Re: [PATCH 1/3] USB: Add new PCI USB3 HCD device ID and new flag for pci hcd driver

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On 01/10/2012 03:34 PM, Alex Shi wrote:
> Adding Intel USB3 xhci host controller ID in pci_ids.h, and a MSI_FST
> flags in pci hcd driver. That HCD may just works under MSI, so need to
> skip line irq checking in pci hcd core probe. That is a preparation for
> next fixing patch.
> 
> This patch also fix a little comments error in code.
> 
> Signed-off-by: Alex Shi <alex.shi@xxxxxxxxx>
> ---
>  drivers/usb/host/xhci.h |    2 +-
>  include/linux/pci_ids.h |    2 ++
>  include/linux/usb/hcd.h |    4 ++--
>  3 files changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
> index 3c8fbd2..ecd2ad5 100644
> --- a/drivers/usb/host/xhci.h
> +++ b/drivers/usb/host/xhci.h
> @@ -1356,7 +1356,7 @@ static inline unsigned int hcd_index(struct usb_hcd *hcd)
>  		return 1;
>  }
>  
> -/* There is one ehci_hci structure per controller */
> +/* There is one xhci_hcd structure per controller */

I believe Sarah already submitted patch to fix this.

>  struct xhci_hcd {
>  	struct usb_hcd *main_hcd;
>  	struct usb_hcd *shared_hcd;
> diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
> index 2aaee0c..0a7c1f5 100644
> --- a/include/linux/pci_ids.h
> +++ b/include/linux/pci_ids.h
> @@ -641,6 +641,7 @@
>  #define PCI_DEVICE_ID_NEC_STARALPHA2	0x002c /* STAR ALPHA2 */
>  #define PCI_DEVICE_ID_NEC_CBUS_2	0x002d /* PCI-Cbus Bridge */
>  #define PCI_DEVICE_ID_NEC_USB		0x0035 /* PCI-USB Host */
> +#define PCI_DEVICE_ID_NEC_USB3		0x0194 /* PCI-USB3 Host */

Why do you add this NEC device id define? Your next 2 patches do not use
this.

Thanks,
Andiry

>  #define PCI_DEVICE_ID_NEC_CBUS_3	0x003b
>  #define PCI_DEVICE_ID_NEC_NAPCCARD	0x003e
>  #define PCI_DEVICE_ID_NEC_PCX2		0x0046 /* PowerVR */
> @@ -2779,6 +2780,7 @@
>  #define PCI_DEVICE_ID_INTEL_IXP4XX	0x8500
>  #define PCI_DEVICE_ID_INTEL_IXP2800	0x9004
>  #define PCI_DEVICE_ID_INTEL_S21152BB	0xb152
> +#define PCI_DEVICE_ID_INTEL_USB_XHCI	0x1e31
>  
>  #define PCI_VENDOR_ID_SCALEMP		0x8686
>  #define PCI_DEVICE_ID_SCALEMP_VSMP_CTL	0x1010
> diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h
> index 03354d5..4f67a41 100644
> --- a/include/linux/usb/hcd.h
> +++ b/include/linux/usb/hcd.h
> @@ -199,9 +199,8 @@ struct hcd_timeout {	/* timeouts we allocate */
>  
>  /*-------------------------------------------------------------------------*/
>  
> -
>  struct hc_driver {
> -	const char	*description;	/* "ehci-hcd" etc */
> +	const char	*description;	/* "ehci_hcd", "xhci_hcd" etc */
>  	const char	*product_desc;	/* product/vendor string */
>  	size_t		hcd_priv_size;	/* size of private data */
>  
> @@ -212,6 +211,7 @@ struct hc_driver {
>  #define	HCD_MEMORY	0x0001		/* HC regs use memory (else I/O) */
>  #define	HCD_LOCAL_MEM	0x0002		/* HC needs local memory */
>  #define	HCD_SHARED	0x0004		/* Two (or more) usb_hcds share HW */
> +#define	HCD_MSI_FST	0x0008		/* Try to get MSI first, PCI only */
>  #define	HCD_USB11	0x0010		/* USB 1.1 */
>  #define	HCD_USB2	0x0020		/* USB 2.0 */
>  #define	HCD_USB3	0x0040		/* USB 3.0 */


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