1 files changed, 447 insertions, 0 deletions

diff --git a/drivers/usb/host/oxu210hp.h b/drivers/usb/host/oxu210hp.h
new file mode 100644
index 000000000000..8910e271cc7d
--- /dev/null
+++ b/drivers/usb/host/oxu210hp.h
@@ -0,0 +1,447 @@
+/*
+ * Host interface registers
+ */
+
+#define OXU_DEVICEID                    0x00
+        #define OXU_REV_MASK            0xffff0000
+        #define OXU_REV_SHIFT           16
+        #define OXU_REV_2100            0x2100
+        #define OXU_BO_SHIFT            8
+        #define OXU_BO_MASK             (0x3 << OXU_BO_SHIFT)
+        #define OXU_MAJ_REV_SHIFT       4
+        #define OXU_MAJ_REV_MASK        (0xf << OXU_MAJ_REV_SHIFT)
+        #define OXU_MIN_REV_SHIFT       0
+        #define OXU_MIN_REV_MASK        (0xf << OXU_MIN_REV_SHIFT)
+#define OXU_HOSTIFCONFIG                0x04
+#define OXU_SOFTRESET                   0x08
+        #define OXU_SRESET              (1 << 0)
+
+#define OXU_PIOBURSTREADCTRL            0x0C
+
+#define OXU_CHIPIRQSTATUS               0x10
+#define OXU_CHIPIRQEN_SET               0x14
+#define OXU_CHIPIRQEN_CLR               0x18
+        #define OXU_USBSPHLPWUI         0x00000080
+        #define OXU_USBOTGLPWUI         0x00000040
+        #define OXU_USBSPHI             0x00000002
+        #define OXU_USBOTGI             0x00000001
+
+#define OXU_CLKCTRL_SET                 0x1C
+        #define OXU_SYSCLKEN            0x00000008
+        #define OXU_USBSPHCLKEN         0x00000002
+        #define OXU_USBOTGCLKEN         0x00000001
+
+#define OXU_ASO                         0x68
+        #define OXU_SPHPOEN             0x00000100
+        #define OXU_OVRCCURPUPDEN       0x00000800
+        #define OXU_ASO_OP              (1 << 10)
+        #define OXU_COMPARATOR          0x000004000
+
+#define OXU_USBMODE                     0x1A8
+        #define OXU_VBPS                0x00000020
+        #define OXU_ES_LITTLE           0x00000000
+        #define OXU_CM_HOST_ONLY        0x00000003
+
+/*
+ * Proper EHCI structs & defines
+ */
+
+/* Magic numbers that can affect system performance */
+#define EHCI_TUNE_CERR          3       /* 0-3 qtd retries; 0 == don't stop */
+#define EHCI_TUNE_RL_HS         4       /* nak throttle; see 4.9 */
+#define EHCI_TUNE_RL_TT         0
+#define EHCI_TUNE_MULT_HS       1       /* 1-3 transactions/uframe; 4.10.3 */
+#define EHCI_TUNE_MULT_TT       1
+#define EHCI_TUNE_FLS           2       /* (small) 256 frame schedule */
+
+struct oxu_hcd;
+
+/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
+
+/* Section 2.2 Host Controller Capability Registers */
+struct ehci_caps {
+        /* these fields are specified as 8 and 16 bit registers,
+         * but some hosts can't perform 8 or 16 bit PCI accesses.
+         */
+        u32             hc_capbase;
+#define HC_LENGTH(p)            (((p)>>00)&0x00ff)      /* bits 7:0 */
+#define HC_VERSION(p)           (((p)>>16)&0xffff)      /* bits 31:16 */
+        u32             hcs_params;     /* HCSPARAMS - offset 0x4 */
+#define HCS_DEBUG_PORT(p)       (((p)>>20)&0xf) /* bits 23:20, debug port? */
+#define HCS_INDICATOR(p)        ((p)&(1 << 16)) /* true: has port indicators */
+#define HCS_N_CC(p)             (((p)>>12)&0xf) /* bits 15:12, #companion HCs */
+#define HCS_N_PCC(p)            (((p)>>8)&0xf)  /* bits 11:8, ports per CC */
+#define HCS_PORTROUTED(p)       ((p)&(1 << 7))  /* true: port routing */
+#define HCS_PPC(p)              ((p)&(1 << 4))  /* true: port power control */
+#define HCS_N_PORTS(p)          (((p)>>0)&0xf)  /* bits 3:0, ports on HC */
+
+        u32             hcc_params;      /* HCCPARAMS - offset 0x8 */
+#define HCC_EXT_CAPS(p)         (((p)>>8)&0xff) /* for pci extended caps */
+#define HCC_ISOC_CACHE(p)       ((p)&(1 << 7))  /* true: can cache isoc frame */
+#define HCC_ISOC_THRES(p)       (((p)>>4)&0x7)  /* bits 6:4, uframes cached */
+#define HCC_CANPARK(p)          ((p)&(1 << 2))  /* true: can park on async qh */
+#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1))  /* true: periodic_size changes*/
+#define HCC_64BIT_ADDR(p)       ((p)&(1))       /* true: can use 64-bit addr */
+        u8              portroute[8];    /* nibbles for routing - offset 0xC */
+} __attribute__ ((packed));
+
+
+/* Section 2.3 Host Controller Operational Registers */
+struct ehci_regs {
+        /* USBCMD: offset 0x00 */
+        u32             command;
+/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
+#define CMD_PARK        (1<<11)         /* enable "park" on async qh */
+#define CMD_PARK_CNT(c) (((c)>>8)&3)    /* how many transfers to park for */
+#define CMD_LRESET      (1<<7)          /* partial reset (no ports, etc) */
+#define CMD_IAAD        (1<<6)          /* "doorbell" interrupt async advance */
+#define CMD_ASE         (1<<5)          /* async schedule enable */
+#define CMD_PSE         (1<<4)          /* periodic schedule enable */
+/* 3:2 is periodic frame list size */
+#define CMD_RESET       (1<<1)          /* reset HC not bus */
+#define CMD_RUN         (1<<0)          /* start/stop HC */
+
+        /* USBSTS: offset 0x04 */
+        u32             status;
+#define STS_ASS         (1<<15)         /* Async Schedule Status */
+#define STS_PSS         (1<<14)         /* Periodic Schedule Status */
+#define STS_RECL        (1<<13)         /* Reclamation */
+#define STS_HALT        (1<<12)         /* Not running (any reason) */
+/* some bits reserved */
+        /* these STS_* flags are also intr_enable bits (USBINTR) */
+#define STS_IAA         (1<<5)          /* Interrupted on async advance */
+#define STS_FATAL       (1<<4)          /* such as some PCI access errors */
+#define STS_FLR         (1<<3)          /* frame list rolled over */
+#define STS_PCD         (1<<2)          /* port change detect */
+#define STS_ERR         (1<<1)          /* "error" completion (overflow, ...) */
+#define STS_INT         (1<<0)          /* "normal" completion (short, ...) */
+
+#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
+
+        /* USBINTR: offset 0x08 */
+        u32             intr_enable;
+
+        /* FRINDEX: offset 0x0C */
+        u32             frame_index;    /* current microframe number */
+        /* CTRLDSSEGMENT: offset 0x10 */
+        u32             segment;        /* address bits 63:32 if needed */
+        /* PERIODICLISTBASE: offset 0x14 */
+        u32             frame_list;     /* points to periodic list */
+        /* ASYNCLISTADDR: offset 0x18 */
+        u32             async_next;     /* address of next async queue head */
+
+        u32             reserved[9];
+
+        /* CONFIGFLAG: offset 0x40 */
+        u32             configured_flag;
+#define FLAG_CF         (1<<0)          /* true: we'll support "high speed" */
+
+        /* PORTSC: offset 0x44 */
+        u32             port_status[0]; /* up to N_PORTS */
+/* 31:23 reserved */
+#define PORT_WKOC_E     (1<<22)         /* wake on overcurrent (enable) */
+#define PORT_WKDISC_E   (1<<21)         /* wake on disconnect (enable) */
+#define PORT_WKCONN_E   (1<<20)         /* wake on connect (enable) */
+/* 19:16 for port testing */
+#define PORT_LED_OFF    (0<<14)
+#define PORT_LED_AMBER  (1<<14)
+#define PORT_LED_GREEN  (2<<14)
+#define PORT_LED_MASK   (3<<14)
+#define PORT_OWNER      (1<<13)         /* true: companion hc owns this port */
+#define PORT_POWER      (1<<12)         /* true: has power (see PPC) */
+#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10))        /* USB 1.1 device */
+/* 11:10 for detecting lowspeed devices (reset vs release ownership) */
+/* 9 reserved */
+#define PORT_RESET      (1<<8)          /* reset port */
+#define PORT_SUSPEND    (1<<7)          /* suspend port */
+#define PORT_RESUME     (1<<6)          /* resume it */
+#define PORT_OCC        (1<<5)          /* over current change */
+#define PORT_OC         (1<<4)          /* over current active */
+#define PORT_PEC        (1<<3)          /* port enable change */
+#define PORT_PE         (1<<2)          /* port enable */
+#define PORT_CSC        (1<<1)          /* connect status change */
+#define PORT_CONNECT    (1<<0)          /* device connected */
+#define PORT_RWC_BITS   (PORT_CSC | PORT_PEC | PORT_OCC)
+} __attribute__ ((packed));
+
+/* Appendix C, Debug port ... intended for use with special "debug devices"
+ * that can help if there's no serial console.  (nonstandard enumeration.)
+ */
+struct ehci_dbg_port {
+        u32     control;
+#define DBGP_OWNER      (1<<30)
+#define DBGP_ENABLED    (1<<28)
+#define DBGP_DONE       (1<<16)
+#define DBGP_INUSE      (1<<10)
+#define DBGP_ERRCODE(x) (((x)>>7)&0x07)
+#       define DBGP_ERR_BAD     1
+#       define DBGP_ERR_SIGNAL  2
+#define DBGP_ERROR      (1<<6)
+#define DBGP_GO         (1<<5)
+#define DBGP_OUT        (1<<4)
+#define DBGP_LEN(x)     (((x)>>0)&0x0f)
+        u32     pids;
+#define DBGP_PID_GET(x)         (((x)>>16)&0xff)
+#define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
+        u32     data03;
+        u32     data47;
+        u32     address;
+#define DBGP_EPADDR(dev, ep)    (((dev)<<8)|(ep))
+} __attribute__ ((packed));
+
+
+#define QTD_NEXT(dma)   cpu_to_le32((u32)dma)
+
+/*
+ * EHCI Specification 0.95 Section 3.5
+ * QTD: describe data transfer components (buffer, direction, ...)
+ * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
+ *
+ * These are associated only with "QH" (Queue Head) structures,
+ * used with control, bulk, and interrupt transfers.
+ */
+struct ehci_qtd {
+        /* first part defined by EHCI spec */
+        __le32                  hw_next;                /* see EHCI 3.5.1 */
+        __le32                  hw_alt_next;            /* see EHCI 3.5.2 */
+        __le32                  hw_token;               /* see EHCI 3.5.3 */
+#define QTD_TOGGLE      (1 << 31)       /* data toggle */
+#define QTD_LENGTH(tok) (((tok)>>16) & 0x7fff)
+#define QTD_IOC         (1 << 15)       /* interrupt on complete */
+#define QTD_CERR(tok)   (((tok)>>10) & 0x3)
+#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? */
+        __le32                  hw_buf[5];              /* see EHCI 3.5.4 */
+        __le32                  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 */
+
+        u32                     qtd_buffer_len;
+        void                    *buffer;
+        dma_addr_t              buffer_dma;
+        void                    *transfer_buffer;
+        void                    *transfer_dma;
+} __attribute__ ((aligned(32)));
+
+/* mask NakCnt+T in qh->hw_alt_next */
+#define QTD_MASK __constant_cpu_to_le32 (~0x1f)
+
+#define IS_SHORT_READ(token) (QTD_LENGTH(token) != 0 && QTD_PID(token) == 1)
+
+/* Type tag from {qh, itd, sitd, fstn}->hw_next */
+#define Q_NEXT_TYPE(dma) ((dma) & __constant_cpu_to_le32 (3 << 1))
+
+/* values for that type tag */
+#define Q_TYPE_QH       __constant_cpu_to_le32 (1 << 1)
+
+/* next async queue entry, or pointer to interrupt/periodic QH */
+#define QH_NEXT(dma)    (cpu_to_le32(((u32)dma)&~0x01f)|Q_TYPE_QH)
+
+/* for periodic/async schedules and qtd lists, mark end of list */
+#define EHCI_LIST_END   __constant_cpu_to_le32(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 ehci_shadow {
+        struct ehci_qh          *qh;            /* Q_TYPE_QH */
+        __le32                  *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.
+ */
+
+struct ehci_qh {
+        /* first part defined by EHCI spec */
+        __le32                  hw_next;         /* see EHCI 3.6.1 */
+        __le32                  hw_info1;       /* see EHCI 3.6.2 */
+#define QH_HEAD         0x00008000
+        __le32                  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
+        __le32                  hw_current;      /* qtd list - see EHCI 3.6.4 */
+
+        /* qtd overlay (hardware parts of a struct ehci_qtd) */
+        __le32                  hw_qtd_next;
+        __le32                  hw_alt_next;
+        __le32                  hw_token;
+        __le32                  hw_buf[5];
+        __le32                  hw_buf_hi[5];
+
+        /* the rest is HCD-private */
+        dma_addr_t              qh_dma;         /* address of qh */
+        union ehci_shadow       qh_next;        /* ptr to qh; or periodic */
+        struct list_head        qtd_list;       /* sw qtd list */
+        struct ehci_qtd         *dummy;
+        struct ehci_qh          *reclaim;       /* next to reclaim */
+
+        struct oxu_hcd          *oxu;
+        struct kref             kref;
+        unsigned                stamp;
+
+        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 reclaim q */
+#define QH_STATE_COMPLETING     5               /* don't touch token.HALT */
+
+        /* 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 */
+} __attribute__ ((aligned(32)));
+
+/*
+ * Proper OXU210HP structs
+ */
+
+#define OXU_OTG_CORE_OFFSET     0x00400
+#define OXU_OTG_CAP_OFFSET      (OXU_OTG_CORE_OFFSET + 0x100)
+#define OXU_SPH_CORE_OFFSET     0x00800
+#define OXU_SPH_CAP_OFFSET      (OXU_SPH_CORE_OFFSET + 0x100)
+
+#define OXU_OTG_MEM             0xE000
+#define OXU_SPH_MEM             0x16000
+
+/* Only how many elements & element structure are specifies here. */
+/* 2 host controllers are enabled - total size <= 28 kbytes */
+#define DEFAULT_I_TDPS          1024
+#define QHEAD_NUM               16
+#define QTD_NUM                 32
+#define SITD_NUM                8
+#define MURB_NUM                8
+
+#define BUFFER_NUM              8
+#define BUFFER_SIZE             512
+
+struct oxu_info {
+        struct usb_hcd *hcd[2];
+};
+
+struct oxu_buf {
+        u8                      buffer[BUFFER_SIZE];
+} __attribute__ ((aligned(BUFFER_SIZE)));
+
+struct oxu_onchip_mem {
+        struct oxu_buf          db_pool[BUFFER_NUM];
+
+        u32                     frame_list[DEFAULT_I_TDPS];
+        struct ehci_qh          qh_pool[QHEAD_NUM];
+        struct ehci_qtd         qtd_pool[QTD_NUM];
+} __attribute__ ((aligned(4 << 10)));
+
+#define EHCI_MAX_ROOT_PORTS     15              /* see HCS_N_PORTS */
+
+struct oxu_murb {
+        struct urb              urb;
+        struct urb              *main;
+        u8                      last;
+};
+
+struct oxu_hcd {                                /* one per controller */
+        unsigned int            is_otg:1;
+
+        u8                      qh_used[QHEAD_NUM];
+        u8                      qtd_used[QTD_NUM];
+        u8                      db_used[BUFFER_NUM];
+        u8                      murb_used[MURB_NUM];
+
+        struct oxu_onchip_mem   __iomem *mem;
+        spinlock_t              mem_lock;
+
+        struct timer_list       urb_timer;
+
+        struct ehci_caps __iomem *caps;
+        struct ehci_regs __iomem *regs;
+
+        __u32                   hcs_params;     /* cached register copy */
+        spinlock_t              lock;
+
+        /* async schedule support */
+        struct ehci_qh          *async;
+        struct ehci_qh          *reclaim;
+        unsigned                reclaim_ready:1;
+        unsigned                scanning:1;
+
+        /* periodic schedule support */
+        unsigned                periodic_size;
+        __le32                  *periodic;      /* hw periodic table */
+        dma_addr_t              periodic_dma;
+        unsigned                i_thresh;       /* uframes HC might cache */
+
+        union ehci_shadow       *pshadow;       /* mirror hw periodic table */
+        int                     next_uframe;    /* scan periodic, start here */
+        unsigned                periodic_sched; /* periodic activity count */
+
+        /* per root hub port */
+        unsigned long           reset_done[EHCI_MAX_ROOT_PORTS];
+        /* bit vectors (one bit per port) */
+        unsigned long           bus_suspended;  /* which ports were
+                                                 * already suspended at the
+                                                 * start of a bus suspend
+                                                 */
+        unsigned long           companion_ports;/* which ports are dedicated
+                                                 * to the companion controller
+                                                 */
+
+        struct timer_list       watchdog;
+        unsigned long           actions;
+        unsigned                stamp;
+        unsigned long           next_statechange;
+        u32                     command;
+
+        /* SILICON QUIRKS */
+        struct list_head        urb_list;       /* this is the head to urb
+                                                 * queue that didn't get enough
+                                                 * resources
+                                                 */
+        struct oxu_murb         *murb_pool;     /* murb per split big urb */
+        unsigned urb_len;
+
+        u8                      sbrn;           /* packed release number */
+};
+
+#define EHCI_IAA_JIFFIES        (HZ/100)        /* arbitrary; ~10 msec */
+#define EHCI_IO_JIFFIES         (HZ/10)         /* io watchdog > irq_thresh */
+#define EHCI_ASYNC_JIFFIES      (HZ/20)         /* async idle timeout */
+#define EHCI_SHRINK_JIFFIES     (HZ/200)        /* async qh unlink delay */
+
+enum ehci_timer_action {
+        TIMER_IO_WATCHDOG,
+        TIMER_IAA_WATCHDOG,
+        TIMER_ASYNC_SHRINK,
+        TIMER_ASYNC_OFF,
+};
+
+#include <linux/oxu210hp.h>