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1/*
2 * c67x00-hcd.c: Cypress C67X00 USB Host Controller Driver
3 *
4 * Copyright (C) 2006-2008 Barco N.V.
5 * Derived from the Cypress cy7c67200/300 ezusb linux driver and
6 * based on multiple host controller drivers inside the linux kernel.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
21 * MA 02110-1301 USA.
22 */
23
24#include <linux/device.h>
25#include <linux/platform_device.h>
26#include <linux/usb.h>
27
28#include "c67x00.h"
29#include "c67x00-hcd.h"
30
31/* --------------------------------------------------------------------------
32 * Root Hub Support
33 */
34
35static __u8 c67x00_hub_des[] = {
36 0x09, /* __u8 bLength; */
37 0x29, /* __u8 bDescriptorType; Hub-descriptor */
38 0x02, /* __u8 bNbrPorts; */
39 0x00, /* __u16 wHubCharacteristics; */
40 0x00, /* (per-port OC, no power switching) */
41 0x32, /* __u8 bPwrOn2pwrGood; 2ms */
42 0x00, /* __u8 bHubContrCurrent; 0 mA */
43 0x00, /* __u8 DeviceRemovable; ** 7 Ports max ** */
44 0xff, /* __u8 PortPwrCtrlMask; ** 7 ports max ** */
45};
46
47static void c67x00_hub_reset_host_port(struct c67x00_sie *sie, int port)
48{
49 struct c67x00_hcd *c67x00 = sie->private_data;
50 unsigned long flags;
51
52 c67x00_ll_husb_reset(sie, port);
53
54 spin_lock_irqsave(&c67x00->lock, flags);
55 c67x00_ll_husb_reset_port(sie, port);
56 spin_unlock_irqrestore(&c67x00->lock, flags);
57
58 c67x00_ll_set_husb_eot(sie->dev, DEFAULT_EOT);
59}
60
61static int c67x00_hub_status_data(struct usb_hcd *hcd, char *buf)
62{
63 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
64 struct c67x00_sie *sie = c67x00->sie;
65 u16 status;
66 int i;
67
68 *buf = 0;
69 status = c67x00_ll_usb_get_status(sie);
70 for (i = 0; i < C67X00_PORTS; i++)
71 if (status & PORT_CONNECT_CHANGE(i))
72 *buf |= (1 << i);
73
74 /* bit 0 denotes hub change, b1..n port change */
75 *buf <<= 1;
76
77 return !!*buf;
78}
79
80static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
81 u16 wIndex, char *buf, u16 wLength)
82{
83 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
84 struct c67x00_sie *sie = c67x00->sie;
85 u16 status, usb_status;
86 int len = 0;
87 unsigned int port = wIndex-1;
88 u16 wPortChange, wPortStatus;
89
90 switch (typeReq) {
91
92 case GetHubStatus:
93 *(__le32 *) buf = cpu_to_le32(0);
94 len = 4; /* hub power */
95 break;
96
97 case GetPortStatus:
98 if (wIndex > C67X00_PORTS)
99 return -EPIPE;
100
101 status = c67x00_ll_usb_get_status(sie);
102 usb_status = c67x00_ll_get_usb_ctl(sie);
103
104 wPortChange = 0;
105 if (status & PORT_CONNECT_CHANGE(port))
106 wPortChange |= USB_PORT_STAT_C_CONNECTION;
107
108 wPortStatus = USB_PORT_STAT_POWER;
109 if (!(status & PORT_SE0_STATUS(port)))
110 wPortStatus |= USB_PORT_STAT_CONNECTION;
111 if (usb_status & LOW_SPEED_PORT(port)) {
112 wPortStatus |= USB_PORT_STAT_LOW_SPEED;
113 c67x00->low_speed_ports |= (1 << port);
114 } else
115 c67x00->low_speed_ports &= ~(1 << port);
116
117 if (usb_status & SOF_EOP_EN(port))
118 wPortStatus |= USB_PORT_STAT_ENABLE;
119
120 *(__le16 *) buf = cpu_to_le16(wPortStatus);
121 *(__le16 *) (buf + 2) = cpu_to_le16(wPortChange);
122 len = 4;
123 break;
124
125 case SetHubFeature: /* We don't implement these */
126 case ClearHubFeature:
127 switch (wValue) {
128 case C_HUB_OVER_CURRENT:
129 case C_HUB_LOCAL_POWER:
130 len = 0;
131 break;
132
133 default:
134 return -EPIPE;
135 }
136 break;
137
138 case SetPortFeature:
139 if (wIndex > C67X00_PORTS)
140 return -EPIPE;
141
142 switch (wValue) {
143 case USB_PORT_FEAT_SUSPEND:
144 dev_dbg(c67x00_hcd_dev(c67x00),
145 "SetPortFeature %d (SUSPEND)\n", port);
146 len = 0;
147 break;
148
149 case USB_PORT_FEAT_RESET:
150 c67x00_hub_reset_host_port(sie, port);
151 len = 0;
152 break;
153
154 case USB_PORT_FEAT_POWER:
155 /* Power always enabled */
156 len = 0;
157 break;
158
159 default:
160 dev_dbg(c67x00_hcd_dev(c67x00),
161 "%s: SetPortFeature %d (0x%04x) Error!\n",
162 __func__, port, wValue);
163 return -EPIPE;
164 }
165 break;
166
167 case ClearPortFeature:
168 if (wIndex > C67X00_PORTS)
169 return -EPIPE;
170
171 switch (wValue) {
172 case USB_PORT_FEAT_ENABLE:
173 /* Reset the port so that the c67x00 also notices the
174 * disconnect */
175 c67x00_hub_reset_host_port(sie, port);
176 len = 0;
177 break;
178
179 case USB_PORT_FEAT_C_ENABLE:
180 dev_dbg(c67x00_hcd_dev(c67x00),
181 "ClearPortFeature (%d): C_ENABLE\n", port);
182 len = 0;
183 break;
184
185 case USB_PORT_FEAT_SUSPEND:
186 dev_dbg(c67x00_hcd_dev(c67x00),
187 "ClearPortFeature (%d): SUSPEND\n", port);
188 len = 0;
189 break;
190
191 case USB_PORT_FEAT_C_SUSPEND:
192 dev_dbg(c67x00_hcd_dev(c67x00),
193 "ClearPortFeature (%d): C_SUSPEND\n", port);
194 len = 0;
195 break;
196
197 case USB_PORT_FEAT_POWER:
198 dev_dbg(c67x00_hcd_dev(c67x00),
199 "ClearPortFeature (%d): POWER\n", port);
200 return -EPIPE;
201
202 case USB_PORT_FEAT_C_CONNECTION:
203 c67x00_ll_usb_clear_status(sie,
204 PORT_CONNECT_CHANGE(port));
205 len = 0;
206 break;
207
208 case USB_PORT_FEAT_C_OVER_CURRENT:
209 dev_dbg(c67x00_hcd_dev(c67x00),
210 "ClearPortFeature (%d): OVER_CURRENT\n", port);
211 len = 0;
212 break;
213
214 case USB_PORT_FEAT_C_RESET:
215 dev_dbg(c67x00_hcd_dev(c67x00),
216 "ClearPortFeature (%d): C_RESET\n", port);
217 len = 0;
218 break;
219
220 default:
221 dev_dbg(c67x00_hcd_dev(c67x00),
222 "%s: ClearPortFeature %d (0x%04x) Error!\n",
223 __func__, port, wValue);
224 return -EPIPE;
225 }
226 break;
227
228 case GetHubDescriptor:
229 len = min_t(unsigned int, sizeof(c67x00_hub_des), wLength);
230 memcpy(buf, c67x00_hub_des, len);
231 break;
232
233 default:
234 dev_dbg(c67x00_hcd_dev(c67x00), "%s: unknown\n", __func__);
235 return -EPIPE;
236 }
237
238 return 0;
239}
240
241/* ---------------------------------------------------------------------
242 * Main part of host controller driver
243 */
244
245/**
246 * c67x00_hcd_irq
247 *
248 * This function is called from the interrupt handler in c67x00-drv.c
249 */
250static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
251{
252 struct c67x00_hcd *c67x00 = sie->private_data;
253 struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
254
255 /* Handle sie message flags */
256 if (msg) {
257 if (msg & HUSB_TDListDone)
258 c67x00_sched_kick(c67x00);
259 else
260 dev_warn(c67x00_hcd_dev(c67x00),
261 "Unknown SIE msg flag(s): 0x%04x\n", msg);
262 }
263
264 if (unlikely(hcd->state == HC_STATE_HALT))
265 return;
266
267 if (!HCD_HW_ACCESSIBLE(hcd))
268 return;
269
270 /* Handle Start of frame events */
271 if (int_status & SOFEOP_FLG(sie->sie_num)) {
272 c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
273 c67x00_sched_kick(c67x00);
274 set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
275 }
276}
277
278/**
279 * c67x00_hcd_start: Host controller start hook
280 */
281static int c67x00_hcd_start(struct usb_hcd *hcd)
282{
283 hcd->uses_new_polling = 1;
284 hcd->state = HC_STATE_RUNNING;
285 set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
286
287 return 0;
288}
289
290/**
291 * c67x00_hcd_stop: Host controller stop hook
292 */
293static void c67x00_hcd_stop(struct usb_hcd *hcd)
294{
295 /* Nothing to do */
296}
297
298static int c67x00_hcd_get_frame(struct usb_hcd *hcd)
299{
300 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
301 u16 temp_val;
302
303 dev_dbg(c67x00_hcd_dev(c67x00), "%s\n", __func__);
304 temp_val = c67x00_ll_husb_get_frame(c67x00->sie);
305 temp_val &= HOST_FRAME_MASK;
306 return temp_val ? (temp_val - 1) : HOST_FRAME_MASK;
307}
308
309static struct hc_driver c67x00_hc_driver = {
310 .description = "c67x00-hcd",
311 .product_desc = "Cypress C67X00 Host Controller",
312 .hcd_priv_size = sizeof(struct c67x00_hcd),
313 .flags = HCD_USB11 | HCD_MEMORY,
314
315 /*
316 * basic lifecycle operations
317 */
318 .start = c67x00_hcd_start,
319 .stop = c67x00_hcd_stop,
320
321 /*
322 * managing i/o requests and associated device resources
323 */
324 .urb_enqueue = c67x00_urb_enqueue,
325 .urb_dequeue = c67x00_urb_dequeue,
326 .endpoint_disable = c67x00_endpoint_disable,
327
328 /*
329 * scheduling support
330 */
331 .get_frame_number = c67x00_hcd_get_frame,
332
333 /*
334 * root hub support
335 */
336 .hub_status_data = c67x00_hub_status_data,
337 .hub_control = c67x00_hub_control,
338};
339
340/* ---------------------------------------------------------------------
341 * Setup/Teardown routines
342 */
343
344int c67x00_hcd_probe(struct c67x00_sie *sie)
345{
346 struct c67x00_hcd *c67x00;
347 struct usb_hcd *hcd;
348 unsigned long flags;
349 int retval;
350
351 if (usb_disabled())
352 return -ENODEV;
353
354 hcd = usb_create_hcd(&c67x00_hc_driver, sie_dev(sie), "c67x00_sie");
355 if (!hcd) {
356 retval = -ENOMEM;
357 goto err0;
358 }
359 c67x00 = hcd_to_c67x00_hcd(hcd);
360
361 spin_lock_init(&c67x00->lock);
362 c67x00->sie = sie;
363
364 INIT_LIST_HEAD(&c67x00->list[PIPE_ISOCHRONOUS]);
365 INIT_LIST_HEAD(&c67x00->list[PIPE_INTERRUPT]);
366 INIT_LIST_HEAD(&c67x00->list[PIPE_CONTROL]);
367 INIT_LIST_HEAD(&c67x00->list[PIPE_BULK]);
368 c67x00->urb_count = 0;
369 INIT_LIST_HEAD(&c67x00->td_list);
370 c67x00->td_base_addr = CY_HCD_BUF_ADDR + SIE_TD_OFFSET(sie->sie_num);
371 c67x00->buf_base_addr = CY_HCD_BUF_ADDR + SIE_BUF_OFFSET(sie->sie_num);
372 c67x00->max_frame_bw = MAX_FRAME_BW_STD;
373
374 c67x00_ll_husb_init_host_port(sie);
375
376 init_completion(&c67x00->endpoint_disable);
377 retval = c67x00_sched_start_scheduler(c67x00);
378 if (retval)
379 goto err1;
380
381 retval = usb_add_hcd(hcd, 0, 0);
382 if (retval) {
383 dev_dbg(sie_dev(sie), "%s: usb_add_hcd returned %d\n",
384 __func__, retval);
385 goto err2;
386 }
387
388 spin_lock_irqsave(&sie->lock, flags);
389 sie->private_data = c67x00;
390 sie->irq = c67x00_hcd_irq;
391 spin_unlock_irqrestore(&sie->lock, flags);
392
393 return retval;
394
395 err2:
396 c67x00_sched_stop_scheduler(c67x00);
397 err1:
398 usb_put_hcd(hcd);
399 err0:
400 return retval;
401}
402
403/* may be called with controller, bus, and devices active */
404void c67x00_hcd_remove(struct c67x00_sie *sie)
405{
406 struct c67x00_hcd *c67x00 = sie->private_data;
407 struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
408
409 c67x00_sched_stop_scheduler(c67x00);
410 usb_remove_hcd(hcd);
411 usb_put_hcd(hcd);
412}
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * c67x00-hcd.c: Cypress C67X00 USB Host Controller Driver
4 *
5 * Copyright (C) 2006-2008 Barco N.V.
6 * Derived from the Cypress cy7c67200/300 ezusb linux driver and
7 * based on multiple host controller drivers inside the linux kernel.
8 */
9
10#include <linux/device.h>
11#include <linux/platform_device.h>
12#include <linux/usb.h>
13
14#include "c67x00.h"
15#include "c67x00-hcd.h"
16
17/* --------------------------------------------------------------------------
18 * Root Hub Support
19 */
20
21static __u8 c67x00_hub_des[] = {
22 0x09, /* __u8 bLength; */
23 USB_DT_HUB, /* __u8 bDescriptorType; Hub-descriptor */
24 0x02, /* __u8 bNbrPorts; */
25 0x00, /* __u16 wHubCharacteristics; */
26 0x00, /* (per-port OC, no power switching) */
27 0x32, /* __u8 bPwrOn2pwrGood; 2ms */
28 0x00, /* __u8 bHubContrCurrent; 0 mA */
29 0x00, /* __u8 DeviceRemovable; ** 7 Ports max ** */
30 0xff, /* __u8 PortPwrCtrlMask; ** 7 ports max ** */
31};
32
33static void c67x00_hub_reset_host_port(struct c67x00_sie *sie, int port)
34{
35 struct c67x00_hcd *c67x00 = sie->private_data;
36 unsigned long flags;
37
38 c67x00_ll_husb_reset(sie, port);
39
40 spin_lock_irqsave(&c67x00->lock, flags);
41 c67x00_ll_husb_reset_port(sie, port);
42 spin_unlock_irqrestore(&c67x00->lock, flags);
43
44 c67x00_ll_set_husb_eot(sie->dev, DEFAULT_EOT);
45}
46
47static int c67x00_hub_status_data(struct usb_hcd *hcd, char *buf)
48{
49 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
50 struct c67x00_sie *sie = c67x00->sie;
51 u16 status;
52 int i;
53
54 *buf = 0;
55 status = c67x00_ll_usb_get_status(sie);
56 for (i = 0; i < C67X00_PORTS; i++)
57 if (status & PORT_CONNECT_CHANGE(i))
58 *buf |= (1 << i);
59
60 /* bit 0 denotes hub change, b1..n port change */
61 *buf <<= 1;
62
63 return !!*buf;
64}
65
66static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
67 u16 wIndex, char *buf, u16 wLength)
68{
69 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
70 struct c67x00_sie *sie = c67x00->sie;
71 u16 status, usb_status;
72 int len = 0;
73 unsigned int port = wIndex-1;
74 u16 wPortChange, wPortStatus;
75
76 switch (typeReq) {
77
78 case GetHubStatus:
79 *(__le32 *) buf = cpu_to_le32(0);
80 len = 4; /* hub power */
81 break;
82
83 case GetPortStatus:
84 if (wIndex > C67X00_PORTS)
85 return -EPIPE;
86
87 status = c67x00_ll_usb_get_status(sie);
88 usb_status = c67x00_ll_get_usb_ctl(sie);
89
90 wPortChange = 0;
91 if (status & PORT_CONNECT_CHANGE(port))
92 wPortChange |= USB_PORT_STAT_C_CONNECTION;
93
94 wPortStatus = USB_PORT_STAT_POWER;
95 if (!(status & PORT_SE0_STATUS(port)))
96 wPortStatus |= USB_PORT_STAT_CONNECTION;
97 if (usb_status & LOW_SPEED_PORT(port)) {
98 wPortStatus |= USB_PORT_STAT_LOW_SPEED;
99 c67x00->low_speed_ports |= (1 << port);
100 } else
101 c67x00->low_speed_ports &= ~(1 << port);
102
103 if (usb_status & SOF_EOP_EN(port))
104 wPortStatus |= USB_PORT_STAT_ENABLE;
105
106 *(__le16 *) buf = cpu_to_le16(wPortStatus);
107 *(__le16 *) (buf + 2) = cpu_to_le16(wPortChange);
108 len = 4;
109 break;
110
111 case SetHubFeature: /* We don't implement these */
112 case ClearHubFeature:
113 switch (wValue) {
114 case C_HUB_OVER_CURRENT:
115 case C_HUB_LOCAL_POWER:
116 len = 0;
117 break;
118
119 default:
120 return -EPIPE;
121 }
122 break;
123
124 case SetPortFeature:
125 if (wIndex > C67X00_PORTS)
126 return -EPIPE;
127
128 switch (wValue) {
129 case USB_PORT_FEAT_SUSPEND:
130 dev_dbg(c67x00_hcd_dev(c67x00),
131 "SetPortFeature %d (SUSPEND)\n", port);
132 len = 0;
133 break;
134
135 case USB_PORT_FEAT_RESET:
136 c67x00_hub_reset_host_port(sie, port);
137 len = 0;
138 break;
139
140 case USB_PORT_FEAT_POWER:
141 /* Power always enabled */
142 len = 0;
143 break;
144
145 default:
146 dev_dbg(c67x00_hcd_dev(c67x00),
147 "%s: SetPortFeature %d (0x%04x) Error!\n",
148 __func__, port, wValue);
149 return -EPIPE;
150 }
151 break;
152
153 case ClearPortFeature:
154 if (wIndex > C67X00_PORTS)
155 return -EPIPE;
156
157 switch (wValue) {
158 case USB_PORT_FEAT_ENABLE:
159 /* Reset the port so that the c67x00 also notices the
160 * disconnect */
161 c67x00_hub_reset_host_port(sie, port);
162 len = 0;
163 break;
164
165 case USB_PORT_FEAT_C_ENABLE:
166 dev_dbg(c67x00_hcd_dev(c67x00),
167 "ClearPortFeature (%d): C_ENABLE\n", port);
168 len = 0;
169 break;
170
171 case USB_PORT_FEAT_SUSPEND:
172 dev_dbg(c67x00_hcd_dev(c67x00),
173 "ClearPortFeature (%d): SUSPEND\n", port);
174 len = 0;
175 break;
176
177 case USB_PORT_FEAT_C_SUSPEND:
178 dev_dbg(c67x00_hcd_dev(c67x00),
179 "ClearPortFeature (%d): C_SUSPEND\n", port);
180 len = 0;
181 break;
182
183 case USB_PORT_FEAT_POWER:
184 dev_dbg(c67x00_hcd_dev(c67x00),
185 "ClearPortFeature (%d): POWER\n", port);
186 return -EPIPE;
187
188 case USB_PORT_FEAT_C_CONNECTION:
189 c67x00_ll_usb_clear_status(sie,
190 PORT_CONNECT_CHANGE(port));
191 len = 0;
192 break;
193
194 case USB_PORT_FEAT_C_OVER_CURRENT:
195 dev_dbg(c67x00_hcd_dev(c67x00),
196 "ClearPortFeature (%d): OVER_CURRENT\n", port);
197 len = 0;
198 break;
199
200 case USB_PORT_FEAT_C_RESET:
201 dev_dbg(c67x00_hcd_dev(c67x00),
202 "ClearPortFeature (%d): C_RESET\n", port);
203 len = 0;
204 break;
205
206 default:
207 dev_dbg(c67x00_hcd_dev(c67x00),
208 "%s: ClearPortFeature %d (0x%04x) Error!\n",
209 __func__, port, wValue);
210 return -EPIPE;
211 }
212 break;
213
214 case GetHubDescriptor:
215 len = min_t(unsigned int, sizeof(c67x00_hub_des), wLength);
216 memcpy(buf, c67x00_hub_des, len);
217 break;
218
219 default:
220 dev_dbg(c67x00_hcd_dev(c67x00), "%s: unknown\n", __func__);
221 return -EPIPE;
222 }
223
224 return 0;
225}
226
227/* ---------------------------------------------------------------------
228 * Main part of host controller driver
229 */
230
231/*
232 * c67x00_hcd_irq
233 *
234 * This function is called from the interrupt handler in c67x00-drv.c
235 */
236static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
237{
238 struct c67x00_hcd *c67x00 = sie->private_data;
239 struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
240
241 /* Handle sie message flags */
242 if (msg) {
243 if (msg & HUSB_TDListDone)
244 c67x00_sched_kick(c67x00);
245 else
246 dev_warn(c67x00_hcd_dev(c67x00),
247 "Unknown SIE msg flag(s): 0x%04x\n", msg);
248 }
249
250 if (unlikely(hcd->state == HC_STATE_HALT))
251 return;
252
253 if (!HCD_HW_ACCESSIBLE(hcd))
254 return;
255
256 /* Handle Start of frame events */
257 if (int_status & SOFEOP_FLG(sie->sie_num)) {
258 c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
259 c67x00_sched_kick(c67x00);
260 }
261}
262
263/*
264 * c67x00_hcd_start: Host controller start hook
265 */
266static int c67x00_hcd_start(struct usb_hcd *hcd)
267{
268 hcd->uses_new_polling = 1;
269 hcd->state = HC_STATE_RUNNING;
270 set_bit(HCD_FLAG_POLL_RH, &hcd->flags);
271
272 return 0;
273}
274
275/*
276 * c67x00_hcd_stop: Host controller stop hook
277 */
278static void c67x00_hcd_stop(struct usb_hcd *hcd)
279{
280 /* Nothing to do */
281}
282
283static int c67x00_hcd_get_frame(struct usb_hcd *hcd)
284{
285 struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
286 u16 temp_val;
287
288 dev_dbg(c67x00_hcd_dev(c67x00), "%s\n", __func__);
289 temp_val = c67x00_ll_husb_get_frame(c67x00->sie);
290 temp_val &= HOST_FRAME_MASK;
291 return temp_val ? (temp_val - 1) : HOST_FRAME_MASK;
292}
293
294static const struct hc_driver c67x00_hc_driver = {
295 .description = "c67x00-hcd",
296 .product_desc = "Cypress C67X00 Host Controller",
297 .hcd_priv_size = sizeof(struct c67x00_hcd),
298 .flags = HCD_USB11 | HCD_MEMORY,
299
300 /*
301 * basic lifecycle operations
302 */
303 .start = c67x00_hcd_start,
304 .stop = c67x00_hcd_stop,
305
306 /*
307 * managing i/o requests and associated device resources
308 */
309 .urb_enqueue = c67x00_urb_enqueue,
310 .urb_dequeue = c67x00_urb_dequeue,
311 .endpoint_disable = c67x00_endpoint_disable,
312
313 /*
314 * scheduling support
315 */
316 .get_frame_number = c67x00_hcd_get_frame,
317
318 /*
319 * root hub support
320 */
321 .hub_status_data = c67x00_hub_status_data,
322 .hub_control = c67x00_hub_control,
323};
324
325/* ---------------------------------------------------------------------
326 * Setup/Teardown routines
327 */
328
329int c67x00_hcd_probe(struct c67x00_sie *sie)
330{
331 struct c67x00_hcd *c67x00;
332 struct usb_hcd *hcd;
333 unsigned long flags;
334 int retval;
335
336 if (usb_disabled())
337 return -ENODEV;
338
339 hcd = usb_create_hcd(&c67x00_hc_driver, sie_dev(sie), "c67x00_sie");
340 if (!hcd) {
341 retval = -ENOMEM;
342 goto err0;
343 }
344 c67x00 = hcd_to_c67x00_hcd(hcd);
345
346 spin_lock_init(&c67x00->lock);
347 c67x00->sie = sie;
348
349 INIT_LIST_HEAD(&c67x00->list[PIPE_ISOCHRONOUS]);
350 INIT_LIST_HEAD(&c67x00->list[PIPE_INTERRUPT]);
351 INIT_LIST_HEAD(&c67x00->list[PIPE_CONTROL]);
352 INIT_LIST_HEAD(&c67x00->list[PIPE_BULK]);
353 c67x00->urb_count = 0;
354 INIT_LIST_HEAD(&c67x00->td_list);
355 c67x00->td_base_addr = CY_HCD_BUF_ADDR + SIE_TD_OFFSET(sie->sie_num);
356 c67x00->buf_base_addr = CY_HCD_BUF_ADDR + SIE_BUF_OFFSET(sie->sie_num);
357 c67x00->max_frame_bw = MAX_FRAME_BW_STD;
358
359 c67x00_ll_husb_init_host_port(sie);
360
361 init_completion(&c67x00->endpoint_disable);
362 retval = c67x00_sched_start_scheduler(c67x00);
363 if (retval)
364 goto err1;
365
366 retval = usb_add_hcd(hcd, 0, 0);
367 if (retval) {
368 dev_dbg(sie_dev(sie), "%s: usb_add_hcd returned %d\n",
369 __func__, retval);
370 goto err2;
371 }
372
373 device_wakeup_enable(hcd->self.controller);
374
375 spin_lock_irqsave(&sie->lock, flags);
376 sie->private_data = c67x00;
377 sie->irq = c67x00_hcd_irq;
378 spin_unlock_irqrestore(&sie->lock, flags);
379
380 return retval;
381
382 err2:
383 c67x00_sched_stop_scheduler(c67x00);
384 err1:
385 usb_put_hcd(hcd);
386 err0:
387 return retval;
388}
389
390/* may be called with controller, bus, and devices active */
391void c67x00_hcd_remove(struct c67x00_sie *sie)
392{
393 struct c67x00_hcd *c67x00 = sie->private_data;
394 struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
395
396 c67x00_sched_stop_scheduler(c67x00);
397 usb_remove_hcd(hcd);
398 usb_put_hcd(hcd);
399}