include/linux/usb/ehci_def.h

   1 /*
   2  * Copyright (c) 2001-2002 by David Brownell
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of the GNU General Public License as published by the
   6  * Free Software Foundation; either version 2 of the License, or (at your
   7  * option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  11  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #ifndef __LINUX_USB_EHCI_DEF_H
  20 #define __LINUX_USB_EHCI_DEF_H
  21
  22 /* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
  23
  24 /* Section 2.2 Host Controller Capability Registers */
  25 struct ehci_caps {
  26         /* these fields are specified as 8 and 16 bit registers,
  27          * but some hosts can't perform 8 or 16 bit PCI accesses.
  28          */
  29         u32             hc_capbase;
  30 #define HC_LENGTH(p)            (((p)>>00)&0x00ff)      /* bits 7:0 */
  31 #define HC_VERSION(p)           (((p)>>16)&0xffff)      /* bits 31:16 */
  32         u32             hcs_params;     /* HCSPARAMS - offset 0x4 */
  33 #define HCS_DEBUG_PORT(p)       (((p)>>20)&0xf) /* bits 23:20, debug port? */
  34 #define HCS_INDICATOR(p)        ((p)&(1 << 16)) /* true: has port indicators */
  35 #define HCS_N_CC(p)             (((p)>>12)&0xf) /* bits 15:12, #companion HCs */
  36 #define HCS_N_PCC(p)            (((p)>>8)&0xf)  /* bits 11:8, ports per CC */
  37 #define HCS_PORTROUTED(p)       ((p)&(1 << 7))  /* true: port routing */
  38 #define HCS_PPC(p)              ((p)&(1 << 4))  /* true: port power control */
  39 #define HCS_N_PORTS(p)          (((p)>>0)&0xf)  /* bits 3:0, ports on HC */
  40
  41         u32             hcc_params;      /* HCCPARAMS - offset 0x8 */
  42 #define HCC_EXT_CAPS(p)         (((p)>>8)&0xff) /* for pci extended caps */
  43 #define HCC_ISOC_CACHE(p)       ((p)&(1 << 7))  /* true: can cache isoc frame */
  44 #define HCC_ISOC_THRES(p)       (((p)>>4)&0x7)  /* bits 6:4, uframes cached */
  45 #define HCC_CANPARK(p)          ((p)&(1 << 2))  /* true: can park on async qh */
  46 #define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1))  /* true: periodic_size changes*/
  47 #define HCC_64BIT_ADDR(p)       ((p)&(1))       /* true: can use 64-bit addr */
  48         u8              portroute [8];   /* nibbles for routing - offset 0xC */
  49 } __attribute__ ((packed));
  50
  51
  52 /* Section 2.3 Host Controller Operational Registers */
  53 struct ehci_regs {
  54
  55         /* USBCMD: offset 0x00 */
  56         u32             command;
  57 /* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
  58 #define CMD_PARK        (1<<11)         /* enable "park" on async qh */
  59 #define CMD_PARK_CNT(c) (((c)>>8)&3)    /* how many transfers to park for */
  60 #define CMD_LRESET      (1<<7)          /* partial reset (no ports, etc) */
  61 #define CMD_IAAD        (1<<6)          /* "doorbell" interrupt async advance */
  62 #define CMD_ASE         (1<<5)          /* async schedule enable */
  63 #define CMD_PSE         (1<<4)          /* periodic schedule enable */
  64 /* 3:2 is periodic frame list size */
  65 #define CMD_RESET       (1<<1)          /* reset HC not bus */
  66 #define CMD_RUN         (1<<0)          /* start/stop HC */
  67
  68         /* USBSTS: offset 0x04 */
  69         u32             status;
  70 #define STS_ASS         (1<<15)         /* Async Schedule Status */
  71 #define STS_PSS         (1<<14)         /* Periodic Schedule Status */
  72 #define STS_RECL        (1<<13)         /* Reclamation */
  73 #define STS_HALT        (1<<12)         /* Not running (any reason) */
  74 /* some bits reserved */
  75         /* these STS_* flags are also intr_enable bits (USBINTR) */
  76 #define STS_IAA         (1<<5)          /* Interrupted on async advance */
  77 #define STS_FATAL       (1<<4)          /* such as some PCI access errors */
  78 #define STS_FLR         (1<<3)          /* frame list rolled over */
  79 #define STS_PCD         (1<<2)          /* port change detect */
  80 #define STS_ERR         (1<<1)          /* "error" completion (overflow, ...) */
  81 #define STS_INT         (1<<0)          /* "normal" completion (short, ...) */
  82
  83         /* USBINTR: offset 0x08 */
  84         u32             intr_enable;
  85
  86         /* FRINDEX: offset 0x0C */
  87         u32             frame_index;    /* current microframe number */
  88         /* CTRLDSSEGMENT: offset 0x10 */
  89         u32             segment;        /* address bits 63:32 if needed */
  90         /* PERIODICLISTBASE: offset 0x14 */
  91         u32             frame_list;     /* points to periodic list */
  92         /* ASYNCLISTADDR: offset 0x18 */
  93         u32             async_next;     /* address of next async queue head */
  94
  95         u32             reserved [9];
  96
  97         /* CONFIGFLAG: offset 0x40 */
  98         u32             configured_flag;
  99 #define FLAG_CF         (1<<0)          /* true: we'll support "high speed" */
 100
 101         /* PORTSC: offset 0x44 */
 102         u32             port_status [0];        /* up to N_PORTS */
 103 /* 31:23 reserved */
 104 #define PORT_WKOC_E     (1<<22)         /* wake on overcurrent (enable) */
 105 #define PORT_WKDISC_E   (1<<21)         /* wake on disconnect (enable) */
 106 #define PORT_WKCONN_E   (1<<20)         /* wake on connect (enable) */
 107 /* 19:16 for port testing */
 108 #define PORT_TEST_PKT   (0x4<<16)       /* Port Test Control - packet test */
 109 #define PORT_LED_OFF    (0<<14)
 110 #define PORT_LED_AMBER  (1<<14)
 111 #define PORT_LED_GREEN  (2<<14)
 112 #define PORT_LED_MASK   (3<<14)
 113 #define PORT_OWNER      (1<<13)         /* true: companion hc owns this port */
 114 #define PORT_POWER      (1<<12)         /* true: has power (see PPC) */
 115 #define PORT_USB11(x) (((x)&(3<<10)) == (1<<10))        /* USB 1.1 device */
 116 /* 11:10 for detecting lowspeed devices (reset vs release ownership) */
 117 /* 9 reserved */
 118 #define PORT_RESET      (1<<8)          /* reset port */
 119 #define PORT_SUSPEND    (1<<7)          /* suspend port */
 120 #define PORT_RESUME     (1<<6)          /* resume it */
 121 #define PORT_OCC        (1<<5)          /* over current change */
 122 #define PORT_OC         (1<<4)          /* over current active */
 123 #define PORT_PEC        (1<<3)          /* port enable change */
 124 #define PORT_PE         (1<<2)          /* port enable */
 125 #define PORT_CSC        (1<<1)          /* connect status change */
 126 #define PORT_CONNECT    (1<<0)          /* device connected */
 127 #define PORT_RWC_BITS   (PORT_CSC | PORT_PEC | PORT_OCC)
 128 } __attribute__ ((packed));
 129
 130 #define USBMODE         0x68            /* USB Device mode */
 131 #define USBMODE_SDIS    (1<<3)          /* Stream disable */
 132 #define USBMODE_BE      (1<<2)          /* BE/LE endianness select */
 133 #define USBMODE_CM_HC   (3<<0)          /* host controller mode */
 134 #define USBMODE_CM_IDLE (0<<0)          /* idle state */
 135
 136 /* Moorestown has some non-standard registers, partially due to the fact that
 137  * its EHCI controller has both TT and LPM support. HOSTPCx are extentions to
 138  * PORTSCx
 139  */
 140 #define HOSTPC0         0x84            /* HOSTPC extension */
 141 #define HOSTPC_PHCD     (1<<22)         /* Phy clock disable */
 142 #define HOSTPC_PSPD     (3<<25)         /* Port speed detection */
 143 #define USBMODE_EX      0xc8            /* USB Device mode extension */
 144 #define USBMODE_EX_VBPS (1<<5)          /* VBus Power Select On */
 145 #define USBMODE_EX_HC   (3<<0)          /* host controller mode */
 146 #define TXFILLTUNING    0x24            /* TX FIFO Tuning register */
 147 #define TXFIFO_DEFAULT  (8<<16)         /* FIFO burst threshold 8 */
 148
 149 /* Appendix C, Debug port ... intended for use with special "debug devices"
 150  * that can help if there's no serial console.  (nonstandard enumeration.)
 151  */
 152 struct ehci_dbg_port {
 153         u32     control;
 154 #define DBGP_OWNER      (1<<30)
 155 #define DBGP_ENABLED    (1<<28)
 156 #define DBGP_DONE       (1<<16)
 157 #define DBGP_INUSE      (1<<10)
 158 #define DBGP_ERRCODE(x) (((x)>>7)&0x07)
 159 #       define DBGP_ERR_BAD     1
 160 #       define DBGP_ERR_SIGNAL  2
 161 #define DBGP_ERROR      (1<<6)
 162 #define DBGP_GO         (1<<5)
 163 #define DBGP_OUT        (1<<4)
 164 #define DBGP_LEN(x)     (((x)>>0)&0x0f)
 165         u32     pids;
 166 #define DBGP_PID_GET(x)         (((x)>>16)&0xff)
 167 #define DBGP_PID_SET(data, tok) (((data)<<8)|(tok))
 168         u32     data03;
 169         u32     data47;
 170         u32     address;
 171 #define DBGP_EPADDR(dev, ep)    (((dev)<<8)|(ep))
 172 } __attribute__ ((packed));
 173
 174 #ifdef CONFIG_EARLY_PRINTK_DBGP
 175 #include <linux/init.h>
 176 extern int __init early_dbgp_init(char *s);
 177 extern struct console early_dbgp_console;
 178 #endif /* CONFIG_EARLY_PRINTK_DBGP */
 179
 180 #ifdef CONFIG_EARLY_PRINTK_DBGP
 181 /* Call backs from ehci host driver to ehci debug driver */
 182 extern int dbgp_external_startup(void);
 183 extern int dbgp_reset_prep(void);
 184 #else
 185 static inline int dbgp_reset_prep(void)
 186 {
 187         return 1;
 188 }
 189 static inline int dbgp_external_startup(void)
 190 {
 191         return -1;
 192 }
 193 #endif
 194
 195 #endif /* __LINUX_USB_EHCI_DEF_H */