1 /* $FreeBSD$ */ 2 /*- 3 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 4 * 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart@augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _UHCI_H_ 35 #define _UHCI_H_ 36 37 #define UHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128) 38 39 #define UHCI_FRAMELIST_COUNT 1024 /* units */ 40 #define UHCI_FRAMELIST_ALIGN 4096 /* bytes */ 41 42 /* Structures alignment (bytes) */ 43 #define UHCI_TD_ALIGN 16 44 #define UHCI_QH_ALIGN 16 45 46 #if ((USB_PAGE_SIZE < UHCI_TD_ALIGN) || (UHCI_TD_ALIGN == 0) || \ 47 (USB_PAGE_SIZE < UHCI_QH_ALIGN) || (UHCI_QH_ALIGN == 0)) 48 #error "Invalid USB page size!" 49 #endif 50 51 typedef uint32_t uhci_physaddr_t; 52 53 #define UHCI_PTR_T 0x00000001 54 #define UHCI_PTR_TD 0x00000000 55 #define UHCI_PTR_QH 0x00000002 56 #define UHCI_PTR_VF 0x00000004 57 58 /* 59 * The Queue Heads (QH) and Transfer Descriptors (TD) are accessed by 60 * both the CPU and the USB-controller which run concurrently. Great 61 * care must be taken. When the data-structures are linked into the 62 * USB controller's frame list, the USB-controller "owns" the 63 * td_status and qh_elink fields, which will not be written by the 64 * CPU. 65 * 66 */ 67 68 struct uhci_td { 69 /* 70 * Data used by the UHCI controller. 71 * volatile is used in order to mantain struct members ordering. 72 */ 73 volatile uint32_t td_next; 74 volatile uint32_t td_status; 75 #define UHCI_TD_GET_ACTLEN(s) (((s) + 1) & 0x3ff) 76 #define UHCI_TD_ZERO_ACTLEN(t) ((t) | 0x3ff) 77 #define UHCI_TD_BITSTUFF 0x00020000 78 #define UHCI_TD_CRCTO 0x00040000 79 #define UHCI_TD_NAK 0x00080000 80 #define UHCI_TD_BABBLE 0x00100000 81 #define UHCI_TD_DBUFFER 0x00200000 82 #define UHCI_TD_STALLED 0x00400000 83 #define UHCI_TD_ACTIVE 0x00800000 84 #define UHCI_TD_IOC 0x01000000 85 #define UHCI_TD_IOS 0x02000000 86 #define UHCI_TD_LS 0x04000000 87 #define UHCI_TD_GET_ERRCNT(s) (((s) >> 27) & 3) 88 #define UHCI_TD_SET_ERRCNT(n) ((n) << 27) 89 #define UHCI_TD_SPD 0x20000000 90 volatile uint32_t td_token; 91 #define UHCI_TD_PID 0x000000ff 92 #define UHCI_TD_PID_IN 0x00000069 93 #define UHCI_TD_PID_OUT 0x000000e1 94 #define UHCI_TD_PID_SETUP 0x0000002d 95 #define UHCI_TD_GET_PID(s) ((s) & 0xff) 96 #define UHCI_TD_SET_DEVADDR(a) ((a) << 8) 97 #define UHCI_TD_GET_DEVADDR(s) (((s) >> 8) & 0x7f) 98 #define UHCI_TD_SET_ENDPT(e) (((e) & 0xf) << 15) 99 #define UHCI_TD_GET_ENDPT(s) (((s) >> 15) & 0xf) 100 #define UHCI_TD_SET_DT(t) ((t) << 19) 101 #define UHCI_TD_GET_DT(s) (((s) >> 19) & 1) 102 #define UHCI_TD_SET_MAXLEN(l) (((l)-1U) << 21) 103 #define UHCI_TD_GET_MAXLEN(s) ((((s) >> 21) + 1) & 0x7ff) 104 #define UHCI_TD_MAXLEN_MASK 0xffe00000 105 volatile uint32_t td_buffer; 106 /* 107 * Extra information needed: 108 */ 109 struct uhci_td *next; 110 struct uhci_td *prev; 111 struct uhci_td *obj_next; 112 struct usb_page_cache *page_cache; 113 struct usb_page_cache *fix_pc; 114 uint32_t td_self; 115 uint16_t len; 116 } __aligned(UHCI_TD_ALIGN); 117 118 typedef struct uhci_td uhci_td_t; 119 120 #define UHCI_TD_ERROR (UHCI_TD_BITSTUFF | UHCI_TD_CRCTO | \ 121 UHCI_TD_BABBLE | UHCI_TD_DBUFFER | UHCI_TD_STALLED) 122 123 #define UHCI_TD_SETUP(len, endp, dev) (UHCI_TD_SET_MAXLEN(len) | \ 124 UHCI_TD_SET_ENDPT(endp) | \ 125 UHCI_TD_SET_DEVADDR(dev) | \ 126 UHCI_TD_PID_SETUP) 127 128 #define UHCI_TD_OUT(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \ 129 UHCI_TD_SET_ENDPT(endp) | \ 130 UHCI_TD_SET_DEVADDR(dev) | \ 131 UHCI_TD_PID_OUT | UHCI_TD_SET_DT(dt)) 132 133 #define UHCI_TD_IN(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \ 134 UHCI_TD_SET_ENDPT(endp) | \ 135 UHCI_TD_SET_DEVADDR(dev) | \ 136 UHCI_TD_PID_IN | UHCI_TD_SET_DT(dt)) 137 138 struct uhci_qh { 139 /* 140 * Data used by the UHCI controller. 141 */ 142 volatile uint32_t qh_h_next; 143 volatile uint32_t qh_e_next; 144 /* 145 * Extra information needed: 146 */ 147 struct uhci_qh *h_next; 148 struct uhci_qh *h_prev; 149 struct uhci_qh *obj_next; 150 struct uhci_td *e_next; 151 struct usb_page_cache *page_cache; 152 uint32_t qh_self; 153 uint16_t intr_pos; 154 } __aligned(UHCI_QH_ALIGN); 155 156 typedef struct uhci_qh uhci_qh_t; 157 158 /* Maximum number of isochronous TD's and QH's interrupt */ 159 #define UHCI_VFRAMELIST_COUNT 128 160 #define UHCI_IFRAMELIST_COUNT (2 * UHCI_VFRAMELIST_COUNT) 161 162 #if (((UHCI_VFRAMELIST_COUNT & (UHCI_VFRAMELIST_COUNT-1)) != 0) || \ 163 (UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT)) 164 #error "UHCI_VFRAMELIST_COUNT is not power of two" 165 #error "or UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT" 166 #endif 167 168 #if (UHCI_VFRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER) 169 #error "maximum number of full-speed isochronous frames is higher than supported!" 170 #endif 171 172 struct uhci_config_desc { 173 struct usb_config_descriptor confd; 174 struct usb_interface_descriptor ifcd; 175 struct usb_endpoint_descriptor endpd; 176 } __packed; 177 178 union uhci_hub_desc { 179 struct usb_status stat; 180 struct usb_port_status ps; 181 uint8_t temp[128]; 182 }; 183 184 struct uhci_hw_softc { 185 struct usb_page_cache pframes_pc; 186 struct usb_page_cache isoc_start_pc[UHCI_VFRAMELIST_COUNT]; 187 struct usb_page_cache intr_start_pc[UHCI_IFRAMELIST_COUNT]; 188 struct usb_page_cache ls_ctl_start_pc; 189 struct usb_page_cache fs_ctl_start_pc; 190 struct usb_page_cache bulk_start_pc; 191 struct usb_page_cache last_qh_pc; 192 struct usb_page_cache last_td_pc; 193 194 struct usb_page pframes_pg; 195 struct usb_page isoc_start_pg[UHCI_VFRAMELIST_COUNT]; 196 struct usb_page intr_start_pg[UHCI_IFRAMELIST_COUNT]; 197 struct usb_page ls_ctl_start_pg; 198 struct usb_page fs_ctl_start_pg; 199 struct usb_page bulk_start_pg; 200 struct usb_page last_qh_pg; 201 struct usb_page last_td_pg; 202 }; 203 204 typedef struct uhci_softc { 205 struct uhci_hw_softc sc_hw; 206 struct usb_bus sc_bus; /* base device */ 207 union uhci_hub_desc sc_hub_desc; 208 struct usb_callout sc_root_intr; 209 210 struct usb_device *sc_devices[UHCI_MAX_DEVICES]; 211 /* pointer to last TD for isochronous */ 212 struct uhci_td *sc_isoc_p_last[UHCI_VFRAMELIST_COUNT]; 213 /* pointer to last QH for interrupt */ 214 struct uhci_qh *sc_intr_p_last[UHCI_IFRAMELIST_COUNT]; 215 /* pointer to last QH for low speed control */ 216 struct uhci_qh *sc_ls_ctl_p_last; 217 /* pointer to last QH for full speed control */ 218 struct uhci_qh *sc_fs_ctl_p_last; 219 /* pointer to last QH for bulk */ 220 struct uhci_qh *sc_bulk_p_last; 221 struct uhci_qh *sc_reclaim_qh_p; 222 struct uhci_qh *sc_last_qh_p; 223 struct uhci_td *sc_last_td_p; 224 struct resource *sc_io_res; 225 struct resource *sc_irq_res; 226 void *sc_intr_hdl; 227 device_t sc_dev; 228 bus_size_t sc_io_size; 229 bus_space_tag_t sc_io_tag; 230 bus_space_handle_t sc_io_hdl; 231 232 uint32_t sc_loops; /* number of QHs that wants looping */ 233 234 uint16_t sc_intr_stat[UHCI_IFRAMELIST_COUNT]; 235 236 uint8_t sc_addr; /* device address */ 237 uint8_t sc_conf; /* device configuration */ 238 uint8_t sc_isreset; /* bits set if a root hub is reset */ 239 uint8_t sc_isresumed; /* bits set if a port was resumed */ 240 uint8_t sc_hub_idata[1]; 241 242 char sc_vendor[16]; /* vendor string for root hub */ 243 } uhci_softc_t; 244 245 usb_bus_mem_cb_t uhci_iterate_hw_softc; 246 247 usb_error_t uhci_init(uhci_softc_t *sc); 248 void uhci_reset(uhci_softc_t *sc); 249 void uhci_interrupt(uhci_softc_t *sc); 250 251 #endif /* _UHCI_H_ */ 252