diff options
Diffstat (limited to 'drivers/usb/ohci.h')
| -rw-r--r-- | drivers/usb/ohci.h | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/usb/ohci.h b/drivers/usb/ohci.h index 2fdc3583d..88b08750f 100644 --- a/drivers/usb/ohci.h +++ b/drivers/usb/ohci.h @@ -38,10 +38,12 @@ struct ohci_td { void *data; /* virt. address of the the buffer */ usb_device_irq completed; /* Completion handler routine */ int hcd_flags; /* Flags for the HCD: */ - /* bit0 = boolean: Is this TD allocated? */ - /* bit1 = boolean: Is this a dummy (end of list) TD? */ + /* bit0: Is this TD allocated? */ + /* bit1: Is this a dummy (end of list) TD? */ + /* bit2: do NOT automatically free this TD on completion */ + /* bit3: this is NOT the last TD in a contiguious TD chain + * on the indicated ED. (0 means it is the last) */ - /* User or Device class driver specific fields */ void *dev_id; /* user defined pointer passed to irq handler */ } __attribute((aligned(16))); @@ -54,6 +56,7 @@ struct ohci_td { #define td_set_dir_out(d) ((d) ? OHCI_TD_D_OUT : OHCI_TD_D_IN ) #define OHCI_TD_IOC_DELAY (7 << 21) /* frame delay allowed before int. */ #define OHCI_TD_IOC_OFF (OHCI_TD_IOC_DELAY) /* no interrupt on complete */ +#define td_set_ioc_delay(frames) (((frames) & 7) << 21) #define OHCI_TD_DT (3 << 24) /* data toggle bits */ #define TOGGLE_AUTO (0 << 24) /* automatic (from the ED) */ #define TOGGLE_DATA0 (2 << 24) /* force Data0 */ @@ -82,6 +85,19 @@ struct ohci_td { #define make_dumb_td(td) ((td)->hcd_flags |= 2) #define clear_dumb_td(td) ((td)->hcd_flags &= ~(__u32)2) +#define td_endofchain(td) (!((td).hcd_flags & (1 << 3))) +#define set_td_endofchain(td) ((td)->hcd_flags &= ~(1 << 3)) +#define clear_td_endofchain(td) ((td)->hcd_flags |= (1 << 3)) + +/* + * These control if the IRQ will call ohci_free_td after taking the TDs + * off of the donelist (assuming the completion function does not ask + * for the TD to be requeued). + */ +#define can_auto_free(td) (!((td).hcd_flags & 4)) +#define noauto_free_td(td) ((td)->hcd_flags |= 4) +#define auto_free_td(td) ((td)->hcd_flags &= ~(__u32)4) + /* * The endpoint descriptors also requires 16-byte alignment @@ -369,6 +385,7 @@ struct ohci { int irq; struct ohci_regs *regs; /* OHCI controller's memory */ struct usb_bus *bus; + struct ohci_device *root_hub; /* Root hub & controller */ struct list_head interrupt_list; /* List of interrupt active TDs for this OHCI */ }; @@ -380,6 +397,7 @@ struct ohci { /* Debugging code [ohci-debug.c] */ void show_ohci_ed(struct ohci_ed *ed); void show_ohci_td(struct ohci_td *td); +void show_ohci_td_chain(struct ohci_td *td); void show_ohci_status(struct ohci *ohci); void show_ohci_device(struct ohci_device *dev); void show_ohci_hcca(struct ohci_hcca *hcca); |