struct ed *ed_next; /* on schedule or rm_list */
struct ed *ed_prev; /* for non-interrupt EDs */
struct list_head td_list; /* "shadow list" of our TDs */
+ struct list_head in_use_list;
/* create --> IDLE --> OPER --> ... --> IDLE --> destroy
* usually: OPER --> UNLINK --> (IDLE | OPER) --> ...
/* HC may see EDs on rm_list until next frame (frame_no == tick) */
u16 tick;
+
+ /* Detect TDs not added to the done queue */
+ unsigned takeback_wdh_cnt;
+ struct td *pending_td;
+#define OKAY_TO_TAKEBACK(ohci, ed) \
+ ((int) (ohci->wdh_cnt - ed->takeback_wdh_cnt) >= 0)
+
} __attribute__ ((aligned(16)));
#define ED_MASK ((u32)~0x0f) /* strip hw status in low addr bits */
struct dma_pool *td_cache;
struct dma_pool *ed_cache;
struct td *td_hash [TD_HASH_SIZE];
+ struct td *dl_start, *dl_end; /* the done list */
struct list_head pending;
+ struct list_head eds_in_use; /* all EDs with at least 1 TD */
/*
* driver state
unsigned long next_statechange; /* suspend/resume */
u32 fminterval; /* saved register */
unsigned autostop:1; /* rh auto stopping/stopped */
+ unsigned working:1;
+ unsigned restart_work:1;
unsigned long flags; /* for HC bugs */
#define OHCI_QUIRK_AMD756 0x01 /* erratum #4 */
// there are also chip quirks/bugs in init logic
- struct work_struct nec_work; /* Worker for NEC quirk */
+ unsigned prev_frame_no;
+ unsigned wdh_cnt, prev_wdh_cnt;
+ u32 prev_donehead;
+ struct timer_list io_watchdog;
- /* Needed for ZF Micro quirk */
- struct timer_list unlink_watchdog;
- unsigned eds_scheduled;
- struct ed *ed_to_check;
- unsigned zf_delay;
+ struct work_struct nec_work; /* Worker for NEC quirk */
-#ifdef DEBUG
struct dentry *debug_dir;
struct dentry *debug_async;
struct dentry *debug_periodic;
struct dentry *debug_registers;
-#endif
+
+ /* platform-specific data -- must come last */
+ unsigned long priv[0] __aligned(sizeof(s64));
+
};
#ifdef CONFIG_PCI
/*-------------------------------------------------------------------------*/
-#ifndef DEBUG
-#define STUB_DEBUG_FILES
-#endif /* DEBUG */
-
#define ohci_dbg(ohci, fmt, args...) \
dev_dbg (ohci_to_hcd(ohci)->self.controller , fmt , ## args )
#define ohci_err(ohci, fmt, args...) \
#define ohci_warn(ohci, fmt, args...) \
dev_warn (ohci_to_hcd(ohci)->self.controller , fmt , ## args )
-#ifdef OHCI_VERBOSE_DEBUG
-# define ohci_vdbg ohci_dbg
-#else
-# define ohci_vdbg(ohci, fmt, args...) do { } while (0)
-#endif
-
/*-------------------------------------------------------------------------*/
/*
/*-------------------------------------------------------------------------*/
-/* HCCA frame number is 16 bits, but is accessed as 32 bits since not all
- * hardware handles 16 bit reads. That creates a different confusion on
- * some big-endian SOC implementations. Same thing happens with PSW access.
+/*
+ * The HCCA frame number is 16 bits, but is accessed as 32 bits since not all
+ * hardware handles 16 bit reads. Depending on the SoC implementation, the
+ * frame number can wind up in either bits [31:16] (default) or
+ * [15:0] (OHCI_QUIRK_FRAME_NO) on big endian hosts.
+ *
+ * Somewhat similarly, the 16-bit PSW fields in a transfer descriptor are
+ * reordered on BE.
*/
-#ifdef CONFIG_PPC_MPC52xx
-#define big_endian_frame_no_quirk(ohci) (ohci->flags & OHCI_QUIRK_FRAME_NO)
-#else
-#define big_endian_frame_no_quirk(ohci) 0
-#endif
-
static inline u16 ohci_frame_no(const struct ohci_hcd *ohci)
{
u32 tmp;
if (big_endian_desc(ohci)) {
tmp = be32_to_cpup((__force __be32 *)&ohci->hcca->frame_no);
- if (!big_endian_frame_no_quirk(ohci))
+ if (!(ohci->flags & OHCI_QUIRK_FRAME_NO))
tmp >>= 16;
} else
tmp = le32_to_cpup((__force __le32 *)&ohci->hcca->frame_no);
{ return ohci_readl (hc, &hc->regs->roothub.status); }
static inline u32 roothub_portstatus (struct ohci_hcd *hc, int i)
{ return read_roothub (hc, portstatus [i], 0xffe0fce0); }
+
+/* Declarations of things exported for use by ohci platform drivers */
+
+struct ohci_driver_overrides {
+ const char *product_desc;
+ size_t extra_priv_size;
+ int (*reset)(struct usb_hcd *hcd);
+};
+
+extern void ohci_init_driver(struct hc_driver *drv,
+ const struct ohci_driver_overrides *over);
+extern int ohci_restart(struct ohci_hcd *ohci);
+extern int ohci_setup(struct usb_hcd *hcd);
+#ifdef CONFIG_PM
+extern int ohci_suspend(struct usb_hcd *hcd, bool do_wakeup);
+extern int ohci_resume(struct usb_hcd *hcd, bool hibernated);
+#endif
+extern int ohci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength);
+extern int ohci_hub_status_data(struct usb_hcd *hcd, char *buf);
projects / firefly-linux-kernel-4.4.55.git / blobdiff