1 files changed, 421 insertions, 0 deletions

diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.h b/drivers/usb/gadget/udc/fsl_qe_udc.h
new file mode 100644
index 000000000000..7026919fc901
--- /dev/null
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.h
@@ -0,0 +1,421 @@
+/*
+ * drivers/usb/gadget/qe_udc.h
+ *
+ * Copyright (C) 2006-2008 Freescale Semiconductor, Inc. All rights reserved.
+ *
+ *      Xiaobo Xie <X.Xie@freescale.com>
+ *      Li Yang <leoli@freescale.com>
+ *
+ * Description:
+ * Freescale USB device/endpoint management registers
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef __FSL_QE_UDC_H
+#define __FSL_QE_UDC_H
+
+/* SoC type */
+#define PORT_CPM        0
+#define PORT_QE         1
+
+#define USB_MAX_ENDPOINTS               4
+#define USB_MAX_PIPES                   USB_MAX_ENDPOINTS
+#define USB_EP0_MAX_SIZE                64
+#define USB_MAX_CTRL_PAYLOAD            0x4000
+#define USB_BDRING_LEN                  16
+#define USB_BDRING_LEN_RX               256
+#define USB_BDRING_LEN_TX               16
+#define MIN_EMPTY_BDS                   128
+#define MAX_DATA_BDS                    8
+#define USB_CRC_SIZE                    2
+#define USB_DIR_BOTH                    0x88
+#define R_BUF_MAXSIZE                   0x800
+#define USB_EP_PARA_ALIGNMENT           32
+
+/* USB Mode Register bit define */
+#define USB_MODE_EN             0x01
+#define USB_MODE_HOST           0x02
+#define USB_MODE_TEST           0x04
+#define USB_MODE_SFTE           0x08
+#define USB_MODE_RESUME         0x40
+#define USB_MODE_LSS            0x80
+
+/* USB Slave Address Register Mask */
+#define USB_SLVADDR_MASK        0x7F
+
+/* USB Endpoint register define */
+#define USB_EPNUM_MASK          0xF000
+#define USB_EPNUM_SHIFT         12
+
+#define USB_TRANS_MODE_SHIFT    8
+#define USB_TRANS_CTR           0x0000
+#define USB_TRANS_INT           0x0100
+#define USB_TRANS_BULK          0x0200
+#define USB_TRANS_ISO           0x0300
+
+#define USB_EP_MF               0x0020
+#define USB_EP_RTE              0x0010
+
+#define USB_THS_SHIFT           2
+#define USB_THS_MASK            0x000c
+#define USB_THS_NORMAL          0x0
+#define USB_THS_IGNORE_IN       0x0004
+#define USB_THS_NACK            0x0008
+#define USB_THS_STALL           0x000c
+
+#define USB_RHS_SHIFT           0
+#define USB_RHS_MASK            0x0003
+#define USB_RHS_NORMAL          0x0
+#define USB_RHS_IGNORE_OUT      0x0001
+#define USB_RHS_NACK            0x0002
+#define USB_RHS_STALL           0x0003
+
+#define USB_RTHS_MASK           0x000f
+
+/* USB Command Register define */
+#define USB_CMD_STR_FIFO        0x80
+#define USB_CMD_FLUSH_FIFO      0x40
+#define USB_CMD_ISFT            0x20
+#define USB_CMD_DSFT            0x10
+#define USB_CMD_EP_MASK         0x03
+
+/* USB Event and Mask Register define */
+#define USB_E_MSF_MASK          0x0800
+#define USB_E_SFT_MASK          0x0400
+#define USB_E_RESET_MASK        0x0200
+#define USB_E_IDLE_MASK         0x0100
+#define USB_E_TXE4_MASK         0x0080
+#define USB_E_TXE3_MASK         0x0040
+#define USB_E_TXE2_MASK         0x0020
+#define USB_E_TXE1_MASK         0x0010
+#define USB_E_SOF_MASK          0x0008
+#define USB_E_BSY_MASK          0x0004
+#define USB_E_TXB_MASK          0x0002
+#define USB_E_RXB_MASK          0x0001
+#define USBER_ALL_CLEAR         0x0fff
+
+#define USB_E_DEFAULT_DEVICE   (USB_E_RESET_MASK | USB_E_TXE4_MASK | \
+                                USB_E_TXE3_MASK | USB_E_TXE2_MASK | \
+                                USB_E_TXE1_MASK | USB_E_BSY_MASK | \
+                                USB_E_TXB_MASK | USB_E_RXB_MASK)
+
+#define USB_E_TXE_MASK         (USB_E_TXE4_MASK | USB_E_TXE3_MASK|\
+                                 USB_E_TXE2_MASK | USB_E_TXE1_MASK)
+/* USB Status Register define */
+#define USB_IDLE_STATUS_MASK    0x01
+
+/* USB Start of Frame Timer */
+#define USB_USSFT_MASK          0x3FFF
+
+/* USB Frame Number Register */
+#define USB_USFRN_MASK          0xFFFF
+
+struct usb_device_para{
+        u16     epptr[4];
+        u32     rstate;
+        u32     rptr;
+        u16     frame_n;
+        u16     rbcnt;
+        u32     rtemp;
+        u32     rxusb_data;
+        u16     rxuptr;
+        u8      reso[2];
+        u32     softbl;
+        u8      sofucrctemp;
+};
+
+struct usb_ep_para{
+        u16     rbase;
+        u16     tbase;
+        u8      rbmr;
+        u8      tbmr;
+        u16     mrblr;
+        u16     rbptr;
+        u16     tbptr;
+        u32     tstate;
+        u32     tptr;
+        u16     tcrc;
+        u16     tbcnt;
+        u32     ttemp;
+        u16     txusbu_ptr;
+        u8      reserve[2];
+};
+
+#define USB_BUSMODE_GBL         0x20
+#define USB_BUSMODE_BO_MASK     0x18
+#define USB_BUSMODE_BO_SHIFT    0x3
+#define USB_BUSMODE_BE          0x2
+#define USB_BUSMODE_CETM        0x04
+#define USB_BUSMODE_DTB         0x02
+
+/* Endpoint basic handle */
+#define ep_index(EP)            ((EP)->ep.desc->bEndpointAddress & 0xF)
+#define ep_maxpacket(EP)        ((EP)->ep.maxpacket)
+#define ep_is_in(EP)    ((ep_index(EP) == 0) ? (EP->udc->ep0_dir == \
+                        USB_DIR_IN) : ((EP)->ep.desc->bEndpointAddress \
+                        & USB_DIR_IN) == USB_DIR_IN)
+
+/* ep0 transfer state */
+#define WAIT_FOR_SETUP          0
+#define DATA_STATE_XMIT         1
+#define DATA_STATE_NEED_ZLP     2
+#define WAIT_FOR_OUT_STATUS     3
+#define DATA_STATE_RECV         4
+
+/* ep tramsfer mode */
+#define USBP_TM_CTL     0
+#define USBP_TM_ISO     1
+#define USBP_TM_BULK    2
+#define USBP_TM_INT     3
+
+/*-----------------------------------------------------------------------------
+        USB RX And TX DATA Frame
+ -----------------------------------------------------------------------------*/
+struct qe_frame{
+        u8 *data;
+        u32 len;
+        u32 status;
+        u32 info;
+
+        void *privdata;
+        struct list_head node;
+};
+
+/* Frame structure, info field. */
+#define PID_DATA0              0x80000000 /* Data toggle zero */
+#define PID_DATA1              0x40000000 /* Data toggle one  */
+#define PID_SETUP              0x20000000 /* setup bit */
+#define SETUP_STATUS           0x10000000 /* setup status bit */
+#define SETADDR_STATUS         0x08000000 /* setupup address status bit */
+#define NO_REQ                 0x04000000 /* Frame without request */
+#define HOST_DATA              0x02000000 /* Host data frame */
+#define FIRST_PACKET_IN_FRAME  0x01000000 /* first packet in the frame */
+#define TOKEN_FRAME            0x00800000 /* Host token frame */
+#define ZLP                    0x00400000 /* Zero length packet */
+#define IN_TOKEN_FRAME         0x00200000 /* In token package */
+#define OUT_TOKEN_FRAME        0x00100000 /* Out token package */
+#define SETUP_TOKEN_FRAME      0x00080000 /* Setup token package */
+#define STALL_FRAME            0x00040000 /* Stall handshake */
+#define NACK_FRAME             0x00020000 /* Nack handshake */
+#define NO_PID                 0x00010000 /* No send PID */
+#define NO_CRC                 0x00008000 /* No send CRC */
+#define HOST_COMMAND           0x00004000 /* Host command frame   */
+
+/* Frame status field */
+/* Receive side */
+#define FRAME_OK               0x00000000 /* Frame transmitted or received OK */
+#define FRAME_ERROR            0x80000000 /* Error occurred on frame */
+#define START_FRAME_LOST       0x40000000 /* START_FRAME_LOST */
+#define END_FRAME_LOST         0x20000000 /* END_FRAME_LOST */
+#define RX_ER_NONOCT           0x10000000 /* Rx Non Octet Aligned Packet */
+#define RX_ER_BITSTUFF         0x08000000 /* Frame Aborted --Received packet
+                                             with bit stuff error */
+#define RX_ER_CRC              0x04000000 /* Received packet with CRC error */
+#define RX_ER_OVERUN           0x02000000 /* Over-run occurred on reception */
+#define RX_ER_PID              0x01000000 /* Wrong PID received */
+/* Tranmit side */
+#define TX_ER_NAK              0x00800000 /* Received NAK handshake */
+#define TX_ER_STALL            0x00400000 /* Received STALL handshake */
+#define TX_ER_TIMEOUT          0x00200000 /* Transmit time out */
+#define TX_ER_UNDERUN          0x00100000 /* Transmit underrun */
+#define FRAME_INPROGRESS       0x00080000 /* Frame is being transmitted */
+#define ER_DATA_UNDERUN        0x00040000 /* Frame is shorter then expected */
+#define ER_DATA_OVERUN         0x00020000 /* Frame is longer then expected */
+
+/* QE USB frame operation functions */
+#define frame_get_length(frm) (frm->len)
+#define frame_set_length(frm, leng) (frm->len = leng)
+#define frame_get_data(frm) (frm->data)
+#define frame_set_data(frm, dat) (frm->data = dat)
+#define frame_get_info(frm) (frm->info)
+#define frame_set_info(frm, inf) (frm->info = inf)
+#define frame_get_status(frm) (frm->status)
+#define frame_set_status(frm, stat) (frm->status = stat)
+#define frame_get_privdata(frm) (frm->privdata)
+#define frame_set_privdata(frm, dat) (frm->privdata = dat)
+
+static inline void qe_frame_clean(struct qe_frame *frm)
+{
+        frame_set_data(frm, NULL);
+        frame_set_length(frm, 0);
+        frame_set_status(frm, FRAME_OK);
+        frame_set_info(frm, 0);
+        frame_set_privdata(frm, NULL);
+}
+
+static inline void qe_frame_init(struct qe_frame *frm)
+{
+        qe_frame_clean(frm);
+        INIT_LIST_HEAD(&(frm->node));
+}
+
+struct qe_req {
+        struct usb_request req;
+        struct list_head queue;
+        /* ep_queue() func will add
+         a request->queue into a udc_ep->queue 'd tail */
+        struct qe_ep *ep;
+        unsigned mapped:1;
+};
+
+struct qe_ep {
+        struct usb_ep ep;
+        struct list_head queue;
+        struct qe_udc *udc;
+        struct usb_gadget *gadget;
+
+        u8 state;
+
+        struct qe_bd __iomem *rxbase;
+        struct qe_bd __iomem *n_rxbd;
+        struct qe_bd __iomem *e_rxbd;
+
+        struct qe_bd __iomem *txbase;
+        struct qe_bd __iomem *n_txbd;
+        struct qe_bd __iomem *c_txbd;
+
+        struct qe_frame *rxframe;
+        u8 *rxbuffer;
+        dma_addr_t rxbuf_d;
+        u8 rxbufmap;
+        unsigned char localnack;
+        int has_data;
+
+        struct qe_frame *txframe;
+        struct qe_req *tx_req;
+        int sent;  /*data already sent */
+        int last;  /*data sent in the last time*/
+
+        u8 dir;
+        u8 epnum;
+        u8 tm; /* transfer mode */
+        u8 data01;
+        u8 init;
+
+        u8 already_seen;
+        u8 enable_tasklet;
+        u8 setup_stage;
+        u32 last_io;            /* timestamp */
+
+        char name[14];
+
+        unsigned double_buf:1;
+        unsigned stopped:1;
+        unsigned fnf:1;
+        unsigned has_dma:1;
+
+        u8 ackwait;
+        u8 dma_channel;
+        u16 dma_counter;
+        int lch;
+
+        struct timer_list timer;
+};
+
+struct qe_udc {
+        struct usb_gadget gadget;
+        struct usb_gadget_driver *driver;
+        struct device *dev;
+        struct qe_ep eps[USB_MAX_ENDPOINTS];
+        struct usb_ctrlrequest local_setup_buff;
+        spinlock_t lock;        /* lock for set/config qe_udc */
+        unsigned long soc_type;         /* QE or CPM soc */
+
+        struct qe_req *status_req;      /* ep0 status request */
+
+        /* USB and EP Parameter Block pointer */
+        struct usb_device_para __iomem *usb_param;
+        struct usb_ep_para __iomem *ep_param[4];
+
+        u32 max_pipes;          /* Device max pipes */
+        u32 max_use_endpts;     /* Max endpointes to be used */
+        u32 bus_reset;          /* Device is bus reseting */
+        u32 resume_state;       /* USB state to resume*/
+        u32 usb_state;          /* USB current state */
+        u32 usb_next_state;     /* USB next state */
+        u32 ep0_state;          /* Enpoint zero state */
+        u32 ep0_dir;            /* Enpoint zero direction: can be
+                                USB_DIR_IN or USB_DIR_OUT*/
+        u32 usb_sof_count;      /* SOF count */
+        u32 errors;             /* USB ERRORs count */
+
+        u8 *tmpbuf;
+        u32 c_start;
+        u32 c_end;
+
+        u8 *nullbuf;
+        u8 *statusbuf;
+        dma_addr_t nullp;
+        u8 nullmap;
+        u8 device_address;      /* Device USB address */
+
+        unsigned int usb_clock;
+        unsigned int usb_irq;
+        struct usb_ctlr __iomem *usb_regs;
+
+        struct tasklet_struct rx_tasklet;
+
+        struct completion *done;        /* to make sure release() is done */
+};
+
+#define EP_STATE_IDLE   0
+#define EP_STATE_NACK   1
+#define EP_STATE_STALL  2
+
+/*
+ * transmit BD's status
+ */
+#define T_R           0x80000000         /* ready bit */
+#define T_W           0x20000000         /* wrap bit */
+#define T_I           0x10000000         /* interrupt on completion */
+#define T_L           0x08000000         /* last */
+#define T_TC          0x04000000         /* transmit CRC */
+#define T_CNF         0x02000000         /* wait for  transmit confirm */
+#define T_LSP         0x01000000         /* Low-speed transaction */
+#define T_PID         0x00c00000         /* packet id */
+#define T_NAK         0x00100000         /* No ack. */
+#define T_STAL        0x00080000         /* Stall received */
+#define T_TO          0x00040000         /* time out */
+#define T_UN          0x00020000         /* underrun */
+
+#define DEVICE_T_ERROR    (T_UN | T_TO)
+#define HOST_T_ERROR      (T_UN | T_TO | T_NAK | T_STAL)
+#define DEVICE_T_BD_MASK  DEVICE_T_ERROR
+#define HOST_T_BD_MASK    HOST_T_ERROR
+
+#define T_PID_SHIFT   6
+#define T_PID_DATA0   0x00800000         /* Data 0 toggle */
+#define T_PID_DATA1   0x00c00000         /* Data 1 toggle */
+
+/*
+ * receive BD's status
+ */
+#define R_E           0x80000000         /* buffer empty */
+#define R_W           0x20000000         /* wrap bit */
+#define R_I           0x10000000         /* interrupt on reception */
+#define R_L           0x08000000         /* last */
+#define R_F           0x04000000         /* first */
+#define R_PID         0x00c00000         /* packet id */
+#define R_NO          0x00100000         /* Rx Non Octet Aligned Packet */
+#define R_AB          0x00080000         /* Frame Aborted */
+#define R_CR          0x00040000         /* CRC Error */
+#define R_OV          0x00020000         /* Overrun */
+
+#define R_ERROR       (R_NO | R_AB | R_CR | R_OV)
+#define R_BD_MASK     R_ERROR
+
+#define R_PID_DATA0   0x00000000
+#define R_PID_DATA1   0x00400000
+#define R_PID_SETUP   0x00800000
+
+#define CPM_USB_STOP_TX 0x2e600000
+#define CPM_USB_RESTART_TX 0x2e600000
+#define CPM_USB_STOP_TX_OPCODE 0x0a
+#define CPM_USB_RESTART_TX_OPCODE 0x0b
+#define CPM_USB_EP_SHIFT 5
+
+#endif  /* __FSL_QE_UDC_H */