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* [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host
@ 2019-04-23  4:49 Vidya Sagar
  2019-04-23  4:49 ` [PATCH V3 2/2] PCI: dwc: Export APIs to support .remove() implementation Vidya Sagar
  2019-05-02  7:06 ` [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
  0 siblings, 2 replies; 3+ messages in thread
From: Vidya Sagar @ 2019-04-23  4:49 UTC (permalink / raw)
  To: jingoohan1, gustavo.pimentel, lorenzo.pieralisi, bhelgaas,
	Jisheng.Zhang, thierry.reding
  Cc: linux-pci, linux-kernel, kthota, mmaddireddy, sagar.tv, vidyas

Add an API to group all the tasks to be done to de-initialize host which
can then be called by any DesignWare core based driver implementations
while adding .remove() support in their respective drivers.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
v3:
* Rebased on top of linux-next top of the tree branch

v2:
* s/Designware/DesignWare

 drivers/pci/controller/dwc/pcie-designware-host.c | 7 +++++++
 drivers/pci/controller/dwc/pcie-designware.h      | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 77db32529319..f87c9542eb09 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -496,6 +496,13 @@ int dw_pcie_host_init(struct pcie_port *pp)
 	return ret;
 }
 
+void dw_pcie_host_deinit(struct pcie_port *pp)
+{
+	pci_stop_root_bus(pp->root_bus);
+	pci_remove_root_bus(pp->root_bus);
+	dw_pcie_free_msi(pp);
+}
+
 static int dw_pcie_access_other_conf(struct pcie_port *pp, struct pci_bus *bus,
 				     u32 devfn, int where, int size, u32 *val,
 				     bool write)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index deab426affd3..4f48ec78c7b9 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -348,6 +348,7 @@ void dw_pcie_msi_init(struct pcie_port *pp);
 void dw_pcie_free_msi(struct pcie_port *pp);
 void dw_pcie_setup_rc(struct pcie_port *pp);
 int dw_pcie_host_init(struct pcie_port *pp);
+void dw_pcie_host_deinit(struct pcie_port *pp);
 int dw_pcie_allocate_domains(struct pcie_port *pp);
 #else
 static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
@@ -372,6 +373,10 @@ static inline int dw_pcie_host_init(struct pcie_port *pp)
 	return 0;
 }
 
+static inline void dw_pcie_host_deinit(struct pcie_port *pp)
+{
+}
+
 static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
 {
 	return 0;
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* [PATCH V3 2/2] PCI: dwc: Export APIs to support .remove() implementation
  2019-04-23  4:49 [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
@ 2019-04-23  4:49 ` Vidya Sagar
  2019-05-02  7:06 ` [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
  1 sibling, 0 replies; 3+ messages in thread
From: Vidya Sagar @ 2019-04-23  4:49 UTC (permalink / raw)
  To: jingoohan1, gustavo.pimentel, lorenzo.pieralisi, bhelgaas,
	Jisheng.Zhang, thierry.reding
  Cc: linux-pci, linux-kernel, kthota, mmaddireddy, sagar.tv, vidyas

Export all configuration space access APIs and also other APIs to
support host controller drivers of DesignWare core based implementations
while adding support for .remove() hook to build their respective drivers
as modules

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
---
v3:
* Rebased on top of linux-next top of the tree branch

v2:
* s/Designware/DesignWare

 .../pci/controller/dwc/pcie-designware-host.c |  4 ++
 drivers/pci/controller/dwc/pcie-designware.c  | 38 +++++++++++++++++++
 drivers/pci/controller/dwc/pcie-designware.h  | 35 +++--------------
 3 files changed, 48 insertions(+), 29 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index f87c9542eb09..36fd3f5b48f6 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -311,6 +311,7 @@ void dw_pcie_msi_init(struct pcie_port *pp)
 	dw_pcie_wr_own_conf(pp, PCIE_MSI_ADDR_HI, 4,
 			    upper_32_bits(msi_target));
 }
+EXPORT_SYMBOL_GPL(dw_pcie_msi_init);
 
 int dw_pcie_host_init(struct pcie_port *pp)
 {
@@ -495,6 +496,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 		dw_pcie_free_msi(pp);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_host_init);
 
 void dw_pcie_host_deinit(struct pcie_port *pp)
 {
@@ -502,6 +504,7 @@ void dw_pcie_host_deinit(struct pcie_port *pp)
 	pci_remove_root_bus(pp->root_bus);
 	dw_pcie_free_msi(pp);
 }
+EXPORT_SYMBOL_GPL(dw_pcie_host_deinit);
 
 static int dw_pcie_access_other_conf(struct pcie_port *pp, struct pci_bus *bus,
 				     u32 devfn, int where, int size, u32 *val,
@@ -694,3 +697,4 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
 	val |= PORT_LOGIC_SPEED_CHANGE;
 	dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val);
 }
+EXPORT_SYMBOL_GPL(dw_pcie_setup_rc);
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index d7cc1a0c1de6..8e0081ccf83b 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -40,6 +40,7 @@ int dw_pcie_read(void __iomem *addr, int size, u32 *val)
 
 	return PCIBIOS_SUCCESSFUL;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_read);
 
 int dw_pcie_write(void __iomem *addr, int size, u32 val)
 {
@@ -57,6 +58,7 @@ int dw_pcie_write(void __iomem *addr, int size, u32 val)
 
 	return PCIBIOS_SUCCESSFUL;
 }
+EXPORT_SYMBOL_GPL(dw_pcie_write);
 
 u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		       size_t size)
@@ -120,6 +122,42 @@ void __dw_pcie_write_dbi2(struct dw_pcie *pci, void __iomem *base, u32 reg,
 		dev_err(pci->dev, "write DBI address failed\n");
 }
 
+void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
+{
+	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_writel_dbi);
+
+u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
+{
+	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_readl_dbi);
+
+void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
+{
+	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_writew_dbi);
+
+u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
+{
+	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_readw_dbi);
+
+void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
+{
+	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_writeb_dbi);
+
+u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
+{
+	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1);
+}
+EXPORT_SYMBOL_GPL(dw_pcie_readb_dbi);
+
 static u32 dw_pcie_readl_ob_unroll(struct dw_pcie *pci, u32 index, u32 reg)
 {
 	u32 offset = PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(index);
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 4f48ec78c7b9..9ee98ced1ef6 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -270,35 +270,12 @@ void dw_pcie_disable_atu(struct dw_pcie *pci, int index,
 			 enum dw_pcie_region_type type);
 void dw_pcie_setup(struct dw_pcie *pci);
 
-static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
-{
-	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val);
-}
-
-static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
-{
-	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4);
-}
-
-static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
-{
-	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val);
-}
-
-static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
-{
-	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2);
-}
-
-static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
-{
-	__dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val);
-}
-
-static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
-{
-	return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1);
-}
+void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val);
+u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg);
+void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val);
+u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg);
+void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val);
+u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg);
 
 static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
 {
-- 
2.17.1


^ permalink raw reply related	[flat|nested] 3+ messages in thread
* Re: [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host
  2019-04-23  4:49 [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
  2019-04-23  4:49 ` [PATCH V3 2/2] PCI: dwc: Export APIs to support .remove() implementation Vidya Sagar
@ 2019-05-02  7:06 ` Vidya Sagar
  1 sibling, 0 replies; 3+ messages in thread
From: Vidya Sagar @ 2019-05-02  7:06 UTC (permalink / raw)
  To: jingoohan1, gustavo.pimentel, lorenzo.pieralisi, bhelgaas,
	Jisheng.Zhang, thierry.reding
  Cc: linux-pci, linux-kernel, kthota, mmaddireddy, sagar.tv

On 4/23/2019 10:19 AM, Vidya Sagar wrote:
> Add an API to group all the tasks to be done to de-initialize host which
> can then be called by any DesignWare core based driver implementations
> while adding .remove() support in their respective drivers.
> 
> Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
> Acked-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
> ---
> v3:
> * Rebased on top of linux-next top of the tree branch
> 
> v2:
> * s/Designware/DesignWare
> 
>   drivers/pci/controller/dwc/pcie-designware-host.c | 7 +++++++
>   drivers/pci/controller/dwc/pcie-designware.h      | 5 +++++
>   2 files changed, 12 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index 77db32529319..f87c9542eb09 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -496,6 +496,13 @@ int dw_pcie_host_init(struct pcie_port *pp)
>   	return ret;
>   }
>   
> +void dw_pcie_host_deinit(struct pcie_port *pp)
> +{
> +	pci_stop_root_bus(pp->root_bus);
> +	pci_remove_root_bus(pp->root_bus);
> +	dw_pcie_free_msi(pp);
> +}
> +
>   static int dw_pcie_access_other_conf(struct pcie_port *pp, struct pci_bus *bus,
>   				     u32 devfn, int where, int size, u32 *val,
>   				     bool write)
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index deab426affd3..4f48ec78c7b9 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -348,6 +348,7 @@ void dw_pcie_msi_init(struct pcie_port *pp);
>   void dw_pcie_free_msi(struct pcie_port *pp);
>   void dw_pcie_setup_rc(struct pcie_port *pp);
>   int dw_pcie_host_init(struct pcie_port *pp);
> +void dw_pcie_host_deinit(struct pcie_port *pp);
>   int dw_pcie_allocate_domains(struct pcie_port *pp);
>   #else
>   static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
> @@ -372,6 +373,10 @@ static inline int dw_pcie_host_init(struct pcie_port *pp)
>   	return 0;
>   }
>   
> +static inline void dw_pcie_host_deinit(struct pcie_port *pp)
> +{
> +}
> +
>   static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
>   {
>   	return 0;
> 

Hi Lorenzo,
Can you please review this patch series?

Thanks,
Vidya Sagar

^ permalink raw reply	[flat|nested] 3+ messages in thread
end of thread, other threads:[~2019-05-02  7:06 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2019-04-23  4:49 [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar
2019-04-23  4:49 ` [PATCH V3 2/2] PCI: dwc: Export APIs to support .remove() implementation Vidya Sagar
2019-05-02  7:06 ` [PATCH V3 1/2] PCI: dwc: Add API support to de-initialize host Vidya Sagar

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