linux-kernel - Re: [PATCH 09/10] PCI: dwc: Remove Keystone specific dw_pcie_host

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Message-ID: <c6566152-6170-7bb2-eec7-bc3f04a6f788@synopsys.com>
Date:   Wed, 2 Jan 2019 10:12:50 +0000
From:   Gustavo Pimentel <gustavo.pimentel@...opsys.com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Murali Karicheri <m-karicheri2@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        Marc Zyngier <marc.zyngier@....com>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Jingoo Han <jingoohan1@...il.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 09/10] PCI: dwc: Remove Keystone specific dw_pcie_host_ops

Hi,

On 19/12/2018 12:42, Kishon Vijay Abraham I wrote:
> Now that Keystone started using it's own msi_irq_chip, remove
> Keystone specific callback function defined in dw_pcie_host_ops.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> ---
>  .../pci/controller/dwc/pcie-designware-host.c | 45 ++++++-------------
>  drivers/pci/controller/dwc/pcie-designware.h  |  5 ---
>  2 files changed, 14 insertions(+), 36 deletions(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
> index db21bd11f153..dbc94f3be3d5 100644
> --- a/drivers/pci/controller/dwc/pcie-designware-host.c
> +++ b/drivers/pci/controller/dwc/pcie-designware-host.c
> @@ -126,18 +126,12 @@ static void dw_pci_setup_msi_msg(struct irq_data *data, struct msi_msg *msg)
>  	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
>  	u64 msi_target;
>  
> -	if (pp->ops->get_msi_addr)
> -		msi_target = pp->ops->get_msi_addr(pp);
> -	else
> -		msi_target = (u64)pp->msi_data;
> +	msi_target = (u64)pp->msi_data;
>  
>  	msg->address_lo = lower_32_bits(msi_target);
>  	msg->address_hi = upper_32_bits(msi_target);
>  
> -	if (pp->ops->get_msi_data)
> -		msg->data = pp->ops->get_msi_data(pp, data->hwirq);
> -	else
> -		msg->data = data->hwirq;
> +	msg->data = data->hwirq;
>  
>  	dev_dbg(pci->dev, "msi#%d address_hi %#x address_lo %#x\n",
>  		(int)data->hwirq, msg->address_hi, msg->address_lo);
> @@ -157,17 +151,13 @@ static void dw_pci_bottom_mask(struct irq_data *data)
>  
>  	raw_spin_lock_irqsave(&pp->lock, flags);
>  
> -	if (pp->ops->msi_clear_irq) {
> -		pp->ops->msi_clear_irq(pp, data->hwirq);
> -	} else {
> -		ctrl = data->hwirq / MAX_MSI_IRQS_PER_CTRL;
> -		res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
> -		bit = data->hwirq % MAX_MSI_IRQS_PER_CTRL;
> +	ctrl = data->hwirq / MAX_MSI_IRQS_PER_CTRL;
> +	res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
> +	bit = data->hwirq % MAX_MSI_IRQS_PER_CTRL;
>  
> -		pp->irq_status[ctrl] &= ~(1 << bit);
> -		dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
> -				    ~pp->irq_status[ctrl]);
> -	}
> +	pp->irq_status[ctrl] &= ~(1 << bit);
> +	dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
> +			    ~pp->irq_status[ctrl]);
>  
>  	raw_spin_unlock_irqrestore(&pp->lock, flags);
>  }
> @@ -180,17 +170,13 @@ static void dw_pci_bottom_unmask(struct irq_data *data)
>  
>  	raw_spin_lock_irqsave(&pp->lock, flags);
>  
> -	if (pp->ops->msi_set_irq) {
> -		pp->ops->msi_set_irq(pp, data->hwirq);
> -	} else {
> -		ctrl = data->hwirq / MAX_MSI_IRQS_PER_CTRL;
> -		res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
> -		bit = data->hwirq % MAX_MSI_IRQS_PER_CTRL;
> +	ctrl = data->hwirq / MAX_MSI_IRQS_PER_CTRL;
> +	res = ctrl * MSI_REG_CTRL_BLOCK_SIZE;
> +	bit = data->hwirq % MAX_MSI_IRQS_PER_CTRL;
>  
> -		pp->irq_status[ctrl] |= 1 << bit;
> -		dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
> -				    ~pp->irq_status[ctrl]);
> -	}
> +	pp->irq_status[ctrl] |= 1 << bit;
> +	dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_MASK + res, 4,
> +			    ~pp->irq_status[ctrl]);
>  
>  	raw_spin_unlock_irqrestore(&pp->lock, flags);
>  }
> @@ -209,9 +195,6 @@ static void dw_pci_bottom_ack(struct irq_data *d)
>  
>  	dw_pcie_wr_own_conf(pp, PCIE_MSI_INTR0_STATUS + res, 4, 1 << bit);
>  
> -	if (pp->ops->msi_irq_ack)
> -		pp->ops->msi_irq_ack(d->hwirq, pp);
> -
>  	raw_spin_unlock_irqrestore(&pp->lock, flags);
>  }
>  
> diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
> index 0873ee4084aa..53cb6ab405b5 100644
> --- a/drivers/pci/controller/dwc/pcie-designware.h
> +++ b/drivers/pci/controller/dwc/pcie-designware.h
> @@ -134,14 +134,9 @@ struct dw_pcie_host_ops {
>  	int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
>  			     unsigned int devfn, int where, int size, u32 val);
>  	int (*host_init)(struct pcie_port *pp);
> -	void (*msi_set_irq)(struct pcie_port *pp, int irq);
> -	void (*msi_clear_irq)(struct pcie_port *pp, int irq);
> -	phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
> -	u32 (*get_msi_data)(struct pcie_port *pp, int pos);
>  	void (*scan_bus)(struct pcie_port *pp);
>  	void (*set_num_vectors)(struct pcie_port *pp);
>  	int (*msi_host_init)(struct pcie_port *pp);
> -	void (*msi_irq_ack)(int irq, struct pcie_port *pp);
>  };
>  
>  struct pcie_port {
> 

Acked-by: Gustavo Pimentel <gustavo.pimentel@...opsys.com>

Regards,
Gustavo