| Message ID | 20231011110514.107528-16-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| State | Superseded |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 |
On Wed, Oct 11, 2023 at 07:05:07PM +0800, Minda Chen wrote: > For different interrupts to event num mapping function, > add get_events() function pointer. > For extenting event ops in the fucture, Add struct > plda_event_ops data structure. I still think these commit messages are a bit weak and should point out the reasons why these are needed, rather than handwaving about future users. Otherwise, Acked-by: Conor Dooley <conor.dooley@microchip.com> Thanks, Conor. > > plda_handle_events() will call the get_events() callback > function pointer directly. For the robustness of codes, > add checking in plda_init_interrupts(). > > Signed-off-by: Minda Chen <minda.chen@starfivetech.com> > --- > drivers/pci/controller/plda/pcie-microchip-host.c | 14 +++++++++++++- > drivers/pci/controller/plda/pcie-plda.h | 8 ++++++++ > 2 files changed, 21 insertions(+), 1 deletion(-) > > diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c > index e99498b5b563..fca1520d56c9 100644 > --- a/drivers/pci/controller/plda/pcie-microchip-host.c > +++ b/drivers/pci/controller/plda/pcie-microchip-host.c > @@ -647,7 +647,7 @@ static void plda_handle_event(struct irq_desc *desc) > > chained_irq_enter(chip, desc); > > - events = mc_get_events(port); > + events = port->event_ops->get_events(port); > > for_each_set_bit(bit, &events, port->num_events) > generic_handle_domain_irq(port->event_domain, bit); > @@ -806,7 +806,12 @@ static int mc_request_event_irq(struct plda_pcie_rp *plda, int event_irq, > 0, event_cause[event].sym, plda); > } > > +static const struct plda_event_ops mc_event_ops = { > + .get_events = mc_get_events, > +}; > + > static const struct plda_event mc_event = { > + .event_ops = &mc_event_ops, > .request_event_irq = mc_request_event_irq, > .intx_event = EVENT_LOCAL_PM_MSI_INT_INTX, > .msi_event = EVENT_LOCAL_PM_MSI_INT_MSI, > @@ -920,6 +925,11 @@ static int plda_init_interrupts(struct platform_device *pdev, > int i, intx_irq, msi_irq, event_irq; > int ret; > > + if (!event->event_ops || !event->event_ops->get_events) { > + dev_err(dev, "no get events ops\n"); > + return -EINVAL; > + } > + > ret = plda_pcie_init_irq_domains(port); > if (ret) { > dev_err(dev, "failed creating IRQ domains\n"); > @@ -930,6 +940,8 @@ static int plda_init_interrupts(struct platform_device *pdev, > if (irq < 0) > return -ENODEV; > > + port->event_ops = event->event_ops; > + > for (i = 0; i < port->num_events; i++) { > event_irq = irq_create_mapping(port->event_domain, i); > if (!event_irq) { > diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h > index 5ad1b81c0086..6571a4befac9 100644 > --- a/drivers/pci/controller/plda/pcie-plda.h > +++ b/drivers/pci/controller/plda/pcie-plda.h > @@ -102,6 +102,12 @@ > #define EVENT_PM_MSI_INT_SYS_ERR 12 > #define NUM_PLDA_EVENTS 13 > > +struct plda_pcie_rp; > + > +struct plda_event_ops { > + u32 (*get_events)(struct plda_pcie_rp *pcie); > +}; > + > struct plda_msi { > struct mutex lock; /* Protect used bitmap */ > struct irq_domain *msi_domain; > @@ -117,11 +123,13 @@ struct plda_pcie_rp { > struct irq_domain *event_domain; > raw_spinlock_t lock; > struct plda_msi msi; > + const struct plda_event_ops *event_ops; > void __iomem *bridge_addr; > int num_events; > }; > > struct plda_event { > + const struct plda_event_ops *event_ops; > int (*request_event_irq)(struct plda_pcie_rp *pcie, > int event_irq, int event); > int intx_event; > -- > 2.17.1 >
diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c index e99498b5b563..fca1520d56c9 100644 --- a/drivers/pci/controller/plda/pcie-microchip-host.c +++ b/drivers/pci/controller/plda/pcie-microchip-host.c @@ -647,7 +647,7 @@ static void plda_handle_event(struct irq_desc *desc) chained_irq_enter(chip, desc); - events = mc_get_events(port); + events = port->event_ops->get_events(port); for_each_set_bit(bit, &events, port->num_events) generic_handle_domain_irq(port->event_domain, bit); @@ -806,7 +806,12 @@ static int mc_request_event_irq(struct plda_pcie_rp *plda, int event_irq, 0, event_cause[event].sym, plda); } +static const struct plda_event_ops mc_event_ops = { + .get_events = mc_get_events, +}; + static const struct plda_event mc_event = { + .event_ops = &mc_event_ops, .request_event_irq = mc_request_event_irq, .intx_event = EVENT_LOCAL_PM_MSI_INT_INTX, .msi_event = EVENT_LOCAL_PM_MSI_INT_MSI, @@ -920,6 +925,11 @@ static int plda_init_interrupts(struct platform_device *pdev, int i, intx_irq, msi_irq, event_irq; int ret; + if (!event->event_ops || !event->event_ops->get_events) { + dev_err(dev, "no get events ops\n"); + return -EINVAL; + } + ret = plda_pcie_init_irq_domains(port); if (ret) { dev_err(dev, "failed creating IRQ domains\n"); @@ -930,6 +940,8 @@ static int plda_init_interrupts(struct platform_device *pdev, if (irq < 0) return -ENODEV; + port->event_ops = event->event_ops; + for (i = 0; i < port->num_events; i++) { event_irq = irq_create_mapping(port->event_domain, i); if (!event_irq) { diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h index 5ad1b81c0086..6571a4befac9 100644 --- a/drivers/pci/controller/plda/pcie-plda.h +++ b/drivers/pci/controller/plda/pcie-plda.h @@ -102,6 +102,12 @@ #define EVENT_PM_MSI_INT_SYS_ERR 12 #define NUM_PLDA_EVENTS 13 +struct plda_pcie_rp; + +struct plda_event_ops { + u32 (*get_events)(struct plda_pcie_rp *pcie); +}; + struct plda_msi { struct mutex lock; /* Protect used bitmap */ struct irq_domain *msi_domain; @@ -117,11 +123,13 @@ struct plda_pcie_rp { struct irq_domain *event_domain; raw_spinlock_t lock; struct plda_msi msi; + const struct plda_event_ops *event_ops; void __iomem *bridge_addr; int num_events; }; struct plda_event { + const struct plda_event_ops *event_ops; int (*request_event_irq)(struct plda_pcie_rp *pcie, int event_irq, int event); int intx_event;
For different interrupts to event num mapping function, add get_events() function pointer. For extenting event ops in the fucture, Add struct plda_event_ops data structure. plda_handle_events() will call the get_events() callback function pointer directly. For the robustness of codes, add checking in plda_init_interrupts(). Signed-off-by: Minda Chen <minda.chen@starfivetech.com> --- drivers/pci/controller/plda/pcie-microchip-host.c | 14 +++++++++++++- drivers/pci/controller/plda/pcie-plda.h | 8 ++++++++ 2 files changed, 21 insertions(+), 1 deletion(-)