumask *mask, bool force)
{
return -EINVAL;
}
static struct irq_chip mc_msi_bottom_irq_chip = {
.name = "Microchip MSI",
.irq_ack = mc_msi_bottom_irq_ack,
.irq_compose_msi_msg = mc_compose_msi_msg,
.irq_set_affinity = mc_msi_set_affinity,
static struct irq_chip plda_msi_bottom_irq_chip = {
.name = "PLDA MSI",
.irq_ack = plda_msi_bottom_irq_ack,
.irq_compose_msi_msg = plda_compose_msi_msg,
.irq_set_affinity = plda_msi_set_affinity,
};
static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs, void *args)
static int plda_irq_msi_domain_alloc(struct irq_domain *domain,
unsigned int virq,
unsigned int nr_irqs,
void *args)
{
struct plda_pcie_rp *port = domain->host_data;
struct plda_msi *msi = &port->msi;
@ -397,7 +399,7 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
set_bit(bit, msi->used);
irq_domain_set_info(domain, virq, bit, &mc_msi_bottom_irq_chip,
irq_domain_set_info(domain, virq, bit, &plda_msi_bottom_irq_chip,
domain->host_data, handle_edge_irq, NULL, NULL);
mutex_unlock(&msi->lock);
@ -405,8 +407,9 @@ static int mc_irq_msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
return 0;
}
static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
unsigned int nr_irqs)
static void plda_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 plda_pcie_rp *port = irq_data_get_irq_chip_data(d);
@ -423,24 +426,24 @@ static void mc_irq_msi_domain_free(struct irq_domain *domain, unsigned int virq,
}
static const struct irq_domain_ops msi_domain_ops = {
.alloc = mc_irq_msi_domain_alloc,
.free = mc_irq_msi_domain_free,
.alloc = plda_irq_msi_domain_alloc,
.free = plda_irq_msi_domain_free,
};
static struct irq_chip mc_msi_irq_chip = {
.name = "Microchip PCIe MSI",
static struct irq_chip plda_msi_irq_chip = {
.name = "PLDA PCIe MSI",
.irq_ack = irq_chip_ack_parent,
.irq_mask = pci_msi_mask_irq,
.irq_unmask = pci_msi_unmask_irq,
};
static struct msi_domain_info mc_msi_domain_info = {
static struct msi_domain_info plda_msi_domain_info = {
.flags = (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
MSI_FLAG_PCI_MSIX),
.chip = &mc_msi_irq_chip,
.chip = &plda_msi_irq_chip,
};
static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
static int plda_allocate_msi_domains(struct plda_pcie_rp *port)
{
struct device *dev = port->dev;
struct fwnode_handle *fwnode = of_node_to_fwnode(dev->of_node);
@ -455,7 +458,8 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
return -ENOMEM;
}
msi->msi_domain = pci_msi_create_irq_domain(fwnode, &mc_msi_domain_info,
msi->msi_domain = pci_msi_create_irq_domain(fwnode,
&plda_msi_domain_info,
msi->dev_domain);
if (!msi->msi_domain) {
dev_err(dev, "failed to create MSI domain\n");
@ -466,7 +470,7 @@ static int mc_allocate_msi_domains(struct plda_pcie_rp *port)
return 0;
}
static void mc_handle_intx(struct irq_desc *desc)
static void plda_handle_intx(struct irq_desc *desc)
{
struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
struct irq_chip *chip = irq_desc_get_chip(desc);
@ -493,7 +497,7 @@ static void mc_handle_intx(struct irq_desc *desc)
chained_irq_exit(chip, desc);
}
static void mc_ack_intx_irq(struct irq_data *data)
static void plda_ack_intx_irq(struct irq_data *data)
{
struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
void __iomem *bridge_base_addr = port->bridge_addr;
@ -502,7 +506,7 @@ static void mc_ack_intx_irq(struct irq_data *data)
writel_relaxed(mask, bridge_base_addr + ISTATUS_LOCAL);
}
static void mc_mask_intx_irq(struct irq_data *data)
static void plda_mask_intx_irq(struct irq_data *data)
{
struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
void __iomem *bridge_base_addr = port->bridge_addr;
@ -517,7 +521,7 @@ static void mc_mask_intx_irq(struct irq_data *data)
raw_spin_unlock_irqrestore(&port->lock, flags);
}
static void mc_unmask_intx_irq(struct irq_data *data)
static void plda_unmask_intx_irq(struct irq_data *data)
{
struct plda_pcie_rp *port = irq_data_get_irq_chip_data(data);
void __iomem *bridge_base_addr = port->bridge_addr;
@ -532,24 +536,24 @@ static void mc_unmask_intx_irq(struct irq_data *data)
raw_spin_unlock_irqrestore(&port->lock, flags);
}
static struct irq_chip mc_intx_irq_chip = {
.name = "Microchip PCIe INTx",
.irq_ack = mc_ack_intx_irq,
.irq_mask = mc_mask_intx_irq,
.irq_unmask = mc_unmask_intx_irq,
static struct irq_chip plda_intx_irq_chip = {
.name = "PLDA PCIe INTx",
.irq_ack = plda_ack_intx_irq,
.irq_mask = plda_mask_intx_irq,
.irq_unmask = plda_unmask_intx_irq,
};
static int mc_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
irq_hw_number_t hwirq)
static int plda_pcie_intx_map(struct irq_domain *domain, unsigned int irq,
irq_hw_number_t hwirq)
{
irq_set_chip_and_handler(irq, &mc_intx_irq_chip, handle_level_irq);
irq_set_chip_and_handler(irq, &plda_intx_irq_chip, handle_level_irq);
irq_set_chip_data(irq, domain->host_data);
return 0;
}
static const struct irq_domain_ops intx_domain_ops = {
.map = mc_pcie_intx_map,
.map = plda_pcie_intx_map,
};
static inline u32 reg_to_event(u32 reg, struct event_map field)
@ -609,7 +613,7 @@ static u32 local_events(struct mc_pcie *port)
return val;
}
static u32 get_events(struct plda_pcie_rp *port)
static u32 mc_get_events(struct plda_pcie_rp *port)
{
struct mc_pcie *mc_port = container_of(port, struct mc_pcie, plda);
u32 events = 0;
@ -638,7 +642,7 @@ static irqreturn_t mc_event_handler(int irq, void *dev_id)
return IRQ_HANDLED;
}
static void mc_handle_event(struct irq_desc *desc)
static void plda_handle_event(struct irq_desc *desc)
{
struct plda_pcie_rp *port = irq_desc_get_handler_data(desc);
unsigned long events;
@ -647,7 +651,7 @@ static void mc_handle_event(struct irq_desc *desc)
chained_irq_enter(chip, desc);
events = get_events(port);
events = mc_get_events(port);
for_each_set_bit(bit, &events, NUM_EVENTS)
generic_handle_domain_irq(port->event_domain, bit);
@ -741,8 +745,8 @@ static struct irq_chip mc_event_irq_chip = {
.irq_unmask = mc_unmask_event_irq,
};
static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
irq_hw_number_t hwirq)
static int plda_pcie_event_map(struct irq_domain *domain, unsigned int irq,
irq_hw_number_t hwirq)
{
irq_set_chip_and_handler(irq, &mc_event_irq_chip, handle_level_irq);
irq_set_chip_data(irq, domain->host_data);
@ -750,8 +754,8 @@ static int mc_pcie_event_map(struct irq_domain *domain, unsigned int irq,
return 0;
}
static const struct irq_domain_ops event_domain_ops = {
.map = mc_pcie_event_map,
static const struct irq_domain_ops plda_event_domain_ops = {
.map = plda_pcie_event_map,
};
static inline void mc_pcie_deinit_clk(void *data)
@ -799,7 +803,7 @@ static int mc_pcie_init_clks(struct device *dev)
return 0;
}
static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
static int plda_pcie_init_irq_domains(struct plda_pcie_rp *port)
{
struct device *dev = port->dev;
struct device_node *node = dev->of_node;
@ -813,7 +817,8 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
}
port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
&event_domain_ops, port);
&plda_event_domain_ops,
port);
if (!port->event_domain) {
dev_err(dev, "failed to get event domain\n");
of_node_put(pcie_intc_node);
@ -835,7 +840,7 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
of_node_put(pcie_intc_node);
raw_spin_lock_init(&port->lock);
return mc_allocate_msi_domains(port);
return plda_allocate_msi_domains(port);
}
static inline void mc_clear_secs(struct mc_pcie *port)
@ -898,14 +903,14 @@ 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 plda_pcie_rp *port)
static int plda_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp *port)
{
struct device *dev = &pdev->dev;
int irq;
int i, intx_irq, msi_irq, event_irq;
int ret;
ret = mc_pcie_init_irq_domains(port);
ret = plda_pcie_init_irq_domains(port);
if (ret) {
dev_err(dev, "failed creating IRQ domains\n");
return ret;
@ -938,7 +943,7 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
}
/* Plug the INTx chained handler */
irq_set_chained_handler_and_data(intx_irq, mc_handle_intx, port);
irq_set_chained_handler_and_data(intx_irq, plda_handle_intx, port);
msi_irq = irq_create_mapping(port->event_domain,
EVENT_LOCAL_PM_MSI_INT_MSI);
@ -946,10 +951,10 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
return -ENXIO;
/* Plug the MSI chained handler */
irq_set_chained_handler_and_data(msi_irq, mc_handle_msi, port);
irq_set_chained_handler_and_data(msi_irq, plda_handle_msi, port);
/* Plug the main event chained handler */
irq_set_chained_handler_and_data(irq, mc_handle_event, port);
irq_set_chained_handler_and_data(irq, plda_handle_event, port);
return 0;
}
@ -976,7 +981,7 @@ static int mc_platform_init(struct pci_config_window *cfg)
return ret;
/* Address translation is up; safe to enable interrupts */
ret = mc_init_interrupts(pdev, &port->plda);
ret = plda_init_interrupts(pdev, &port->plda);
if (ret)
return ret;