diff mbox series

[v3,07/11] PCI: microchip: Rename IRQ init function

Message ID 20230814082016.104181-8-minda.chen@starfivetech.com (mailing list archive)
State Superseded
Delegated to: Krzysztof Wilczyński
Headers show
Series Refactoring Microchip PCIe driver and add StarFive PCIe | expand

Commit Message

Minda Chen Aug. 14, 2023, 8:20 a.m. UTC 
Rename IRQ init function and prepare for re-use
IRQ init function.

rename list:
mc_init_interrupts -> plda_init_interrupts
mc_pcie_init_irq_domain-> plda_pcie_init_irq_domains

Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
---
 .../pci/controller/plda/pcie-microchip-host.c | 37 +++++++++++++------
 drivers/pci/controller/plda/pcie-plda.h       |  7 ++++
 2 files changed, 33 insertions(+), 11 deletions(-)

Comments

Conor Dooley Aug. 14, 2023, 1:55 p.m. UTC | #1 
On Mon, Aug 14, 2023 at 04:20:12PM +0800, Minda Chen wrote:
> Rename IRQ init function and prepare for re-use
> IRQ init function.
> 
> rename list:
> mc_init_interrupts -> plda_init_interrupts
> mc_pcie_init_irq_domain-> plda_pcie_init_irq_domains
> 
> Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
> ---
>  .../pci/controller/plda/pcie-microchip-host.c | 37 +++++++++++++------
>  drivers/pci/controller/plda/pcie-plda.h       |  7 ++++
>  2 files changed, 33 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
> index b42f1aac3ec3..140e7ca1a5cb 100644
> --- a/drivers/pci/controller/plda/pcie-microchip-host.c
> +++ b/drivers/pci/controller/plda/pcie-microchip-host.c
> @@ -559,7 +559,7 @@ 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 plda_evt *evt)
>  {
>  	struct device *dev = port->dev;
>  	struct device_node *node = dev->of_node;
> @@ -572,8 +572,8 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
>  		return -EINVAL;
>  	}
>  
> -	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
> -						   &event_domain_ops, port);
> +	port->event_domain = irq_domain_add_linear(pcie_intc_node, port->num_events,
> +						   evt->domain_ops, port);
>  	if (!port->event_domain) {
>  		dev_err(dev, "failed to get event domain\n");
>  		of_node_put(pcie_intc_node);
> @@ -658,14 +658,15 @@ 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 plda_evt *evt)
>  {
>  	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, evt);
>  	if (ret) {
>  		dev_err(dev, "failed creating IRQ domains\n");
>  		return ret;
> @@ -675,15 +676,18 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
>  	if (irq < 0)
>  		return -ENODEV;
>  
> -	for (i = 0; i < NUM_EVENTS; i++) {
> +	for (i = 0; i < port->num_events; i++) {
>  		event_irq = irq_create_mapping(port->event_domain, i);
>  		if (!event_irq) {
>  			dev_err(dev, "failed to map hwirq %d\n", i);
>  			return -ENXIO;
>  		}
>  
> -		ret = devm_request_irq(dev, event_irq, mc_event_handler,
> -				       0, event_cause[i].sym, port);
> +		if (evt->request_evt_irq)
> +			ret = evt->request_evt_irq(port, event_irq, i);
> +		else
> +			ret = devm_request_irq(dev, event_irq, plda_event_handler,
> +					       0, NULL, port);

Is there a particular reason this if/else addition ended up in this
patch, but the if/else addition in plda_handle_event() ended up in the
next one?

Otherwise, this looks fine to me.
Minda Chen Aug. 15, 2023, 10:43 a.m. UTC | #2 
On 2023/8/14 21:55, Conor Dooley wrote:
> On Mon, Aug 14, 2023 at 04:20:12PM +0800, Minda Chen wrote:
>> Rename IRQ init function and prepare for re-use
>> IRQ init function.
>> 
>> rename list:
>> mc_init_interrupts -> plda_init_interrupts
>> mc_pcie_init_irq_domain-> plda_pcie_init_irq_domains
>> 
>> Signed-off-by: Minda Chen <minda.chen@starfivetech.com>
>> ---
>>  .../pci/controller/plda/pcie-microchip-host.c | 37 +++++++++++++------
>>  drivers/pci/controller/plda/pcie-plda.h       |  7 ++++
>>  2 files changed, 33 insertions(+), 11 deletions(-)
>> 
>> diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
>> index b42f1aac3ec3..140e7ca1a5cb 100644
>> --- a/drivers/pci/controller/plda/pcie-microchip-host.c
>> +++ b/drivers/pci/controller/plda/pcie-microchip-host.c
>> @@ -559,7 +559,7 @@ 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 plda_evt *evt)
>>  {
>>  	struct device *dev = port->dev;
>>  	struct device_node *node = dev->of_node;
>> @@ -572,8 +572,8 @@ static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
>>  		return -EINVAL;
>>  	}
>>  
>> -	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
>> -						   &event_domain_ops, port);
>> +	port->event_domain = irq_domain_add_linear(pcie_intc_node, port->num_events,
>> +						   evt->domain_ops, port);
>>  	if (!port->event_domain) {
>>  		dev_err(dev, "failed to get event domain\n");
>>  		of_node_put(pcie_intc_node);
>> @@ -658,14 +658,15 @@ 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 plda_evt *evt)
>>  {
>>  	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, evt);
>>  	if (ret) {
>>  		dev_err(dev, "failed creating IRQ domains\n");
>>  		return ret;
>> @@ -675,15 +676,18 @@ static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
>>  	if (irq < 0)
>>  		return -ENODEV;
>>  
>> -	for (i = 0; i < NUM_EVENTS; i++) {
>> +	for (i = 0; i < port->num_events; i++) {
>>  		event_irq = irq_create_mapping(port->event_domain, i);
>>  		if (!event_irq) {
>>  			dev_err(dev, "failed to map hwirq %d\n", i);
>>  			return -ENXIO;
>>  		}
>>  
>> -		ret = devm_request_irq(dev, event_irq, mc_event_handler,
>> -				       0, event_cause[i].sym, port);
>> +		if (evt->request_evt_irq)
>> +			ret = evt->request_evt_irq(port, event_irq, i);
>> +		else
>> +			ret = devm_request_irq(dev, event_irq, plda_event_handler,
>> +					       0, NULL, port);
> 
> Is there a particular reason this if/else addition ended up in this
> patch, but the if/else addition in plda_handle_event() ended up in the
> next one?
> 
> Otherwise, this looks fine to me.
I forget to modify mc_handle_event()， So leave it to next patch.  
But I will ended up them in this patches. This patch is to modify, next patch is to move.
diff mbox series

Patch

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index b42f1aac3ec3..140e7ca1a5cb 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -559,7 +559,7 @@  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 plda_evt *evt)
 {
 	struct device *dev = port->dev;
 	struct device_node *node = dev->of_node;
@@ -572,8 +572,8 @@  static int mc_pcie_init_irq_domains(struct plda_pcie_rp *port)
 		return -EINVAL;
 	}
 
-	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
-						   &event_domain_ops, port);
+	port->event_domain = irq_domain_add_linear(pcie_intc_node, port->num_events,
+						   evt->domain_ops, port);
 	if (!port->event_domain) {
 		dev_err(dev, "failed to get event domain\n");
 		of_node_put(pcie_intc_node);
@@ -658,14 +658,15 @@  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 plda_evt *evt)
 {
 	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, evt);
 	if (ret) {
 		dev_err(dev, "failed creating IRQ domains\n");
 		return ret;
@@ -675,15 +676,18 @@  static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 	if (irq < 0)
 		return -ENODEV;
 
-	for (i = 0; i < NUM_EVENTS; i++) {
+	for (i = 0; i < port->num_events; i++) {
 		event_irq = irq_create_mapping(port->event_domain, i);
 		if (!event_irq) {
 			dev_err(dev, "failed to map hwirq %d\n", i);
 			return -ENXIO;
 		}
 
-		ret = devm_request_irq(dev, event_irq, mc_event_handler,
-				       0, event_cause[i].sym, port);
+		if (evt->request_evt_irq)
+			ret = evt->request_evt_irq(port, event_irq, i);
+		else
+			ret = devm_request_irq(dev, event_irq, plda_event_handler,
+					       0, NULL, port);
 		if (ret) {
 			dev_err(dev, "failed to request IRQ %d\n", event_irq);
 			return ret;
@@ -691,7 +695,7 @@  static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 	}
 
 	intx_irq = irq_create_mapping(port->event_domain,
-				      EVENT_LOCAL_PM_MSI_INT_INTX);
+				      evt->intx_evt);
 	if (!intx_irq) {
 		dev_err(dev, "failed to map INTx interrupt\n");
 		return -ENXIO;
@@ -701,7 +705,7 @@  static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 	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);
+				     evt->msi_evt);
 	if (!msi_irq)
 		return -ENXIO;
 
@@ -714,6 +718,13 @@  static int mc_init_interrupts(struct platform_device *pdev, struct plda_pcie_rp
 	return 0;
 }
 
+static int mc_request_evt_irq(struct plda_pcie_rp *plda, int event_irq,
+			      int evt)
+{
+	return devm_request_irq(plda->dev, event_irq, mc_event_handler,
+				0, event_cause[evt].sym, plda);
+}
+
 static int mc_platform_init(struct pci_config_window *cfg)
 {
 	struct device *dev = cfg->parent;
@@ -721,6 +732,9 @@  static int mc_platform_init(struct pci_config_window *cfg)
 	void __iomem *bridge_base_addr =
 		port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	struct pci_host_bridge *bridge = platform_get_drvdata(pdev);
+	struct plda_evt evt = {&event_domain_ops, mc_request_evt_irq,
+			       EVENT_LOCAL_PM_MSI_INT_INTX,
+			       EVENT_LOCAL_PM_MSI_INT_MSI};
 	int ret;
 
 	/* Configure address translation table 0 for PCIe config space */
@@ -737,7 +751,7 @@  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, &evt);
 	if (ret)
 		return ret;
 
@@ -758,6 +772,7 @@  static int mc_host_probe(struct platform_device *pdev)
 
 	plda = &port->plda;
 	plda->dev = dev;
+	plda->num_events = NUM_EVENTS;
 
 	port->axi_base_addr = devm_platform_ioremap_resource(pdev, 1);
 	if (IS_ERR(port->axi_base_addr))
diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h
index 56483ebb678d..7571b0bbf37f 100644
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -126,6 +126,13 @@  struct plda_pcie_rp {
 	int num_events;
 };
 
+struct plda_evt {
+	const struct irq_domain_ops *domain_ops;
+	int (*request_evt_irq)(struct plda_pcie_rp *pcie, int evt_irq, int event);
+	int intx_evt;
+	int msi_evt;
+};
+
 void plda_handle_msi(struct irq_desc *desc);
 int plda_allocate_msi_domains(struct plda_pcie_rp *port);
 irqreturn_t plda_event_handler(int irq, void *dev_id);