forked from Minki/linux
usb host: Faraday USB2.0 FUSBH200-HCD driver
FUSBH200-HCD is an USB2.0 hcd for Faraday FUSBH200. FUSBH200 is an ehci-like controller with some differences. First, register layout of FUSBH200 is incompatible with EHCI. Furthermore, FUSBH200 is lack of siTDs which means iTDs are used for both HS and FS ISO transfer. Signed-off-by: Yuan-Hsin Chen <yhchen@faraday-tech.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yuan-Hsin Chen
Greg Kroah-Hartman
parent
a1fefaab1b
commit
6c920bfb98
@ -25,6 +25,7 @@ obj-$(CONFIG_USB_HWA_HCD) += host/
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obj-$(CONFIG_USB_ISP1760_HCD) += host/
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obj-$(CONFIG_USB_IMX21_HCD) += host/
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obj-$(CONFIG_USB_FSL_MPH_DR_OF) += host/
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obj-$(CONFIG_USB_FUSBH200_HCD) += host/
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obj-$(CONFIG_USB_C67X00_HCD) += c67x00/
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@ -345,6 +345,17 @@ config USB_ISP1362_HCD
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To compile this driver as a module, choose M here: the
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module will be called isp1362-hcd.
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config USB_FUSBH200_HCD
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tristate "FUSBH200 HCD support"
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depends on USB
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default N
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---help---
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Faraday FUSBH200 is designed to meet USB2.0 EHCI specification
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with minor modification.
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To compile this driver as a module, choose M here: the
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module will be called fusbh200-hcd.
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config USB_OHCI_HCD
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tristate "OHCI HCD support"
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depends on USB_ARCH_HAS_OHCI
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@ -52,3 +52,4 @@ obj-$(CONFIG_USB_FSL_MPH_DR_OF) += fsl-mph-dr-of.o
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obj-$(CONFIG_USB_OCTEON2_COMMON) += octeon2-common.o
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obj-$(CONFIG_USB_HCD_BCMA) += bcma-hcd.o
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obj-$(CONFIG_USB_HCD_SSB) += ssb-hcd.o
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obj-$(CONFIG_USB_FUSBH200_HCD) += fusbh200-hcd.o
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5975
drivers/usb/host/fusbh200-hcd.c
Normal file
5975
drivers/usb/host/fusbh200-hcd.c
Normal file
File diff suppressed because it is too large
Load Diff
743
drivers/usb/host/fusbh200.h
Normal file
743
drivers/usb/host/fusbh200.h
Normal file
@ -0,0 +1,743 @@
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#ifndef __LINUX_FUSBH200_H
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#define __LINUX_FUSBH200_H
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/* definitions used for the EHCI driver */
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/*
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* __hc32 and __hc16 are "Host Controller" types, they may be equivalent to
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* __leXX (normally) or __beXX (given FUSBH200_BIG_ENDIAN_DESC), depending on
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* the host controller implementation.
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*
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* To facilitate the strongest possible byte-order checking from "sparse"
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* and so on, we use __leXX unless that's not practical.
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*/
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#define __hc32 __le32
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#define __hc16 __le16
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/* statistics can be kept for tuning/monitoring */
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struct fusbh200_stats {
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/* irq usage */
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unsigned long normal;
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unsigned long error;
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unsigned long iaa;
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unsigned long lost_iaa;
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/* termination of urbs from core */
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unsigned long complete;
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unsigned long unlink;
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};
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/* fusbh200_hcd->lock guards shared data against other CPUs:
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* fusbh200_hcd: async, unlink, periodic (and shadow), ...
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* usb_host_endpoint: hcpriv
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* fusbh200_qh: qh_next, qtd_list
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* fusbh200_qtd: qtd_list
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*
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* Also, hold this lock when talking to HC registers or
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* when updating hw_* fields in shared qh/qtd/... structures.
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*/
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#define FUSBH200_MAX_ROOT_PORTS 1 /* see HCS_N_PORTS */
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/*
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* fusbh200_rh_state values of FUSBH200_RH_RUNNING or above mean that the
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* controller may be doing DMA. Lower values mean there's no DMA.
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*/
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enum fusbh200_rh_state {
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FUSBH200_RH_HALTED,
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FUSBH200_RH_SUSPENDED,
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FUSBH200_RH_RUNNING,
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FUSBH200_RH_STOPPING
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};
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/*
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* Timer events, ordered by increasing delay length.
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* Always update event_delays_ns[] and event_handlers[] (defined in
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* ehci-timer.c) in parallel with this list.
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*/
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enum fusbh200_hrtimer_event {
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FUSBH200_HRTIMER_POLL_ASS, /* Poll for async schedule off */
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FUSBH200_HRTIMER_POLL_PSS, /* Poll for periodic schedule off */
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FUSBH200_HRTIMER_POLL_DEAD, /* Wait for dead controller to stop */
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FUSBH200_HRTIMER_UNLINK_INTR, /* Wait for interrupt QH unlink */
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FUSBH200_HRTIMER_FREE_ITDS, /* Wait for unused iTDs and siTDs */
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FUSBH200_HRTIMER_ASYNC_UNLINKS, /* Unlink empty async QHs */
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FUSBH200_HRTIMER_IAA_WATCHDOG, /* Handle lost IAA interrupts */
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FUSBH200_HRTIMER_DISABLE_PERIODIC, /* Wait to disable periodic sched */
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FUSBH200_HRTIMER_DISABLE_ASYNC, /* Wait to disable async sched */
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FUSBH200_HRTIMER_IO_WATCHDOG, /* Check for missing IRQs */
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FUSBH200_HRTIMER_NUM_EVENTS /* Must come last */
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};
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#define FUSBH200_HRTIMER_NO_EVENT 99
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struct fusbh200_hcd { /* one per controller */
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/* timing support */
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enum fusbh200_hrtimer_event next_hrtimer_event;
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unsigned enabled_hrtimer_events;
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ktime_t hr_timeouts[FUSBH200_HRTIMER_NUM_EVENTS];
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struct hrtimer hrtimer;
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int PSS_poll_count;
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int ASS_poll_count;
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int died_poll_count;
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/* glue to PCI and HCD framework */
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struct fusbh200_caps __iomem *caps;
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struct fusbh200_regs __iomem *regs;
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struct fusbh200_dbg_port __iomem *debug;
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__u32 hcs_params; /* cached register copy */
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spinlock_t lock;
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enum fusbh200_rh_state rh_state;
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/* general schedule support */
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bool scanning:1;
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bool need_rescan:1;
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bool intr_unlinking:1;
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bool async_unlinking:1;
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bool shutdown:1;
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struct fusbh200_qh *qh_scan_next;
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/* async schedule support */
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struct fusbh200_qh *async;
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struct fusbh200_qh *dummy; /* For AMD quirk use */
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struct fusbh200_qh *async_unlink;
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struct fusbh200_qh *async_unlink_last;
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struct fusbh200_qh *async_iaa;
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unsigned async_unlink_cycle;
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unsigned async_count; /* async activity count */
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/* periodic schedule support */
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#define DEFAULT_I_TDPS 1024 /* some HCs can do less */
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unsigned periodic_size;
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__hc32 *periodic; /* hw periodic table */
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dma_addr_t periodic_dma;
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struct list_head intr_qh_list;
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unsigned i_thresh; /* uframes HC might cache */
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union fusbh200_shadow *pshadow; /* mirror hw periodic table */
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struct fusbh200_qh *intr_unlink;
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struct fusbh200_qh *intr_unlink_last;
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unsigned intr_unlink_cycle;
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unsigned now_frame; /* frame from HC hardware */
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unsigned next_frame; /* scan periodic, start here */
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unsigned intr_count; /* intr activity count */
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unsigned isoc_count; /* isoc activity count */
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unsigned periodic_count; /* periodic activity count */
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unsigned uframe_periodic_max; /* max periodic time per uframe */
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/* list of itds completed while now_frame was still active */
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struct list_head cached_itd_list;
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struct fusbh200_itd *last_itd_to_free;
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/* per root hub port */
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unsigned long reset_done [FUSBH200_MAX_ROOT_PORTS];
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/* bit vectors (one bit per port) */
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unsigned long bus_suspended; /* which ports were
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already suspended at the start of a bus suspend */
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unsigned long companion_ports; /* which ports are
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dedicated to the companion controller */
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unsigned long owned_ports; /* which ports are
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owned by the companion during a bus suspend */
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unsigned long port_c_suspend; /* which ports have
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the change-suspend feature turned on */
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unsigned long suspended_ports; /* which ports are
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suspended */
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unsigned long resuming_ports; /* which ports have
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started to resume */
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/* per-HC memory pools (could be per-bus, but ...) */
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struct dma_pool *qh_pool; /* qh per active urb */
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struct dma_pool *qtd_pool; /* one or more per qh */
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struct dma_pool *itd_pool; /* itd per iso urb */
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unsigned random_frame;
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unsigned long next_statechange;
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ktime_t last_periodic_enable;
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u32 command;
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/* SILICON QUIRKS */
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unsigned need_io_watchdog:1;
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unsigned fs_i_thresh:1; /* Intel iso scheduling */
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u8 sbrn; /* packed release number */
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/* irq statistics */
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#ifdef FUSBH200_STATS
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struct fusbh200_stats stats;
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# define COUNT(x) do { (x)++; } while (0)
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#else
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# define COUNT(x) do {} while (0)
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#endif
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/* debug files */
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#ifdef DEBUG
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struct dentry *debug_dir;
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#endif
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};
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/* convert between an HCD pointer and the corresponding FUSBH200_HCD */
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static inline struct fusbh200_hcd *hcd_to_fusbh200 (struct usb_hcd *hcd)
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{
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return (struct fusbh200_hcd *) (hcd->hcd_priv);
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}
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static inline struct usb_hcd *fusbh200_to_hcd (struct fusbh200_hcd *fusbh200)
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{
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return container_of ((void *) fusbh200, struct usb_hcd, hcd_priv);
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}
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/*-------------------------------------------------------------------------*/
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/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
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/* Section 2.2 Host Controller Capability Registers */
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struct fusbh200_caps {
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/* these fields are specified as 8 and 16 bit registers,
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* but some hosts can't perform 8 or 16 bit PCI accesses.
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* some hosts treat caplength and hciversion as parts of a 32-bit
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* register, others treat them as two separate registers, this
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* affects the memory map for big endian controllers.
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*/
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u32 hc_capbase;
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#define HC_LENGTH(fusbh200, p) (0x00ff&((p) >> /* bits 7:0 / offset 00h */ \
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(fusbh200_big_endian_capbase(fusbh200) ? 24 : 0)))
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#define HC_VERSION(fusbh200, p) (0xffff&((p) >> /* bits 31:16 / offset 02h */ \
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(fusbh200_big_endian_capbase(fusbh200) ? 0 : 16)))
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u32 hcs_params; /* HCSPARAMS - offset 0x4 */
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#define HCS_N_PORTS(p) (((p)>>0)&0xf) /* bits 3:0, ports on HC */
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u32 hcc_params; /* HCCPARAMS - offset 0x8 */
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#define HCC_CANPARK(p) ((p)&(1 << 2)) /* true: can park on async qh */
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#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1)) /* true: periodic_size changes*/
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u8 portroute[8]; /* nibbles for routing - offset 0xC */
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};
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/* Section 2.3 Host Controller Operational Registers */
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struct fusbh200_regs {
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/* USBCMD: offset 0x00 */
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u32 command;
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/* EHCI 1.1 addendum */
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/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
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#define CMD_PARK (1<<11) /* enable "park" on async qh */
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#define CMD_PARK_CNT(c) (((c)>>8)&3) /* how many transfers to park for */
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#define CMD_IAAD (1<<6) /* "doorbell" interrupt async advance */
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#define CMD_ASE (1<<5) /* async schedule enable */
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#define CMD_PSE (1<<4) /* periodic schedule enable */
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/* 3:2 is periodic frame list size */
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#define CMD_RESET (1<<1) /* reset HC not bus */
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#define CMD_RUN (1<<0) /* start/stop HC */
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/* USBSTS: offset 0x04 */
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u32 status;
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#define STS_ASS (1<<15) /* Async Schedule Status */
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#define STS_PSS (1<<14) /* Periodic Schedule Status */
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#define STS_RECL (1<<13) /* Reclamation */
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#define STS_HALT (1<<12) /* Not running (any reason) */
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/* some bits reserved */
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/* these STS_* flags are also intr_enable bits (USBINTR) */
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#define STS_IAA (1<<5) /* Interrupted on async advance */
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#define STS_FATAL (1<<4) /* such as some PCI access errors */
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#define STS_FLR (1<<3) /* frame list rolled over */
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#define STS_PCD (1<<2) /* port change detect */
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#define STS_ERR (1<<1) /* "error" completion (overflow, ...) */
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#define STS_INT (1<<0) /* "normal" completion (short, ...) */
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/* USBINTR: offset 0x08 */
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u32 intr_enable;
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/* FRINDEX: offset 0x0C */
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u32 frame_index; /* current microframe number */
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/* CTRLDSSEGMENT: offset 0x10 */
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u32 segment; /* address bits 63:32 if needed */
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/* PERIODICLISTBASE: offset 0x14 */
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u32 frame_list; /* points to periodic list */
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/* ASYNCLISTADDR: offset 0x18 */
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u32 async_next; /* address of next async queue head */
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u32 reserved1;
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/* PORTSC: offset 0x20 */
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u32 port_status;
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/* 31:23 reserved */
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#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10)) /* USB 1.1 device */
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#define PORT_RESET (1<<8) /* reset port */
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#define PORT_SUSPEND (1<<7) /* suspend port */
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#define PORT_RESUME (1<<6) /* resume it */
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#define PORT_PEC (1<<3) /* port enable change */
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#define PORT_PE (1<<2) /* port enable */
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#define PORT_CSC (1<<1) /* connect status change */
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#define PORT_CONNECT (1<<0) /* device connected */
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#define PORT_RWC_BITS (PORT_CSC | PORT_PEC)
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u32 reserved2[3];
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/* BMCSR: offset 0x30 */
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u32 bmcsr; /* Bus Moniter Control/Status Register */
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#define BMCSR_HOST_SPD_TYP (3<<9)
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#define BMCSR_VBUS_OFF (1<<4)
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#define BMCSR_INT_POLARITY (1<<3)
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/* BMISR: offset 0x34 */
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u32 bmisr; /* Bus Moniter Interrupt Status Register*/
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#define BMISR_OVC (1<<1)
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/* BMIER: offset 0x38 */
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u32 bmier; /* Bus Moniter Interrupt Enable Register */
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#define BMIER_OVC_EN (1<<1)
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#define BMIER_VBUS_ERR_EN (1<<0)
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};
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/* Appendix C, Debug port ... intended for use with special "debug devices"
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* that can help if there's no serial console. (nonstandard enumeration.)
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*/
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struct fusbh200_dbg_port {
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u32 control;
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#define DBGP_OWNER (1<<30)
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#define DBGP_ENABLED (1<<28)
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#define DBGP_DONE (1<<16)
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#define DBGP_INUSE (1<<10)
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#define DBGP_ERRCODE(x) (((x)>>7)&0x07)
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# define DBGP_ERR_BAD 1
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# define DBGP_ERR_SIGNAL 2
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#define DBGP_ERROR (1<<6)
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#define DBGP_GO (1<<5)
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#define DBGP_OUT (1<<4)
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#define DBGP_LEN(x) (((x)>>0)&0x0f)
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u32 pids;
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#define DBGP_PID_GET(x) (((x)>>16)&0xff)
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#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
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u32 data03;
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u32 data47;
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u32 address;
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#define DBGP_EPADDR(dev, ep) (((dev)<<8)|(ep))
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};
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#ifdef CONFIG_EARLY_PRINTK_DBGP
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#include <linux/init.h>
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extern int __init early_dbgp_init(char *s);
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extern struct console early_dbgp_console;
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#endif /* CONFIG_EARLY_PRINTK_DBGP */
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struct usb_hcd;
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static inline int xen_dbgp_reset_prep(struct usb_hcd *hcd)
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{
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return 1; /* Shouldn't this be 0? */
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}
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static inline int xen_dbgp_external_startup(struct usb_hcd *hcd)
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{
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return -1;
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}
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#ifdef CONFIG_EARLY_PRINTK_DBGP
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/* Call backs from fusbh200 host driver to fusbh200 debug driver */
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extern int dbgp_external_startup(struct usb_hcd *);
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extern int dbgp_reset_prep(struct usb_hcd *hcd);
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#else
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static inline int dbgp_reset_prep(struct usb_hcd *hcd)
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{
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return xen_dbgp_reset_prep(hcd);
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}
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static inline int dbgp_external_startup(struct usb_hcd *hcd)
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{
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return xen_dbgp_external_startup(hcd);
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}
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#endif
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/*-------------------------------------------------------------------------*/
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#define QTD_NEXT(fusbh200, dma) cpu_to_hc32(fusbh200, (u32)dma)
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/*
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* EHCI Specification 0.95 Section 3.5
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* QTD: describe data transfer components (buffer, direction, ...)
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* See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
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*
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* These are associated only with "QH" (Queue Head) structures,
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* used with control, bulk, and interrupt transfers.
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*/
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struct fusbh200_qtd {
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/* first part defined by EHCI spec */
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__hc32 hw_next; /* see EHCI 3.5.1 */
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__hc32 hw_alt_next; /* see EHCI 3.5.2 */
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__hc32 hw_token; /* see EHCI 3.5.3 */
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#define QTD_TOGGLE (1 << 31) /* data toggle */
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#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff)
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#define QTD_IOC (1 << 15) /* interrupt on complete */
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#define QTD_CERR(tok) (((tok)>>10) & 0x3)
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#define QTD_PID(tok) (((tok)>>8) & 0x3)
|
||||
#define QTD_STS_ACTIVE (1 << 7) /* HC may execute this */
|
||||
#define QTD_STS_HALT (1 << 6) /* halted on error */
|
||||
#define QTD_STS_DBE (1 << 5) /* data buffer error (in HC) */
|
||||
#define QTD_STS_BABBLE (1 << 4) /* device was babbling (qtd halted) */
|
||||
#define QTD_STS_XACT (1 << 3) /* device gave illegal response */
|
||||
#define QTD_STS_MMF (1 << 2) /* incomplete split transaction */
|
||||
#define QTD_STS_STS (1 << 1) /* split transaction state */
|
||||
#define QTD_STS_PING (1 << 0) /* issue PING? */
|
||||
|
||||
#define ACTIVE_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_ACTIVE)
|
||||
#define HALT_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_HALT)
|
||||
#define STATUS_BIT(fusbh200) cpu_to_hc32(fusbh200, QTD_STS_STS)
|
||||
|
||||
__hc32 hw_buf [5]; /* see EHCI 3.5.4 */
|
||||
__hc32 hw_buf_hi [5]; /* Appendix B */
|
||||
|
||||
/* the rest is HCD-private */
|
||||
dma_addr_t qtd_dma; /* qtd address */
|
||||
struct list_head qtd_list; /* sw qtd list */
|
||||
struct urb *urb; /* qtd's urb */
|
||||
size_t length; /* length of buffer */
|
||||
} __attribute__ ((aligned (32)));
|
||||
|
||||
/* mask NakCnt+T in qh->hw_alt_next */
|
||||
#define QTD_MASK(fusbh200) cpu_to_hc32 (fusbh200, ~0x1f)
|
||||
|
||||
#define IS_SHORT_READ(token) (QTD_LENGTH (token) != 0 && QTD_PID (token) == 1)
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/* type tag from {qh,itd,fstn}->hw_next */
|
||||
#define Q_NEXT_TYPE(fusbh200,dma) ((dma) & cpu_to_hc32(fusbh200, 3 << 1))
|
||||
|
||||
/*
|
||||
* Now the following defines are not converted using the
|
||||
* cpu_to_le32() macro anymore, since we have to support
|
||||
* "dynamic" switching between be and le support, so that the driver
|
||||
* can be used on one system with SoC EHCI controller using big-endian
|
||||
* descriptors as well as a normal little-endian PCI EHCI controller.
|
||||
*/
|
||||
/* values for that type tag */
|
||||
#define Q_TYPE_ITD (0 << 1)
|
||||
#define Q_TYPE_QH (1 << 1)
|
||||
#define Q_TYPE_SITD (2 << 1)
|
||||
#define Q_TYPE_FSTN (3 << 1)
|
||||
|
||||
/* next async queue entry, or pointer to interrupt/periodic QH */
|
||||
#define QH_NEXT(fusbh200,dma) (cpu_to_hc32(fusbh200, (((u32)dma)&~0x01f)|Q_TYPE_QH))
|
||||
|
||||
/* for periodic/async schedules and qtd lists, mark end of list */
|
||||
#define FUSBH200_LIST_END(fusbh200) cpu_to_hc32(fusbh200, 1) /* "null pointer" to hw */
|
||||
|
||||
/*
|
||||
* Entries in periodic shadow table are pointers to one of four kinds
|
||||
* of data structure. That's dictated by the hardware; a type tag is
|
||||
* encoded in the low bits of the hardware's periodic schedule. Use
|
||||
* Q_NEXT_TYPE to get the tag.
|
||||
*
|
||||
* For entries in the async schedule, the type tag always says "qh".
|
||||
*/
|
||||
union fusbh200_shadow {
|
||||
struct fusbh200_qh *qh; /* Q_TYPE_QH */
|
||||
struct fusbh200_itd *itd; /* Q_TYPE_ITD */
|
||||
struct fusbh200_fstn *fstn; /* Q_TYPE_FSTN */
|
||||
__hc32 *hw_next; /* (all types) */
|
||||
void *ptr;
|
||||
};
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* EHCI Specification 0.95 Section 3.6
|
||||
* QH: describes control/bulk/interrupt endpoints
|
||||
* See Fig 3-7 "Queue Head Structure Layout".
|
||||
*
|
||||
* These appear in both the async and (for interrupt) periodic schedules.
|
||||
*/
|
||||
|
||||
/* first part defined by EHCI spec */
|
||||
struct fusbh200_qh_hw {
|
||||
__hc32 hw_next; /* see EHCI 3.6.1 */
|
||||
__hc32 hw_info1; /* see EHCI 3.6.2 */
|
||||
#define QH_CONTROL_EP (1 << 27) /* FS/LS control endpoint */
|
||||
#define QH_HEAD (1 << 15) /* Head of async reclamation list */
|
||||
#define QH_TOGGLE_CTL (1 << 14) /* Data toggle control */
|
||||
#define QH_HIGH_SPEED (2 << 12) /* Endpoint speed */
|
||||
#define QH_LOW_SPEED (1 << 12)
|
||||
#define QH_FULL_SPEED (0 << 12)
|
||||
#define QH_INACTIVATE (1 << 7) /* Inactivate on next transaction */
|
||||
__hc32 hw_info2; /* see EHCI 3.6.2 */
|
||||
#define QH_SMASK 0x000000ff
|
||||
#define QH_CMASK 0x0000ff00
|
||||
#define QH_HUBADDR 0x007f0000
|
||||
#define QH_HUBPORT 0x3f800000
|
||||
#define QH_MULT 0xc0000000
|
||||
__hc32 hw_current; /* qtd list - see EHCI 3.6.4 */
|
||||
|
||||
/* qtd overlay (hardware parts of a struct fusbh200_qtd) */
|
||||
__hc32 hw_qtd_next;
|
||||
__hc32 hw_alt_next;
|
||||
__hc32 hw_token;
|
||||
__hc32 hw_buf [5];
|
||||
__hc32 hw_buf_hi [5];
|
||||
} __attribute__ ((aligned(32)));
|
||||
|
||||
struct fusbh200_qh {
|
||||
struct fusbh200_qh_hw *hw; /* Must come first */
|
||||
/* the rest is HCD-private */
|
||||
dma_addr_t qh_dma; /* address of qh */
|
||||
union fusbh200_shadow qh_next; /* ptr to qh; or periodic */
|
||||
struct list_head qtd_list; /* sw qtd list */
|
||||
struct list_head intr_node; /* list of intr QHs */
|
||||
struct fusbh200_qtd *dummy;
|
||||
struct fusbh200_qh *unlink_next; /* next on unlink list */
|
||||
|
||||
unsigned unlink_cycle;
|
||||
|
||||
u8 needs_rescan; /* Dequeue during giveback */
|
||||
u8 qh_state;
|
||||
#define QH_STATE_LINKED 1 /* HC sees this */
|
||||
#define QH_STATE_UNLINK 2 /* HC may still see this */
|
||||
#define QH_STATE_IDLE 3 /* HC doesn't see this */
|
||||
#define QH_STATE_UNLINK_WAIT 4 /* LINKED and on unlink q */
|
||||
#define QH_STATE_COMPLETING 5 /* don't touch token.HALT */
|
||||
|
||||
u8 xacterrs; /* XactErr retry counter */
|
||||
#define QH_XACTERR_MAX 32 /* XactErr retry limit */
|
||||
|
||||
/* periodic schedule info */
|
||||
u8 usecs; /* intr bandwidth */
|
||||
u8 gap_uf; /* uframes split/csplit gap */
|
||||
u8 c_usecs; /* ... split completion bw */
|
||||
u16 tt_usecs; /* tt downstream bandwidth */
|
||||
unsigned short period; /* polling interval */
|
||||
unsigned short start; /* where polling starts */
|
||||
#define NO_FRAME ((unsigned short)~0) /* pick new start */
|
||||
|
||||
struct usb_device *dev; /* access to TT */
|
||||
unsigned is_out:1; /* bulk or intr OUT */
|
||||
unsigned clearing_tt:1; /* Clear-TT-Buf in progress */
|
||||
};
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/* description of one iso transaction (up to 3 KB data if highspeed) */
|
||||
struct fusbh200_iso_packet {
|
||||
/* These will be copied to iTD when scheduling */
|
||||
u64 bufp; /* itd->hw_bufp{,_hi}[pg] |= */
|
||||
__hc32 transaction; /* itd->hw_transaction[i] |= */
|
||||
u8 cross; /* buf crosses pages */
|
||||
/* for full speed OUT splits */
|
||||
u32 buf1;
|
||||
};
|
||||
|
||||
/* temporary schedule data for packets from iso urbs (both speeds)
|
||||
* each packet is one logical usb transaction to the device (not TT),
|
||||
* beginning at stream->next_uframe
|
||||
*/
|
||||
struct fusbh200_iso_sched {
|
||||
struct list_head td_list;
|
||||
unsigned span;
|
||||
struct fusbh200_iso_packet packet [0];
|
||||
};
|
||||
|
||||
/*
|
||||
* fusbh200_iso_stream - groups all (s)itds for this endpoint.
|
||||
* acts like a qh would, if EHCI had them for ISO.
|
||||
*/
|
||||
struct fusbh200_iso_stream {
|
||||
/* first field matches fusbh200_hq, but is NULL */
|
||||
struct fusbh200_qh_hw *hw;
|
||||
|
||||
u8 bEndpointAddress;
|
||||
u8 highspeed;
|
||||
struct list_head td_list; /* queued itds */
|
||||
struct list_head free_list; /* list of unused itds */
|
||||
struct usb_device *udev;
|
||||
struct usb_host_endpoint *ep;
|
||||
|
||||
/* output of (re)scheduling */
|
||||
int next_uframe;
|
||||
__hc32 splits;
|
||||
|
||||
/* the rest is derived from the endpoint descriptor,
|
||||
* trusting urb->interval == f(epdesc->bInterval) and
|
||||
* including the extra info for hw_bufp[0..2]
|
||||
*/
|
||||
u8 usecs, c_usecs;
|
||||
u16 interval;
|
||||
u16 tt_usecs;
|
||||
u16 maxp;
|
||||
u16 raw_mask;
|
||||
unsigned bandwidth;
|
||||
|
||||
/* This is used to initialize iTD's hw_bufp fields */
|
||||
__hc32 buf0;
|
||||
__hc32 buf1;
|
||||
__hc32 buf2;
|
||||
|
||||
/* this is used to initialize sITD's tt info */
|
||||
__hc32 address;
|
||||
};
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* EHCI Specification 0.95 Section 3.3
|
||||
* Fig 3-4 "Isochronous Transaction Descriptor (iTD)"
|
||||
*
|
||||
* Schedule records for high speed iso xfers
|
||||
*/
|
||||
struct fusbh200_itd {
|
||||
/* first part defined by EHCI spec */
|
||||
__hc32 hw_next; /* see EHCI 3.3.1 */
|
||||
__hc32 hw_transaction [8]; /* see EHCI 3.3.2 */
|
||||
#define FUSBH200_ISOC_ACTIVE (1<<31) /* activate transfer this slot */
|
||||
#define FUSBH200_ISOC_BUF_ERR (1<<30) /* Data buffer error */
|
||||
#define FUSBH200_ISOC_BABBLE (1<<29) /* babble detected */
|
||||
#define FUSBH200_ISOC_XACTERR (1<<28) /* XactErr - transaction error */
|
||||
#define FUSBH200_ITD_LENGTH(tok) (((tok)>>16) & 0x0fff)
|
||||
#define FUSBH200_ITD_IOC (1 << 15) /* interrupt on complete */
|
||||
|
||||
#define ITD_ACTIVE(fusbh200) cpu_to_hc32(fusbh200, FUSBH200_ISOC_ACTIVE)
|
||||
|
||||
__hc32 hw_bufp [7]; /* see EHCI 3.3.3 */
|
||||
__hc32 hw_bufp_hi [7]; /* Appendix B */
|
||||
|
||||
/* the rest is HCD-private */
|
||||
dma_addr_t itd_dma; /* for this itd */
|
||||
union fusbh200_shadow itd_next; /* ptr to periodic q entry */
|
||||
|
||||
struct urb *urb;
|
||||
struct fusbh200_iso_stream *stream; /* endpoint's queue */
|
||||
struct list_head itd_list; /* list of stream's itds */
|
||||
|
||||
/* any/all hw_transactions here may be used by that urb */
|
||||
unsigned frame; /* where scheduled */
|
||||
unsigned pg;
|
||||
unsigned index[8]; /* in urb->iso_frame_desc */
|
||||
} __attribute__ ((aligned (32)));
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* EHCI Specification 0.96 Section 3.7
|
||||
* Periodic Frame Span Traversal Node (FSTN)
|
||||
*
|
||||
* Manages split interrupt transactions (using TT) that span frame boundaries
|
||||
* into uframes 0/1; see 4.12.2.2. In those uframes, a "save place" FSTN
|
||||
* makes the HC jump (back) to a QH to scan for fs/ls QH completions until
|
||||
* it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work.
|
||||
*/
|
||||
struct fusbh200_fstn {
|
||||
__hc32 hw_next; /* any periodic q entry */
|
||||
__hc32 hw_prev; /* qh or FUSBH200_LIST_END */
|
||||
|
||||
/* the rest is HCD-private */
|
||||
dma_addr_t fstn_dma;
|
||||
union fusbh200_shadow fstn_next; /* ptr to periodic q entry */
|
||||
} __attribute__ ((aligned (32)));
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/* Prepare the PORTSC wakeup flags during controller suspend/resume */
|
||||
|
||||
#define fusbh200_prepare_ports_for_controller_suspend(fusbh200, do_wakeup) \
|
||||
fusbh200_adjust_port_wakeup_flags(fusbh200, true, do_wakeup);
|
||||
|
||||
#define fusbh200_prepare_ports_for_controller_resume(fusbh200) \
|
||||
fusbh200_adjust_port_wakeup_flags(fusbh200, false, false);
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
/*
|
||||
* Some EHCI controllers have a Transaction Translator built into the
|
||||
* root hub. This is a non-standard feature. Each controller will need
|
||||
* to add code to the following inline functions, and call them as
|
||||
* needed (mostly in root hub code).
|
||||
*/
|
||||
|
||||
static inline unsigned int
|
||||
fusbh200_get_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
|
||||
{
|
||||
return (readl(&fusbh200->regs->bmcsr)
|
||||
& BMCSR_HOST_SPD_TYP) >> 9;
|
||||
}
|
||||
|
||||
/* Returns the speed of a device attached to a port on the root hub. */
|
||||
static inline unsigned int
|
||||
fusbh200_port_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
|
||||
{
|
||||
switch (fusbh200_get_speed(fusbh200, portsc)) {
|
||||
case 0:
|
||||
return 0;
|
||||
case 1:
|
||||
return USB_PORT_STAT_LOW_SPEED;
|
||||
case 2:
|
||||
default:
|
||||
return USB_PORT_STAT_HIGH_SPEED;
|
||||
}
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
#define fusbh200_has_fsl_portno_bug(e) (0)
|
||||
|
||||
/*
|
||||
* While most USB host controllers implement their registers in
|
||||
* little-endian format, a minority (celleb companion chip) implement
|
||||
* them in big endian format.
|
||||
*
|
||||
* This attempts to support either format at compile time without a
|
||||
* runtime penalty, or both formats with the additional overhead
|
||||
* of checking a flag bit.
|
||||
*
|
||||
*/
|
||||
|
||||
#define fusbh200_big_endian_mmio(e) 0
|
||||
#define fusbh200_big_endian_capbase(e) 0
|
||||
|
||||
static inline unsigned int fusbh200_readl(const struct fusbh200_hcd *fusbh200,
|
||||
__u32 __iomem * regs)
|
||||
{
|
||||
return readl(regs);
|
||||
}
|
||||
|
||||
static inline void fusbh200_writel(const struct fusbh200_hcd *fusbh200,
|
||||
const unsigned int val, __u32 __iomem *regs)
|
||||
{
|
||||
writel(val, regs);
|
||||
}
|
||||
|
||||
/* cpu to fusbh200 */
|
||||
static inline __hc32 cpu_to_hc32 (const struct fusbh200_hcd *fusbh200, const u32 x)
|
||||
{
|
||||
return cpu_to_le32(x);
|
||||
}
|
||||
|
||||
/* fusbh200 to cpu */
|
||||
static inline u32 hc32_to_cpu (const struct fusbh200_hcd *fusbh200, const __hc32 x)
|
||||
{
|
||||
return le32_to_cpu(x);
|
||||
}
|
||||
|
||||
static inline u32 hc32_to_cpup (const struct fusbh200_hcd *fusbh200, const __hc32 *x)
|
||||
{
|
||||
return le32_to_cpup(x);
|
||||
}
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
static inline unsigned fusbh200_read_frame_index(struct fusbh200_hcd *fusbh200)
|
||||
{
|
||||
return fusbh200_readl(fusbh200, &fusbh200->regs->frame_index);
|
||||
}
|
||||
|
||||
#define fusbh200_itdlen(urb, desc, t) ({ \
|
||||
usb_pipein((urb)->pipe) ? \
|
||||
(desc)->length - FUSBH200_ITD_LENGTH(t) : \
|
||||
FUSBH200_ITD_LENGTH(t); \
|
||||
})
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
#ifndef DEBUG
|
||||
#define STUB_DEBUG_FILES
|
||||
#endif /* DEBUG */
|
||||
|
||||
/*-------------------------------------------------------------------------*/
|
||||
|
||||
#endif /* __LINUX_FUSBH200_H */
|
||||
Loading…
Reference in New Issue
Block a user