| Message ID | 20230418122403.3178462-16-yoshihiro.shimoda.uh@renesas.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Geert Uytterhoeven |
| Headers | show |
| Series | PCI: rcar-gen4: Add R-Car Gen4 PCIe support | expand |
On Tue, Apr 18, 2023 at 09:23:56PM +0900, Yoshihiro Shimoda wrote: > One of controllers requires vender-specific initialization before Again, specify the exact controller. > .ep_init(). To use dw->dbi and dw->bum-lanes in the initialization num-lanes - Mani > code, introduce .ep_pre_init() into struct dw_pcie_ep_ops. > Also introduce .ep_deinit() to disable the controller by using > vender-specific de-initialization. > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> > --- > drivers/pci/controller/dwc/pcie-designware-ep.c | 6 ++++++ > drivers/pci/controller/dwc/pcie-designware.h | 2 ++ > 2 files changed, 8 insertions(+) > > diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c > index 2458ca2bc0e4..a011db7e3064 100644 > --- a/drivers/pci/controller/dwc/pcie-designware-ep.c > +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c > @@ -670,6 +670,9 @@ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) > struct dw_pcie *pci = to_dw_pcie_from_ep(ep); > struct pci_epc *epc = ep->epc; > > + if (ep->ops->ep_deinit) > + ep->ops->ep_deinit(ep); > + > dw_pcie_edma_remove(pci); > > if (ep->intx_mem) > @@ -783,6 +786,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) > ep->phys_base = res->start; > ep->addr_size = resource_size(res); > > + if (ep->ops->ep_pre_init) > + ep->ops->ep_pre_init(ep); > + > dw_pcie_version_detect(pci); > > dw_pcie_iatu_detect(pci); > diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h > index c4bdfed7b2e2..ae8ac15e53dc 100644 > --- a/drivers/pci/controller/dwc/pcie-designware.h > +++ b/drivers/pci/controller/dwc/pcie-designware.h > @@ -336,7 +336,9 @@ struct dw_pcie_rp { > }; > > struct dw_pcie_ep_ops { > + void (*ep_pre_init)(struct dw_pcie_ep *ep); > void (*ep_init)(struct dw_pcie_ep *ep); > + void (*ep_deinit)(struct dw_pcie_ep *ep); > int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, > enum pci_epc_irq_type type, u16 interrupt_num); > const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); > -- > 2.25.1 >
Hi Manivannan, > From: Manivannan Sadhasivam, Sent: Saturday, April 22, 2023 11:01 PM > > On Tue, Apr 18, 2023 at 09:23:56PM +0900, Yoshihiro Shimoda wrote: > > One of controllers requires vender-specific initialization before > > Again, specify the exact controller. I got it. I'll revise the description. > > .ep_init(). To use dw->dbi and dw->bum-lanes in the initialization > > num-lanes Oops. I'll fix it. Best regards, Yoshihiro Shimoda > - Mani > > > code, introduce .ep_pre_init() into struct dw_pcie_ep_ops. > > Also introduce .ep_deinit() to disable the controller by using > > vender-specific de-initialization. > > > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> > > --- > > drivers/pci/controller/dwc/pcie-designware-ep.c | 6 ++++++ > > drivers/pci/controller/dwc/pcie-designware.h | 2 ++ > > 2 files changed, 8 insertions(+) > > > > diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c > > index 2458ca2bc0e4..a011db7e3064 100644 > > --- a/drivers/pci/controller/dwc/pcie-designware-ep.c > > +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c > > @@ -670,6 +670,9 @@ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) > > struct dw_pcie *pci = to_dw_pcie_from_ep(ep); > > struct pci_epc *epc = ep->epc; > > > > + if (ep->ops->ep_deinit) > > + ep->ops->ep_deinit(ep); > > + > > dw_pcie_edma_remove(pci); > > > > if (ep->intx_mem) > > @@ -783,6 +786,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) > > ep->phys_base = res->start; > > ep->addr_size = resource_size(res); > > > > + if (ep->ops->ep_pre_init) > > + ep->ops->ep_pre_init(ep); > > + > > dw_pcie_version_detect(pci); > > > > dw_pcie_iatu_detect(pci); > > diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h > > index c4bdfed7b2e2..ae8ac15e53dc 100644 > > --- a/drivers/pci/controller/dwc/pcie-designware.h > > +++ b/drivers/pci/controller/dwc/pcie-designware.h > > @@ -336,7 +336,9 @@ struct dw_pcie_rp { > > }; > > > > struct dw_pcie_ep_ops { > > + void (*ep_pre_init)(struct dw_pcie_ep *ep); > > void (*ep_init)(struct dw_pcie_ep *ep); > > + void (*ep_deinit)(struct dw_pcie_ep *ep); > > int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, > > enum pci_epc_irq_type type, u16 interrupt_num); > > const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); > > -- > > 2.25.1 > > > > -- > மணிவண்ணன் சதாசிவம்
diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c index 2458ca2bc0e4..a011db7e3064 100644 --- a/drivers/pci/controller/dwc/pcie-designware-ep.c +++ b/drivers/pci/controller/dwc/pcie-designware-ep.c @@ -670,6 +670,9 @@ void dw_pcie_ep_exit(struct dw_pcie_ep *ep) struct dw_pcie *pci = to_dw_pcie_from_ep(ep); struct pci_epc *epc = ep->epc; + if (ep->ops->ep_deinit) + ep->ops->ep_deinit(ep); + dw_pcie_edma_remove(pci); if (ep->intx_mem) @@ -783,6 +786,9 @@ int dw_pcie_ep_init(struct dw_pcie_ep *ep) ep->phys_base = res->start; ep->addr_size = resource_size(res); + if (ep->ops->ep_pre_init) + ep->ops->ep_pre_init(ep); + dw_pcie_version_detect(pci); dw_pcie_iatu_detect(pci); diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h index c4bdfed7b2e2..ae8ac15e53dc 100644 --- a/drivers/pci/controller/dwc/pcie-designware.h +++ b/drivers/pci/controller/dwc/pcie-designware.h @@ -336,7 +336,9 @@ struct dw_pcie_rp { }; struct dw_pcie_ep_ops { + void (*ep_pre_init)(struct dw_pcie_ep *ep); void (*ep_init)(struct dw_pcie_ep *ep); + void (*ep_deinit)(struct dw_pcie_ep *ep); int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, enum pci_epc_irq_type type, u16 interrupt_num); const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep);
One of controllers requires vender-specific initialization before .ep_init(). To use dw->dbi and dw->bum-lanes in the initialization code, introduce .ep_pre_init() into struct dw_pcie_ep_ops. Also introduce .ep_deinit() to disable the controller by using vender-specific de-initialization. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> --- drivers/pci/controller/dwc/pcie-designware-ep.c | 6 ++++++ drivers/pci/controller/dwc/pcie-designware.h | 2 ++ 2 files changed, 8 insertions(+)