3 * Copyright (c) 1998 The NetBSD Foundation, Inc.
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Lennart Augustsson (lennart@augustsson.net) at
8 * Carlstedt Research & Technology.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
42 #define UHCI_MAX_DEVICES MIN(USB_MAX_DEVICES, 128)
44 #define UHCI_FRAMELIST_COUNT 1024 /* units */
45 #define UHCI_FRAMELIST_ALIGN 4096 /* bytes */
47 /* Structures alignment (bytes) */
48 #define UHCI_TD_ALIGN 16
49 #define UHCI_QH_ALIGN 16
51 #if ((USB_PAGE_SIZE < UHCI_TD_ALIGN) || (UHCI_TD_ALIGN == 0) || \
52 (USB_PAGE_SIZE < UHCI_QH_ALIGN) || (UHCI_QH_ALIGN == 0))
53 #error "Invalid USB page size!"
56 typedef uint32_t uhci_physaddr_t;
58 #define UHCI_PTR_T 0x00000001
59 #define UHCI_PTR_TD 0x00000000
60 #define UHCI_PTR_QH 0x00000002
61 #define UHCI_PTR_VF 0x00000004
64 * The Queue Heads (QH) and Transfer Descriptors (TD) are accessed by
65 * both the CPU and the USB-controller which run concurrently. Great
66 * care must be taken. When the data-structures are linked into the
67 * USB controller's frame list, the USB-controller "owns" the
68 * td_status and qh_elink fields, which will not be written by the
75 * Data used by the UHCI controller.
76 * volatile is used in order to mantain struct members ordering.
78 volatile uint32_t td_next;
79 volatile uint32_t td_status;
80 #define UHCI_TD_GET_ACTLEN(s) (((s) + 1) & 0x3ff)
81 #define UHCI_TD_ZERO_ACTLEN(t) ((t) | 0x3ff)
82 #define UHCI_TD_BITSTUFF 0x00020000
83 #define UHCI_TD_CRCTO 0x00040000
84 #define UHCI_TD_NAK 0x00080000
85 #define UHCI_TD_BABBLE 0x00100000
86 #define UHCI_TD_DBUFFER 0x00200000
87 #define UHCI_TD_STALLED 0x00400000
88 #define UHCI_TD_ACTIVE 0x00800000
89 #define UHCI_TD_IOC 0x01000000
90 #define UHCI_TD_IOS 0x02000000
91 #define UHCI_TD_LS 0x04000000
92 #define UHCI_TD_GET_ERRCNT(s) (((s) >> 27) & 3)
93 #define UHCI_TD_SET_ERRCNT(n) ((n) << 27)
94 #define UHCI_TD_SPD 0x20000000
95 volatile uint32_t td_token;
96 #define UHCI_TD_PID 0x000000ff
97 #define UHCI_TD_PID_IN 0x00000069
98 #define UHCI_TD_PID_OUT 0x000000e1
99 #define UHCI_TD_PID_SETUP 0x0000002d
100 #define UHCI_TD_GET_PID(s) ((s) & 0xff)
101 #define UHCI_TD_SET_DEVADDR(a) ((a) << 8)
102 #define UHCI_TD_GET_DEVADDR(s) (((s) >> 8) & 0x7f)
103 #define UHCI_TD_SET_ENDPT(e) (((e) & 0xf) << 15)
104 #define UHCI_TD_GET_ENDPT(s) (((s) >> 15) & 0xf)
105 #define UHCI_TD_SET_DT(t) ((t) << 19)
106 #define UHCI_TD_GET_DT(s) (((s) >> 19) & 1)
107 #define UHCI_TD_SET_MAXLEN(l) (((l)-1) << 21)
108 #define UHCI_TD_GET_MAXLEN(s) ((((s) >> 21) + 1) & 0x7ff)
109 #define UHCI_TD_MAXLEN_MASK 0xffe00000
110 volatile uint32_t td_buffer;
112 * Extra information needed:
114 struct uhci_td *next;
115 struct uhci_td *prev;
116 struct uhci_td *obj_next;
117 struct usb_page_cache *page_cache;
118 struct usb_page_cache *fix_pc;
121 } __aligned(UHCI_TD_ALIGN);
123 typedef struct uhci_td uhci_td_t;
125 #define UHCI_TD_ERROR (UHCI_TD_BITSTUFF | UHCI_TD_CRCTO | \
126 UHCI_TD_BABBLE | UHCI_TD_DBUFFER | UHCI_TD_STALLED)
128 #define UHCI_TD_SETUP(len, endp, dev) (UHCI_TD_SET_MAXLEN(len) | \
129 UHCI_TD_SET_ENDPT(endp) | \
130 UHCI_TD_SET_DEVADDR(dev) | \
133 #define UHCI_TD_OUT(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_OUT | UHCI_TD_SET_DT(dt))
138 #define UHCI_TD_IN(len, endp, dev, dt) (UHCI_TD_SET_MAXLEN(len) | \
139 UHCI_TD_SET_ENDPT(endp) | \
140 UHCI_TD_SET_DEVADDR(dev) | \
141 UHCI_TD_PID_IN | UHCI_TD_SET_DT(dt))
145 * Data used by the UHCI controller.
147 volatile uint32_t qh_h_next;
148 volatile uint32_t qh_e_next;
150 * Extra information needed:
152 struct uhci_qh *h_next;
153 struct uhci_qh *h_prev;
154 struct uhci_qh *obj_next;
155 struct uhci_td *e_next;
156 struct usb_page_cache *page_cache;
159 } __aligned(UHCI_QH_ALIGN);
161 typedef struct uhci_qh uhci_qh_t;
163 /* Maximum number of isochronous TD's and QH's interrupt */
164 #define UHCI_VFRAMELIST_COUNT 128
165 #define UHCI_IFRAMELIST_COUNT (2 * UHCI_VFRAMELIST_COUNT)
167 #if (((UHCI_VFRAMELIST_COUNT & (UHCI_VFRAMELIST_COUNT-1)) != 0) || \
168 (UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT))
169 #error "UHCI_VFRAMELIST_COUNT is not power of two"
170 #error "or UHCI_VFRAMELIST_COUNT > UHCI_FRAMELIST_COUNT"
173 #if (UHCI_VFRAMELIST_COUNT < USB_MAX_FS_ISOC_FRAMES_PER_XFER)
174 #error "maximum number of full-speed isochronous frames is higher than supported!"
177 struct uhci_config_desc {
178 struct usb_config_descriptor confd;
179 struct usb_interface_descriptor ifcd;
180 struct usb_endpoint_descriptor endpd;
183 union uhci_hub_desc {
184 struct usb_status stat;
185 struct usb_port_status ps;
189 struct uhci_hw_softc {
190 struct usb_page_cache pframes_pc;
191 struct usb_page_cache isoc_start_pc[UHCI_VFRAMELIST_COUNT];
192 struct usb_page_cache intr_start_pc[UHCI_IFRAMELIST_COUNT];
193 struct usb_page_cache ls_ctl_start_pc;
194 struct usb_page_cache fs_ctl_start_pc;
195 struct usb_page_cache bulk_start_pc;
196 struct usb_page_cache last_qh_pc;
197 struct usb_page_cache last_td_pc;
199 struct usb_page pframes_pg;
200 struct usb_page isoc_start_pg[UHCI_VFRAMELIST_COUNT];
201 struct usb_page intr_start_pg[UHCI_IFRAMELIST_COUNT];
202 struct usb_page ls_ctl_start_pg;
203 struct usb_page fs_ctl_start_pg;
204 struct usb_page bulk_start_pg;
205 struct usb_page last_qh_pg;
206 struct usb_page last_td_pg;
209 typedef struct uhci_softc {
210 struct uhci_hw_softc sc_hw;
211 struct usb_bus sc_bus; /* base device */
212 union uhci_hub_desc sc_hub_desc;
213 struct usb_callout sc_root_intr;
215 struct usb_device *sc_devices[UHCI_MAX_DEVICES];
216 /* pointer to last TD for isochronous */
217 struct uhci_td *sc_isoc_p_last[UHCI_VFRAMELIST_COUNT];
218 /* pointer to last QH for interrupt */
219 struct uhci_qh *sc_intr_p_last[UHCI_IFRAMELIST_COUNT];
220 /* pointer to last QH for low speed control */
221 struct uhci_qh *sc_ls_ctl_p_last;
222 /* pointer to last QH for full speed control */
223 struct uhci_qh *sc_fs_ctl_p_last;
224 /* pointer to last QH for bulk */
225 struct uhci_qh *sc_bulk_p_last;
226 struct uhci_qh *sc_reclaim_qh_p;
227 struct uhci_qh *sc_last_qh_p;
228 struct uhci_td *sc_last_td_p;
229 struct resource *sc_io_res;
230 struct resource *sc_irq_res;
233 bus_size_t sc_io_size;
234 bus_space_tag_t sc_io_tag;
235 bus_space_handle_t sc_io_hdl;
237 uint32_t sc_loops; /* number of QHs that wants looping */
239 uint16_t sc_intr_stat[UHCI_IFRAMELIST_COUNT];
240 uint16_t sc_saved_frnum;
242 uint8_t sc_addr; /* device address */
243 uint8_t sc_conf; /* device configuration */
244 uint8_t sc_isreset; /* bits set if a root hub is reset */
245 uint8_t sc_isresumed; /* bits set if a port was resumed */
246 uint8_t sc_saved_sof;
247 uint8_t sc_hub_idata[1];
249 char sc_vendor[16]; /* vendor string for root hub */
252 usb_bus_mem_cb_t uhci_iterate_hw_softc;
254 usb_error_t uhci_init(uhci_softc_t *sc);
255 void uhci_suspend(uhci_softc_t *sc);
256 void uhci_resume(uhci_softc_t *sc);
257 void uhci_reset(uhci_softc_t *sc);
258 void uhci_interrupt(uhci_softc_t *sc);
260 #endif /* _UHCI_H_ */