sys/bus/u4b/controller/uhci.h

   1 /* $FreeBSD: head/sys/dev/usb/controller/uhci.h 228483 2011-12-14 00:28:54Z hselasky $ */
   2 /*-
   3  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software contributed to The NetBSD Foundation
   7  * by Lennart Augustsson (lennart@augustsson.net) at
   8  * Carlstedt Research & Technology.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _UHCI_H_
  33 #define _UHCI_H_
  34
  35 #define UHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128)
  36
  37 #define UHCI_FRAMELIST_COUNT    1024    /* units */
  38 #define UHCI_FRAMELIST_ALIGN    4096    /* bytes */
  39
  40 /* Structures alignment (bytes) */
  41 #define UHCI_TD_ALIGN           16
  42 #define UHCI_QH_ALIGN           16
  43
  44 #if     ((USB_PAGE_SIZE < UHCI_TD_ALIGN) || (UHCI_TD_ALIGN == 0) ||     \
  45         (USB_PAGE_SIZE < UHCI_QH_ALIGN) || (UHCI_QH_ALIGN == 0))
  46 #error  "Invalid USB page size!"
  47 #endif
  48
  49 typedef uint32_t uhci_physaddr_t;
  50
  51 #define UHCI_PTR_T              0x00000001
  52 #define UHCI_PTR_TD             0x00000000
  53 #define UHCI_PTR_QH             0x00000002
  54 #define UHCI_PTR_VF             0x00000004
  55
  56 /*
  57  * The Queue Heads (QH) and Transfer Descriptors (TD) are accessed by
  58  * both the CPU and the USB-controller which run concurrently. Great
  59  * care must be taken. When the data-structures are linked into the
  60  * USB controller's frame list, the USB-controller "owns" the
  61  * td_status and qh_elink fields, which will not be written by the
  62  * CPU.
  63  *
  64  */
  65
  66 struct uhci_td {
  67 /*
  68  * Data used by the UHCI controller.
  69  * volatile is used in order to mantain struct members ordering.
  70  */
  71         volatile uint32_t td_next;
  72         volatile uint32_t td_status;
  73 #define UHCI_TD_GET_ACTLEN(s)   (((s) + 1) & 0x3ff)
  74 #define UHCI_TD_ZERO_ACTLEN(t)  ((t) | 0x3ff)
  75 #define UHCI_TD_BITSTUFF        0x00020000
  76 #define UHCI_TD_CRCTO           0x00040000
  77 #define UHCI_TD_NAK             0x00080000
  78 #define UHCI_TD_BABBLE          0x00100000
  79 #define UHCI_TD_DBUFFER         0x00200000
  80 #define UHCI_TD_STALLED         0x00400000
  81 #define UHCI_TD_ACTIVE          0x00800000
  82 #define UHCI_TD_IOC             0x01000000
  83 #define UHCI_TD_IOS             0x02000000
  84 #define UHCI_TD_LS              0x04000000
  85 #define UHCI_TD_GET_ERRCNT(s)   (((s) >> 27) & 3)
  86 #define UHCI_TD_SET_ERRCNT(n)   ((n) << 27)
  87 #define UHCI_TD_SPD             0x20000000
  88         volatile uint32_t td_token;
  89 #define UHCI_TD_PID             0x000000ff
  90 #define UHCI_TD_PID_IN          0x00000069
  91 #define UHCI_TD_PID_OUT         0x000000e1
  92 #define UHCI_TD_PID_SETUP       0x0000002d
  93 #define UHCI_TD_GET_PID(s)      ((s) & 0xff)
  94 #define UHCI_TD_SET_DEVADDR(a)  ((a) << 8)
  95 #define UHCI_TD_GET_DEVADDR(s)  (((s) >> 8) & 0x7f)
  96 #define UHCI_TD_SET_ENDPT(e)    (((e) & 0xf) << 15)
  97 #define UHCI_TD_GET_ENDPT(s)    (((s) >> 15) & 0xf)
  98 #define UHCI_TD_SET_DT(t)       ((t) << 19)
  99 #define UHCI_TD_GET_DT(s)       (((s) >> 19) & 1)
 100 #define UHCI_TD_SET_MAXLEN(l)   (((l)-1) << 21)
 101 #define UHCI_TD_GET_MAXLEN(s)   ((((s) >> 21) + 1) & 0x7ff)
 102 #define UHCI_TD_MAXLEN_MASK     0xffe00000
 103         volatile uint32_t td_buffer;
 104 /*
 105  * Extra information needed:
 106  */
 107         struct uhci_td *next;
 108         struct uhci_td *prev;
 109         struct uhci_td *obj_next;
 110         struct usb_page_cache *page_cache;
 111         struct usb_page_cache *fix_pc;
 112         uint32_t td_self;
 113         uint16_t len;
 114 } __aligned(UHCI_TD_ALIGN);
 115
 116 typedef struct uhci_td uhci_td_t;
 117
 118 #define UHCI_TD_ERROR   (UHCI_TD_BITSTUFF | UHCI_TD_CRCTO |             \
 119                         UHCI_TD_BABBLE | UHCI_TD_DBUFFER | UHCI_TD_STALLED)
 120
 121 #define UHCI_TD_SETUP(len, endp, dev)   (UHCI_TD_SET_MAXLEN(len) |      \
 122                                         UHCI_TD_SET_ENDPT(endp) |       \
 123                                         UHCI_TD_SET_DEVADDR(dev) |      \
 124                                         UHCI_TD_PID_SETUP)
 125
 126 #define UHCI_TD_OUT(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) |      \
 127                                         UHCI_TD_SET_ENDPT(endp) |       \
 128                                         UHCI_TD_SET_DEVADDR(dev) |      \
 129                                         UHCI_TD_PID_OUT | UHCI_TD_SET_DT(dt))
 130
 131 #define UHCI_TD_IN(len, endp, dev, dt)  (UHCI_TD_SET_MAXLEN(len) |      \
 132                                         UHCI_TD_SET_ENDPT(endp) |       \
 133                                         UHCI_TD_SET_DEVADDR(dev) |      \
 134                                         UHCI_TD_PID_IN | UHCI_TD_SET_DT(dt))
 135
 136 struct uhci_qh {
 137 /*
 138  * Data used by the UHCI controller.
 139  */
 140         volatile uint32_t qh_h_next;
 141         volatile uint32_t qh_e_next;
 142 /*
 143  * Extra information needed:
 144  */
 145         struct uhci_qh *h_next;
 146         struct uhci_qh *h_prev;
 147         struct uhci_qh *obj_next;
 148         struct uhci_td *e_next;
 149         struct usb_page_cache *page_cache;
 150         uint32_t qh_self;
 151         uint16_t intr_pos;
 152 } __aligned(UHCI_QH_ALIGN);
 153
 154 typedef struct uhci_qh uhci_qh_t;
 155
 156 /* Maximum number of isochronous TD's and QH's interrupt */
 157 #define UHCI_VFRAMELIST_COUNT   128
 158 #define UHCI_IFRAMELIST_COUNT   (2 * UHCI_VFRAMELIST_COUNT)
 159
 160 #if     (((UHCI_VFRAMELIST_COUNT & (UHCI_VFRAMELIST_COUNT-1)) != 0) ||  \
 161         (UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT))
 162 #error  "UHCI_VFRAMELIST_COUNT is not power of two"
 163 #error  "or UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT"
 164 #endif
 165
 166 #if (UHCI_VFRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER)
 167 #error "maximum number of full-speed isochronous frames is higher than supported!"
 168 #endif
 169
 170 struct uhci_config_desc {
 171         struct usb_config_descriptor confd;
 172         struct usb_interface_descriptor ifcd;
 173         struct usb_endpoint_descriptor endpd;
 174 } __packed;
 175
 176 union uhci_hub_desc {
 177         struct usb_status stat;
 178         struct usb_port_status ps;
 179         uint8_t temp[128];
 180 };
 181
 182 struct uhci_hw_softc {
 183         struct usb_page_cache pframes_pc;
 184         struct usb_page_cache isoc_start_pc[UHCI_VFRAMELIST_COUNT];
 185         struct usb_page_cache intr_start_pc[UHCI_IFRAMELIST_COUNT];
 186         struct usb_page_cache ls_ctl_start_pc;
 187         struct usb_page_cache fs_ctl_start_pc;
 188         struct usb_page_cache bulk_start_pc;
 189         struct usb_page_cache last_qh_pc;
 190         struct usb_page_cache last_td_pc;
 191
 192         struct usb_page pframes_pg;
 193         struct usb_page isoc_start_pg[UHCI_VFRAMELIST_COUNT];
 194         struct usb_page intr_start_pg[UHCI_IFRAMELIST_COUNT];
 195         struct usb_page ls_ctl_start_pg;
 196         struct usb_page fs_ctl_start_pg;
 197         struct usb_page bulk_start_pg;
 198         struct usb_page last_qh_pg;
 199         struct usb_page last_td_pg;
 200 };
 201
 202 typedef struct uhci_softc {
 203         struct uhci_hw_softc sc_hw;
 204         struct usb_bus sc_bus;          /* base device */
 205         union uhci_hub_desc sc_hub_desc;
 206         struct usb_callout sc_root_intr;
 207
 208         struct usb_device *sc_devices[UHCI_MAX_DEVICES];
 209         /* pointer to last TD for isochronous */
 210         struct uhci_td *sc_isoc_p_last[UHCI_VFRAMELIST_COUNT];
 211         /* pointer to last QH for interrupt */
 212         struct uhci_qh *sc_intr_p_last[UHCI_IFRAMELIST_COUNT];
 213         /* pointer to last QH for low speed control */
 214         struct uhci_qh *sc_ls_ctl_p_last;
 215         /* pointer to last QH for full speed control */
 216         struct uhci_qh *sc_fs_ctl_p_last;
 217         /* pointer to last QH for bulk */
 218         struct uhci_qh *sc_bulk_p_last;
 219         struct uhci_qh *sc_reclaim_qh_p;
 220         struct uhci_qh *sc_last_qh_p;
 221         struct uhci_td *sc_last_td_p;
 222         struct resource *sc_io_res;
 223         struct resource *sc_irq_res;
 224         void   *sc_intr_hdl;
 225         device_t sc_dev;
 226         bus_size_t sc_io_size;
 227         bus_space_tag_t sc_io_tag;
 228         bus_space_handle_t sc_io_hdl;
 229
 230         uint32_t sc_loops;              /* number of QHs that wants looping */
 231
 232         uint16_t sc_intr_stat[UHCI_IFRAMELIST_COUNT];
 233
 234         uint8_t sc_addr;                /* device address */
 235         uint8_t sc_conf;                /* device configuration */
 236         uint8_t sc_isreset;             /* bits set if a root hub is reset */
 237         uint8_t sc_isresumed;           /* bits set if a port was resumed */
 238         uint8_t sc_hub_idata[1];
 239
 240         char    sc_vendor[16];          /* vendor string for root hub */
 241 } uhci_softc_t;
 242
 243 usb_bus_mem_cb_t uhci_iterate_hw_softc;
 244
 245 usb_error_t uhci_init(uhci_softc_t *sc);
 246 void    uhci_reset(uhci_softc_t *sc);
 247 void    uhci_interrupt(uhci_softc_t *sc);
 248
 249 #endif                                  /* _UHCI_H_ */